identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03CA87AD1600FF99FF76F9063BCC9B95.text	03CA87AD1600FF99FF76F9063BCC9B95.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Hyalella minuana Talhaferro & Bueno & Pires & Stenert & Maltchik & Kotzian 2021	<div><p>Hyalella minuana Talhaferro &amp; Bueno, n. sp.</p><p>(Figs 3–8)</p><p>Type locality: São José do Norte municipality, Rio Grande do Sul state, Brazil, sampling site P1 (31º 62’ 68.96” S, 51º 42’ 59.12” W) .</p><p>Type specimens. Holotype: male, body length = 7.0 mm; head length = 1.0 mm (MZUSP 41786), São José do Norte municipality (31º 62’ 68.96” S, 51º 42’ 59.12” W), September 2015, Pires, M. M. &amp; cols . Allotype: female, body length = 5.2 mm, head length = 0.6 mm (MZUSP 41787), same locality as holotype .</p><p>Paratypes: MZUSP 41788, 10 whole specimens (5 males and 5 females); CCUFLA 440, 10 whole specimens (5 males and 5 females), 3 males and 1 female on slides; CRU0012, 249 whole specimens (31 males, 110 females and 108 juveniles), and 2 males on slides (same collection data of the holotype);</p><p>Additional specimens. CRU0013, 27 whole individuals (1 male, 9 females and 17 juveniles) and 5 males on slides, São José do Norte municipality, Rio Grande do Sul state, Brazil, sampling site P2 (31º 51’ 10.17” S, 51º 26’ 73.47” W), September 2015, Pires, M. M. &amp; cols .</p><p>Diagnosis. Body surface smooth. Eyes ovoid and pigmented. Antenna 1 shorter than antenna 2. Maxilla 1 with palp uniarticulate, not reaching half of the distance between the base of palp and base of the setae of the outer plate. Inner plate of maxilla 2 with two papposerrate setae. Propodus of gnathopod 1 hammer-shaped, longer than wide with nine serrate setae on inner margin. Peduncle of uropod 1 slightly longer than the ramus with seven cuspidate setae on margin, presence of curved seta (male) on inner ramus, followed by three cuspidate setae with decreasing size lined up a row. Peduncle of the uropod 2 slightly longer than the ramus, outer ramus with five cuspidate setae and inner ramus with six cuspidate setae, in both ramus there are is two robust cuspidate setae on apex (one long and one smaller). Peduncle of the uropod 3 and ramus with similar size, peduncle with three cuspidate setae and ramus with six simple setae and one robust cuspidate seta. Sternal gills on pereonites 2 to 7.</p><p>Description of male. Mean body length: 7.78 ± 0.37 mm (n=5), mean head length = 0.96 ± 0.04 mm (n=5). Body surface smooth. Eyes ovoid and pigmented. Epimeral plate not acuminated (Fig. 3A).</p><p>Antenna 1 (Fig. 3B): 3.4 mm; peduncle with three articles; first article longer than wide and longer than the third, first article with cuspidate setae on the distal margin; second article with simple setae distributed along the margin; flagellum with 13 articles, all with a group of 2-5 simple setae apically. Aesthetascs observed only in articles 2 and 11.</p><p>Antenna 2 (Fig. 3C): 5.0 mm, surpassing half of the body length; peduncle longer than head length; flagellum consisting of 15 articles of similar size, with a group of 2-5 simple setae apically.</p><p>Basic amphipodan mandible type (in sensu of Watling 1993) with palp absent. Right mandible (Fig 3D) incisor process with five teeth and two pappose setae with a group of setules. Left mandible (Fig. 3E) incisor process and lacinia mobilis with five teeth; three pappose setae under the lacinia mobilis. In both mandibles, the molar process is cylindrical, large and triturative, with a group of setules on superior margin and presence of long pappose setae on inner margin.</p><p>Upper lip (Fig. 3F) with rounded borders and the presence of simple setae and setules, ventral margin with many setules.</p><p>Lower lip (Fig. 3G) bilobed, with distal margins ovoid, presence of simple setae and setules on inner and distal margins, outer margin smooth.</p><p>Maxilla 1 (Fig. 3H) palp short and unarticulated, thin apically with one simple seta and setules in the borders, length not reaching half of the distance between the base of the palp and base of the setae on outer plate; inner plate slender, almost reaching the half the length of the outer plate with two apex papposerrate setae, inner and outer margin covered by setules; outer plate with nine serrate setae distributed apically.</p><p>Maxilla 2 (Fig. 3I) inner and outer plate similar in length and wide; inner plate with simple and serrate setae on apex, inner margin with two papposerrate setae (inner seta short and slender, outer seta long and robust); outer plate with long simple and serrate setae on the apex.</p><p>Maxilliped (Fig. 3J) plates with apex rounded; inner plate with three cuspidate setae in cone-shaped apical and small pappose setae; inner margin with seven pappose setae, outer margin smooth; outer plate slightly longer than inner plate, with inner margin and apex covered by long simple setae and outer margin smooth; palp with four articles, article 1 with simple setae (1-4) on distal inner margin; article 2 longer and wider than article 3, with inner margin covered by long simple setae; distal inner margin of the article 3 covered by long simple setae, distal outer margin with a group of 4-6 serrate setae and simple setae; dactyl smooth, apex with one long and robust serrate setae and four simple setae subapical with half the length.</p><p>Gnathopod 1 (Figs 4A, B) subchelate; base long with one simple seta on posterior margin; ischium and merus with a group of simple setae on disto-posterior margin; carpus longer than wide and longer than propodus, posterior lobe is long and convex, forming a shell-shaped structure with a margin covered by serrate setae, inner surface with six simple setae, and disto-anterior margin with a cluster of 5-7 serrate setae; propodus longer than wide, width about 1/5 shorter than length, hammer-shaped, inner face with nine serrate setae arranged in two rows and few smaller simple setae, anterior margin with one simple seta, disto-anterior border covered by comb-scales and a cluster of simple setae, disto-posterior border covered by comb-scales and margin with two simple setae; outer face of propodus not observed; palm transverse and covered by simple and smaller cuspidate setae with accessory seta, with three long and slender simple setae, disto-posterior border of the palm with one cuspidate setae with accessory seta, palm length 1/2 shorter than posterior margin of propodus; dactyl claw-like and covered by comb-scales, length not exceeding the margin of the palm, with one small plumose setae in outer margin.</p><p>Gnathopod 2 (Figs 4C, D) subchelate; base long with five long simple setae on margin; ischium and merus with long simple setae on disto-posterior margin; carpus with distal margin slightly quadrate, posterior lobe of the carpus longer than wide, length between merus and propodus, with a row of serrate setae in the posterior margin; propodus ovate, length about of 1.6 times longer than wide, anterior margin smooth, length about 2.6 times of maximum length of posterior margin, with a cluster of simple setae on border, disto-posterior border with comb-scales and five smaller simple setae, with detail of apex dactyl, presenting two robust cuspidate setae with accessory setae; palm slightly longer than posterior margin of propodus, with inclination transverse and convex, covered by simple and cuspidate setae of medium size; dactyl claw-like and smooth, not exceeding the palm margin in length, with one small plumose setae in outer margin.</p><p>Pereopod 3 and 4 (Figs 5A, B): coxal plate of the pereopod 4 excavated posteriorly, in both pereopods the base is long with 3-6 setae on posterior margin; anterior margin of merus with two cuspidate setae, posterior margin of merus with 4-7 groups of cuspidate setae distributed on margin; posterior margin of carpus with five groups of cuspidate setae with accessory seta; posterior margin of propodus with seven groups of the cuspidate setae with accessory seta; dactyl with one small simple setae, the length of dactyl not reaching half of length of propodus.</p><p>Pereopod 5 to 7 (Figs 5C–E): pereopod 5 small than pereopod 6 and 7, coxal plates bilobed, in coxal plate of pereopod 7 the posterior lobe is 1/3 small of the anterior lobe; base is long, with the anterior lobe rounded and margin serrated with setules, posterior margin with 3-4 cuspidate setae with accessory seta; merus, carpus and propodus are similar in length, anterior margin of the merus with 2-4 cuspidate setae, posterior margin of the merus and carpus with three pairs of cuspidate setae with accessory seta; posterior margin of the propodus with four pair of cuspidate setae with accessory seta; dactyl not reaching half of length of propodus.</p><p>Pleopods (Fig. 6A) similar, peduncle long and smooth; ramus longer than peduncle, with plumose setae densely distributed for the length of the ramus.</p><p>Uropod 1 (Fig. 6B) peduncle longer than wide, slightly longer than the ramus, with seven cuspidate setae with accessory seta on superior margin; ramus similar in length and wide, outer ramus with five cuspidate setae with accessory setae distributed along the superior margin of the ramus, apex with two cuspidate setae; inner ramus with four cuspidate setae with accessory setae on the outer side of the ramus, inner side with curved seta reaching the apex of the ramus, followed by three smaller setae arranged in a row, apex with two cuspidate setae.</p><p>Uropod 2 (Fig. 6C) peduncle slightly longer than the ramus, with four cuspidate setae with accessory seta; ramus similar in length and wide, outer ramus with five cuspidate setae with accessory seta; inner ramus with six cuspidate setae with accessory seta; in both, the apex has two cuspidate setae.</p><p>Uropod 3 (Fig. 6D) shorter than the peduncle of uropod 1; peduncle longer than wide, similar to the length of the ramus with up to three basal small simple setae, apex with four cuspidate setae with accessory seta and one simple setae; ramus slender with six simple setae apically and one cuspidate seta small and robust.</p><p>Telson (Fig. 6E) longer than wide; apex with rounded borders with two cuspidate setae with accessory seta and three simple setae.</p><p>Coxal gills sac-like present on pereonites 2 to 6.</p><p>Sternal gills tubular present on pereonites 2 to 7.</p><p>Description of female. CCUFLA 440, body length: 8.3 mm; head length 1.0 mm. Antenna 1 (Fig. 7A): 3.1 mm; peduncle formed by three articles; first article longer than wide and larger than the others article; flagellum composed of 10 articles, with groups of simple setae. Antenna 2 (Fig. 7B): 4.2 mm; reaching half the length of the body; peduncle formed by three articles, greater than the length of the head; flagellum with 13 articles, with groups of simple setae.</p><p>Gnathopod 1 (Fig. 7C, D) subchelate; long base, with one simple seta at the posterior margin, disto-posterior margin with seven long and slender simple setae; ischium with comb-scales on the posterior margin and seven simple long and slender setae on the distal margin; merus with the disto-posterior margin ovoid, with comb-scales and eight long and slender simple setae; carpus longer than wider, posterior margin convex, forming a shell-like structure, covered by serrate setae arranged in a row on the margin, inner surface of the carpus with seven long and slender simple setae, anterior margin smooth, distal margin with serrate setae; propodus longer than wide and widened distally; length about 1.4 times of maximum width, hammer-shaped, anterior margin with three simple setae, disto-anterior and disto-posterior margin covered by comb-scales, disto-anterior margin with a cluster of simple setae, disto-posterior margin with five small simple setae, inner surface with nine serrate setae arranged in two rows; outer face of propodus not observed; straight palm, length about 1/2 smaller than length of posterior margin of propodus, covered by smaller cuspidate setae with accessory seta and simple setae of the medium-sized, and two simple setae long and slender, disto-posterior margin of the palm with one robust cuspidate seta with accessory seta; dactyl claw-like, not exceeding the length of the palm, covered by comb-scales with a small plumose seta on the posterior margin.</p><p>Gnathopod 2 (Fig. 7E, F) subchelate; long base with three setae on the margin, disto-posterior margin with seven long simple setae; ischium with comb-scales on the posterior and distal margins with eight simple long and slender setae; merus with comb-scales on the posterior margin, distal margin ovoid with a group of long simple setae distributed; carpus longer than wide, posterior margin convex, forming a shell-like structure, with serrate setae arranged in a row on the distal margin, inner surface with four long simple setae, anterior margin with a simple seta, disto-anterior margin with nine long simple setae; propodus rectangular, longer than wide, with length about 1.8 times than of maximum width,, anterior margin with long simple setae, disto-anterior and disto-posterior margin covered by comb-scales, disto-anterior margin with a group of long simple setae, posterior margin with four small simple setae, inner surface with four serrate setae; palm straight and length about 1/2 smaller than length of posterior margin of propodus, with small cuspidate and simple setae, three long and the others of medium-size, disto-posterior margin with one robust cuspidate seta with accessory seta; dactyl claw-like, not exceeding the length of the palm, covered by comb-scales and with small plumose seta on the posterior margin. Presence of foliaceous oostegites on pereonite, with curl-tipped setae on the margin.</p><p>Intraspecific variation. The number of setae in the inner ramus of uropod 2 varied in some males, where it presented five cuspidate setae with accessory seta instead of six (Fig. 8A). There was also variation in the format and number of setae in the telson, where a quadrangular shape of the telson was observed, with the presence of 5-6 cuspidate setae with accessory seta, without the presence of simple setae (Fig. 8B).</p><p>Measurements: For males, the mean body length was of 5.64 ± 1.4 mm, while the mean head length was of 0.7 ± 0.16 mm (n=52). The smallest male specimen had 3.1 mm of body length, and 0.5 mm of head length, while the largest male reached 8.2 mm of body length, with head length reaching 1.0 mm. For females, the mean body length was of 5.4 ± 1.5 mm, and the mean head length was of 0.68 ± 0.18 mm (n=130). The body size of the smallest female reached 2.4 mm and the head length, 0.4 mm, while the body size of the largest female measured 11.0 mm and its head length, 1.0 mm.</p><p>Etymology. The specific name is a homage to the first inhabitants of the municipality, the Minuanos Indians, who, together with the Carijó and Charrua Indians, previously inhabited the municipality of São José do Norte, the type of locality of species.</p><p>Habitat. Freshwater, epigean. Hyalella minuana n. sp. was found in intermittent ponds, one without and the other with physical connection with other water bodies, with a size smaller than the one-hectare showing emergent and floating vegetation.</p><p>Distribution. Specimens of Hyalella minuana n. sp. were found in two wetlands along the Rio Grande Sul state coast, distant from each other ca of 21.6 km. Site P1 (Fig. 1) is a temporary pond with a total area of ca 1,908 m ², connected to another water body, depth of ~ 50 cm and tree vegetation. Site P2 (Fig. 1) is similar to Site 1, but is environmentally more heterogeneous, with water depth varying more than 20 cm, and without hydrologic connection with other water bodies, showing a total size-are of ca 4,801 m ². Both sites showed emergent and floating vegetation.</p><p>Taxonomic remarks. Hyalella minuana n. sp. shares some similarities with most species of the genus, mainly the presence of curved seta in the inner ramus of the uropod 1, characteristic of many species of the genus. Hyalella minuana n. sp. presents body surface smooth, differing from H. kaingang Araujo &amp; Cardoso, 2013, H. pleoacuta González, Bond-Buckup &amp; Araujo, 2006 and H. pseudoazteca González &amp; Watling, 2003 that present dorsal flanges in some segments. Hyalella palmeirensis Streck-Marx &amp; Castiglioni, 2020 resembles Hyalella minuana n. sp. due to the number of setae on the peduncle of uropod 3. However, while H. palmeirensis shows one pappose setae on the inner margin of the maxilla 2, Hyalella minuana n. sp. shows two pappose setae. Also, H. palmeirensis exhibits five serrate setae on the inner surface of the propodus of gnathopod 1, while Hyalella minuana n. sp. have nine serrate setae. Hyalella curvispina Shoemaker, 1942 also resembles Hyalella minuana n. sp. for presenting two pappose setae on the inner margin of the maxilla 2 and three cuspidate setae on the peduncle of uropod 3. However, both species show differences concerning the number of setae on the inner surface of gnathopod 1 and in size and type of the setae on telson. Hyalella curvispina has 5–7 setae on inner margin of gnathopod 1 and its telson is wider than long, with three simple setae. In turn, Hyalella minuana n. sp. present nine serrate setae on inner surface on gnathopod 1 and its telson is longer than wide, showing three cuspidate setae and simple setae. Hyalella castroi González, Bond-Buckup &amp; Araujo, 2006, H. bonariensis Bond-Buckup, Araujo &amp; Santos, 2008, H. georginae Streck &amp; Castiglioni, 2017, H. gauchensis Streck &amp; Castiglioni, 2017 and H. pampeana Cavalieri, 1968, differs from Hyalella minuana n. sp. in the number and disposition of the setae on uropods, form of telson, as well as in number and disposition of the setae on apex.</p><p>Two new species of Hyalella were recently described for the state of Santa Catarina, H. catarinensis Reis &amp; Bueno, 2020 and H. rioantensis Penoni &amp; Bueno, 2020 . Hyalella catarinensis differs from Hyalella minuana n. sp. in the number of setae on the inner surface of gnathopod 1 ( H. catarinensis has four pappose setae; Hyalella minuana n. sp. shows nine serrate setae). In addition, H. catarinensis shows five cuspidate setae on the peduncle of uropod 1, while Hyalella minuana n. sp. shows seven cuspidate setae. In the peduncle of uropod 2, H. catarinensis has three cuspidate setae, while Hyalella minuana n. sp. has four cuspidate setae. In turn, H. rioantensis differs from Hyalella minuana n. sp. for not having papposerrate setae on the inner plate of the maxilla 2, and by the absence of serrate setae on the inner surface of the gnathopod 1.</p><p>In addition, H. minuana n. sp., H. catarinensis and H. rioantensis present the propodus ovate; the maxilliped presents comb-scales only in H. rioantensis, being absent in H. minuana n. sp. and H. catarinensis, while H. minuana n. sp. present serrate setae on the maxilliped, and H. catarinensis and H. rioantensis present pappose setae; in the three species the coxal plate is excavated posteriorly, being slightly longer than wide in H. minuana n. sp., longer than wide in H. catarinensis, and deeper than wide in H. rioantensis .</p></div>	https://treatment.plazi.org/id/03CA87AD1600FF99FF76F9063BCC9B95	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Talhaferro, Jordan Tuparai;Bueno, Alessandra Angélica De Pádua;Pires, Mateus Marques;Stenert, Cristina;Maltchik, Leonardo;Kotzian, Carla Bender	Talhaferro, Jordan Tuparai, Bueno, Alessandra Angélica De Pádua, Pires, Mateus Marques, Stenert, Cristina, Maltchik, Leonardo, Kotzian, Carla Bender (2021): Three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from the Southern Brazilian Coastal Plain. Zootaxa 4970 (2): 257-292, DOI: 10.11646/zootaxa.4970.2.2
03CA87AD160FFF83FF76FF2B3CC99A50.text	03CA87AD160FFF83FF76FF2B3CC99A50.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Hyalella lagoana Talhaferro & Bueno & Pires & Stenert & Maltchik & Kotzian 2021	<div><p>Hyalella lagoana Talhaferro &amp; Bueno, n. sp.</p><p>(Figs 9–14)</p><p>Type locality. <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-50.676834&amp;materialsCitation.latitude=-30.045776" title="Search Plazi for locations around (long -50.676834/lat -30.045776)">Osório</a> municipality, Rio Grande do Sul state, Brazil, sampling site P3 (30º 02’ 44.8” S, 50º 40’ 36.6” W) .</p><p>Type specimens. Holotype: male, body length = 7.0 mm; head length = 0.8 mm (MZUSP 41789), Osório municipality (30º 02’ 44.8” S, 50º 40’ 36.06” W), October 2015, Pires, M. M. &amp; cols . Allotype: female, body length = 0.7 mm, head length = 5.4 mm (MZUSP 41790), same locality as holotype .</p><p>Paratypes: MZUSP 41791, 10 whole specimens (5 males and 5 females); CCUFLA 441, 10 whole specimens (5 males and 5 females), 3 males and 1 female on slides; CRU0014, 145 whole specimens (24 males, 72 females and 49 juveniles) and 2 males on slides (same collection data of the holotype) .</p><p>Additional specimens. CRU0015, 4 whole specimens (2 female and 2 juvenile) and 4 males on slides, Garopaba municipality, Santa Catarina state, Brazil, sampling site P8 (28º 03’ 96.12” S, 48º 61’ 31.21” W), October 2015, Pires, M. M. &amp; cols .</p><p>Diagnosis. Body surface smooth. Eyes ovoid, large and pigmented. Antenna 1 approximately 1/4 smaller than antenna 2. Palp of the maxilla 1 uniarticulate and oval with apex covered by setules. Plates of maxilla 2 similar in length and width, inner plate with two papposerrate setae in the inner margin. Propodus of gnathopod 1 hammershaped, longer than wide, with four serrate setae on the inner surface. Peduncle of the uropod 1 with seven cuspidate setae on the margin, inner side of the inner ramus with four cuspidate setae, with curved setae reaching the apex of the ramus (male). Uropod 2 longer than the peduncle of uropod 1, peduncle with five cuspidate setae, inner ramus with seven cuspidate setae and outer ramus with six cuspidate setae. Sternal gills on pereonites 2 to 7.</p><p>Description of male. Mean of body length: 6.74 ± 0.43 mm (n=5), mean of head length: 0.78 ± 0.07 mm (n=5). Body surface smooth. Eyes ovoid and pigmented. Epimeral plate not acuminated (Fig. 9A).</p><p>Antenna 1 (Fig. 9B): 3.0 mm; peduncle with three articles; first article longer than wide and with robust cuspidate setae on the distal margin; flagellum with 13 articles, each article presents a group of simple setae. Aesthetascs were not observed.</p><p>Antenna 2 (Fig. 9C): 4.0 mm; peduncle longer than head length; flagellum with 14-15 articles presenting groups of simple setae.</p><p>Basic amphipodan mandible type (in sensu of Watling 1993) with palp absent. Right mandible (Fig. 9D) incisor process with five teeth, and two pappose setae. Left mandible (Fig. 9E) incisor process with five teeth; lacinia mobilis with four teeth; three pappose setae and setules below the lacinia. In both mandibles, the molar process is cylindrical, large, and triturative, with single long pappose seta on the inner margin, superior margin of the molar process with setules.</p><p>Upper lip (Fig. 9F) showing outer borders ovoid, with simple setae on the borders, covered by several setules.</p><p>Lower lip (Fig. 9G) bilobed, with simple setae and several setules on the inner and ventral margins, outer margins smooth.</p><p>Maxilla 1 (Fig. 9H) palp uniarticulate, margins covered by setules, apex ovoid with a single apical seta, length not reaching half the distance between the palp base and the base of the setae on the apex of the outer plate; outer plate with nine serrate setae at the apex; inner plate slender, reaching half the length of the outer plate, margins covered by setules, and apex with two papposerrate setae of equal size.</p><p>Maxilla 2 (Fig. 9I) plates similar in length and width; inner plate longer than wide, apex covered with serrate setae and few simple setae, inner margin with two papposerrate setae, inner seta short and slender, outer seta long and robust; outer plate longer than wide, apex covered by long serrate setae and a few smaller simple setae.</p><p>Maxilliped (Fig. 9J) inner plate 1/3 smaller than the outer plate, inner margin with six pappose setae, apex rounded with three cuspidate setae in cone-shaped, and smaller pappose setae, outer margin smooth; outer plate reaching half the length of the article 2, inner margin covered by simple setae, outer margin smooth; palp with four articles, articles 1 and 2 with several simple setae on inner margin; inner margin of the article 3 covered by long and slender simple setae, outer distal margin with a group of simple and serrate setae; article 2 and 3 with many setules; dactyl longer than wide, with sub-apical simple setae and apex with a single long serrate setae.</p><p>Gnathopod 1 (Figs 10A, B) subchelate; long base, with one simple seta on the posterior margin, distal margin with a group of simple setae; ischium with comb-scales and simple setae on the posterior margin; merus similar in length to the ischium, longer than wide, distal margin ovoid with six simple setae; carpus longer than wide, distoanterior margin with a group of serrate setae, inner surface with six simple setae, posterior lobe elongated, forming a shell-shaped structure with a margin covered by serrate setae; propodus longer than wide, length about 1.6 times of maximum width, hammer-shaped, inner face with four serrate setae and a few smaller simple setae, disto-anterior margin with comb-scales and one simple seta, disto-posterior margin with comb-scales and cup for dactyl; outer face of propodus not observed; palm transverse and slightly convex, length about 1/3 smaller than posterior margin length of propodus, covered by simple and cuspidate setae with accessory seta and two long and slender simple setae, distal margin of the palm with two robust cuspidate setae with accessory seta; dactyl claw-like, covered by comb-scales and congruent of the palm length, outer margin with comb-scales and one small plumose seta.</p><p>Gnathopod 2 (Figs 10C, D) subchelate; showing a long base, with two simple setae on the posterior margin; disto-posterior margin with groups of long and slender simple setae; ischium as long than wide, with group of simple setae on the disto-posterior margin; merus slightly longer than wide, posterior margin ovoid with long and slender simple setae; carpus as long than wide, disto-anterior margin with serrate setae, posterior lobe convex, shell-like shape, covered with serrate setae; propodus ovate, long than wide, length about 1.2 times of maximum width, distoanterior margin with a group of long simple seta, disto-posterior margin covered by comb-scales, posterior margin with one simple seta of intermediate size, inner face with a few simple and smaller setae; palm slightly convex, longer than posterior margin of the propodus (1.2 times), covered by simple and cuspidate setae with accessory seta; disto-posterior margin with two robust cuspidate setae with accessory seta; dactyl claw-like, smooth and congruent of the palm length, with small plumose setae on the outer margin.</p><p>Pereopods 3 and 4 (Figs 11A, B) similar in size; the coxal plate of the pereopod 4 excavated posteriorly; the base with 4-5 simple setae on the posterior margin in the pereopod 3; in both pereopods, merus longer than carpus with 4-6 groups of simple setae on the posterior margin; carpus with five cuspidate setae on the posterior margin with simple setae; propodus similar to the carpus in length, with seven cuspidate setae on the posterior margin with simple setae; dactyl not reaching half the length of the propodus, with simple seta subapical.</p><p>Pereopods 5 to 7 (Figs 11C–E): coxal plate bilobed; pereopod 7 with the posterior lobe 1/3 the size of the anterior lobe; pereopod 5 smaller than 6 and 7; pereopods 6 and 7 similar in size; base with anterior margin ovoid, posterior margin with cuspidate setae; merus with cuspidate setae on the anterior and posterior margins; carpus and propodus with pairs of cuspidate setae on the posterior margin; dactyl not reaching half the length of the propodus, with simple seta subapical.</p><p>Pleopods (Fig. 12A) similar, peduncle longer than wide, approximately 1/2 the length of the ramus; ramus with plumose setae distributed densely over the entire length.</p><p>Uropod 1 (Fig. 12B) peduncle larger than the ramus and longer than wide, with seven cuspidate setae with accessory setae; ramus similar in length and width; outer ramus with six cuspidate setae with accessory setae, apex with two cuspidate setae; inner ramus with four cuspidate setae with accessory setae on the outer side of the ramus, curved setae on the inner side of the ramus reaching the apex, followed by three cuspidate setae arranged in a row, with decreasing size, apex with two robust cuspidate setae.</p><p>Uropod 2 (Fig. 12C) larger than the peduncle of uropod 1; peduncle slightly smaller than the ramus, longer than wide, with five cuspidate setae with accessory seta; ramus similar in length and width; outer ramus with six cuspidate setae with accessory seta, apex with two cuspidate setae; inner ramus with seven cuspidate setae with accessory seta, apex with two robust cuspidate setae.</p><p>Uropod 3 (Fig. 12D) smaller than the peduncle of uropod 1; peduncle with five cuspidate setae with accessory seta and a simple seta; peduncle slightly longer than the ramus, with six long and slender simple setae and small robust cuspidate seta.</p><p>Telson (Fig. 12E) as longer than wide, apex rounded, with six cuspidate setae with accessory seta and two simple setae at the apex.</p><p>Coxal gills sac-like present on pereonites 2 to 6.</p><p>Sternal gills tubular present on pereonites 2 to 7.</p><p>Description of the female. CCUFLA 441, body length: 6.0 mm, head length 0.8 mm. Antenna 1 (Fig. 13A): 2.0 mm, smaller than antenna 2; peduncle formed by three articles; first article longer than wide with three long and robust simple setae on the margin, distal border with cuspidate seta; first at the second article wider than the third, and similar in length; third article smaller than the two others, in wide and length; flagellum with 9 articles, all with a group of simple setae. Antenna 2 (Fig. 13B): 2.7 mm; peduncle formed by three articles and longer than the length of the head; first article wider than the others, with half the length of the other two articles; second article wider than the third, with similar length; flagellum with 12 articles, all with a group of simple setae.</p><p>Gnathopod 1 (Figs 13C, D) subchelate; base with long and slender simple setae on the disto-posterior margin; ischium slightly longer than wide, with a group of long and slender simple setae on the disto-posterior margin; merus similar in length and width, disto-posterior margin rounded, with long simple setae; carpus longer than wide, posterior margin smooth, disto-anterior border with a group of long and slender simple setae, posterior margin convex, forming a shell-like structure and covered by serrate setae, inner margin with five simple setae arranged in a row; propodus longer than wide, length about 1.4 times of maximum width, hammer-shaped; anterior margin with two simple setae; disto-anterior and disto-posterior border covered by comb-scales, inner margin with six serrate setae arranged in one row; outer face of propodus not observed; palm slightly convex, length about 1/3 smaller than posterior margin length of propodus, covered by simple setae of intermediary-size and small cuspidate setae, the disto-posterior border with a one small and robust cuspidate seta with accessory seta; dactyl claw-like, not exceeding the length of the palm, covered by comb-scales and with four setules distributed along the inner margin, outer margin with a one simple seta.</p><p>Gnathopod 2 (Fig. 13E, F) subchelate; long base with a long central simple seta in the posterior margin and a group of simple setae on the disto-posterior margin; ischium slightly longer than wide with comb-scales and long simple setae on the disto-posterior margin; merus longer than wide, the disto-posterior margin rounded with combscales and a group of long simple setae; carpus longer than wide, less than 2 times the length of width, anterior margin smooth, the distal border with a group of simple setae, posterior margin convex, forming a shell-like structure covered by serrate setae, inner margin with two long simple setae; propodus rectangular shape, longer than wide, length about 1.8 times of maximum width, anterior margin with a simple seta and comb-scales, posterior margin with four simple setae and comb-scales from the central region to the distal border, inner surface with three serrate setae arranged in one row; palm slightly convex, length about 2.3 times smaller than maximum posterior margin length of propodus, covered by simple setae, the central region with two long and slender simple setae, the distoposterior border with two small and robust cuspidate setae with accessory seta; dactyl not exceeding the length of the palm, claw-like, covered by comb-scales and with four setules distributed along the inner margin, outer margin with a simple setae. Presence of foliaceous oostegites on pereonite, with curl-tipped setae on the margin.</p><p>Intraspecific variation. There was variation in some individuals in the number of bristles in the peduncle and branches of the uropod 3. The peduncle showed three instead of five cuspidate setae with accessory seta, the ramus showed the number of similar subapical setae, however, the number of distal setae differed in both rami, showing only two setae in both (Fig. 14A). The telson differed in some individuals that presented a different apex shape, with the rounder and less wide margins, in addition to having some tiny and robust cuspidate setae and the absence of simple setae (Fig 14B).</p><p>Measurements. For males, the mean body length was of 6.15 ± 0.9 mm, while the mean head length was of 0.71 ± 0.13 mm (n=43). The smallest male specimen had 3.1 mm of body length, and 0.5 mm of head length, while the largest male reached 90 mm of body length, with head length reaching 0.9 mm. For females, the mean body length was of 5.1 ± 1.0 mm, and the mean head length was of 0.63 ± 0.14 mm (n=85). The body size of the smallest female reached 3.1 mm and the head length, 0.4 mm, while the body size of the largest female measured 8.2 mm and its head length, 1.0 mm.</p><p>Etymology. The specific name, lagoana, refers to large numbers of ponds found in Osório municipality (23 ponds to all), also known as “Cidade das lagoas”, type locality of species.</p><p>Habitat. Freshwater, epigean. Hyalella lagoana n. sp. was found in intermittent ponds, the hydrological connection with other water bodies is present in a single pond, in both ponds, the size-area is smaller than the one-hectare, and feature emergent and floating vegetation.</p><p>Distribution. Hyalella lagoana n. sp. were registered in two sampling sites. Site P3 is an intermittent pond located in the Rio Grande do Sul (Fig. 1), showing a total size-area of 1,387 m ², depth uniform, and inferior to 50 cm. This site is isolated from other water bodies and shows no arboreous vegetation near their banks. Sampling site P8 is located in Santa Catarina (Fig. 1), shows a total area of ca. 3,500 m ², and is environmentally similar to site 3. However, its depth is not uniform along its area varying more than 20 cm, but not surpassing 50 cm. Its hydroperiod is permanent, and it is connected to other water bodies. Both, sites P3 and P8 contain emergent and floating vegetation in the margins.</p><p>Taxonomic remarks. Hyalella lagoana n. sp. shares important characteristics with other species, such as presence of curved seta on the inner ramus of uropod 1, that also occurs in H. georginae, H. gauchensis, H. montenegrinae Bond-Buckup &amp; Araujo, 1998, H. curvispina, H. castroi, H. kaingang, H. pleoacuta, H. carstica Bastos-Pereira &amp; Bueno, 2012, H. xakriaba Bueno &amp; Araujo, 2013, H. palmeirensis and H. bonariensis . However, Hyalella lagoana n. sp. differs from H. kaingang, H. pleoacuta and H. pseudoazteca, due to the absence of flanges in pereon and in pleonites. Hyalella lagoana n. sp. is similar to H. montenegrinae and H. pampeana due to the number of setae on the peduncle of uropod 3 and to the presence of two papposerrate setae in the inner margin of the inner plate of the maxilla 2. Hyalella lagoana n. sp. differs from H. montenegrinae and H. pampeana in characteristics related to the number of flagellum on the antennae 1 and 2, number of serrate on the inner surface of gnathopod 1 and in the form and number of setae on telson. Hyalella lagoana n. sp. also differs from H. georginae, H. gauchensis, H. curvispina, H. castroi, H. carstica, H. xakriaba, H. palmeirensis and H. bonariensis by the number of flagellum on the antennae 1 and 2, of serrate setae on the inner surface of the propodus of gnathopod 1, as well as by the number and disposition of setae on uropods, form of telson, and by the type and disposition of setae on the apex of the telson.</p><p>Hyalella lagoana n. sp. also shares similarities with two species recently described for the Santa Catarina state (Reis et al. 2020). However, it differs from H. catarinensis by the number of papposerrate setae on the inner plate of the maxilla 2 ( H. catarinensis with one papposerrate seta on inner plate), and by the form and number of setae cuspidate on the telson ( H. catarinensis with telson longer than wide, and with three cuspidate setae apical). Hyalella rioantensis differs from Hyalella lagoana n. sp. for presenting four cuspidate setae on the apex of telson, four to six cuspidate setae on the peduncle of uropod 1, and three or four cuspidate setae on the peduncle of uropod 2.</p><p>In addition, Hyalella lagoana n. sp. differs from Hyalella minuana n. sp. in number of the teeth on lacinia mobilis of the left mandible ( Hyalella lagoana n. sp. with four teeth, Hyalella minuana n. sp. with five teeth); the number of pappose setae on the inner plate of the maxilliped ( Hyalella lagoana n. sp. with six pappose setae; Hyalella minuana n. sp. with seven pappose setae); and the number of serrate setae on the inner surface of gnathopod 1 ( Hyalella lagoana n. sp. with four serrate setae; Hyalella minuana n. sp. with nine serrate setae).</p></div>	https://treatment.plazi.org/id/03CA87AD160FFF83FF76FF2B3CC99A50	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Talhaferro, Jordan Tuparai;Bueno, Alessandra Angélica De Pádua;Pires, Mateus Marques;Stenert, Cristina;Maltchik, Leonardo;Kotzian, Carla Bender	Talhaferro, Jordan Tuparai, Bueno, Alessandra Angélica De Pádua, Pires, Mateus Marques, Stenert, Cristina, Maltchik, Leonardo, Kotzian, Carla Bender (2021): Three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from the Southern Brazilian Coastal Plain. Zootaxa 4970 (2): 257-292, DOI: 10.11646/zootaxa.4970.2.2
03CA87AD1614FF8AFF76FDE6397E9BF9.text	03CA87AD1614FF8AFF76FDE6397E9BF9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Hyalella sambaqui Talhaferro & Bueno & Pires & Stenert & Maltchik & Kotzian 2021	<div><p>Hyalella sambaqui Talhaferro &amp; Bueno, n. sp.</p><p>(Figs 15–20)</p><p>Type locality. Passo de Torres municipality, Santa Catarina state, Brazil, sampling site P4 (29º 32’ 08” S, 49º 72’ 39” W) .</p><p>Type specimens. Holotype: male, body length = 8.1 mm, head length = 0.9 mm (MZUSP 41792), Passo de Torres municipality (29º 26’ 75.29” S, 49º 74’ 23.31” W), October 2015; Pires, M. M &amp; cols . Allotype: female, body length = 5.0 mm, head length = 0.6 mm (MZUSP 41793), same locality as holotype .</p><p>Paratypes: MZUSP 41794, 10 whole specimens (5 males and 5 females); CCUFLA 442, 10 whole specimens (5 male and 5 female) and 4 males and 1 female on slides; CRU0016, 514 whole specimens (131 males, 205 females and 178 juveniles) and 2 males on slides (same collection data of the holotype) .</p><p>Additional specimens. CRU0017, 34 whole specimens (6 males and 28 females), and 5 males on slides; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-49.715878&amp;materialsCitation.latitude=-29.217384" title="Search Plazi for locations around (long -49.715878/lat -29.217384)">Balneário da Gaivota</a> municipality, Santa Catarina state, Brazil, sampling site P5 (29º 13’ 02.58” S, 49º 62’ 02.09” W), October 2015; Pires, M. M &amp; cols. CRU0018, 429 whole specimens (64 males, 95 females and 270 juveniles), and 5 males on slides; Balneário Arroio do Silva municipality, Santa Catarina state, Brazil, sampling site P6 (28º 98’ 22.17” S, 49º 42’ 57.15” W), October 2015; Pires, M. M. &amp; cols. CRU0019, 7 whole specimens (6 females and 1 juvenile), and 1 male on slide; Jaguaruna municipality, Santa Catarina state, Brazil, sampling site P7 (28º 62’ 78.68” S, 48º 90’ 82.36” W), October 2015; Pires, M. M. &amp; cols .</p><p>Diagnosis. Body surface smooth. Eyes ovoid and pigmented. Antenna 1 shorter than antenna 2. Inner plate of maxilla 1 slender with 1/3 the width of the outer plate, with two unequal papposerrate apical setae. The inner plate of maxilla 2 with one long and one shorter papposerrate setae of inner margin. Propodus of gnathopod 1 hammershaped, inner face with six serrate setae. Uropod 1 with curved setae on inner side of inner ramus. Sternal gills on pereonites 2 to 7.</p><p>Description of male: Mean of body length: 5.31 ± 0.61 mm (n=6), mean of head length: 0.68 ± 0.06 mm (n=6). Body surface smooth. Eyes ovoid and pigmented. Epimeral plate slightly acuminate (Fig 15A).</p><p>Antenna 1 (Fig. 15B) shorter than antenna 2 (1/4 times); shorter than half body length; peduncle slightly longer than head length, all segments of peduncle with group of simple and cuspidate setae; first article longer than second; third article slightly shorter than second; flagellum with 9 articles, longer than peduncle, with group of simple setae occurring on all articles. Aesthetascs were not observed.</p><p>Antenna 2 (Fig. 15C) reaching half the length of the body; peduncle slightly longer than head length; flagellum with 13 articles, longer than peduncle, with a group of simple setae occurring on all articles.</p><p>Basic amphipodan mandible type (in sensu of Watling 1993), with palp absent. Right mandible (Fig. 15D) incisor process with four denticles, and two pappose setae. Left mandible (Fig. 15E) incisor process with six denticles; lacinia mobilis with seven denticles (four long, three short), and three pappose setae under lacinia mobilis. In both mandibles, the molar process is large, cylindrical and triturative, with one long pappose seta on inner margin.</p><p>Upper lip (Fig. 15F) margins rounded, distal borders covered by setules, and few smaller simple setae.</p><p>Lower lip (Fig. 15G) outer lobes rounded, with many setules on ventral face and inner borders.</p><p>Maxilla 1 (Fig. 15H) palp uniarticulate, not reaching half of the distance between the base of palp and base of setae on outer plate; inner plate slender, 1/3 shorter than the outer plate, with two apical pappose setae, with many setules along on the margins; outer plate with nine distal serrate setae.</p><p>Maxilla 2 (Fig. 15I) inner plate subequal in length to outer plate; inner plate with one robust and one shorter papposerrate setae proximally on inner margin, apex with many serrate and simple setae; outer plate with many serrate and simple setae on the apex.</p><p>Maxilliped (Fig. 15J) inner plate longer than wide, slightly shorter than outer plate, apically rounded with three cuspidate setae in cone-shaped, inner borders with five long pappose setae and apex of inner plate with many small pappose setae, surface dorsal with several setules; outer plate longer than wide, apically rounded, apex and inner border with several simple setae; palp with four articles, article 1 with 1 or 2 simple setae, inner margin with 1 to 3 simple setae; outer margin of article 2 with two simple setae and inner borders with a several long and slender simple setae; inner margin of article 3 with several long simple setae and apex with some papposerrate setae; dactyl smooth, apex with one long simple setae, and another three short simple setae subapical.</p><p>Gnathopod 1 (Figs 16A, B) subchelate; basis longer than wide, with two small setae on dorsal margin and a group of simple setae on disto-posterior border; ischium longer than wider with a group of simple setae on distoposterior border; merus with disto-posterior border rounded with simple setae; carpus longer than wide, posterior lobe convex, forming a shell-shaped structure with many serrate setae distributed along the margin, inner surface with three simple setae, border disto-anterior with four long serrate setae; propodus longer than wide, length about 1.2 times of maximum width, hammer-shaped, inner face with five serrate setae arranged in one row, anterior and posterior margin with one simple setae, comb-scales on disto-anterior and disto-posterior border, disto-anterior border with a group of long simple setae; outer face of propodus not observed; palm flat with length shorter than posterior margin of propodus (1.9 times) and several simple setae (some long, some short), distal margin with one cuspidate seta with accessory seta; dactyl claw-like, reaching palm angle, covered by comb-scales and with one simple setae in the outer margin.</p><p>Gnathopod 2 (Figs 16C, D) subchelate; basis long with three simple setae on dorsal margin, distal margin of basis and ischium with a group of simple setae; merus slightly longer than wider, posterior border rounded, with simple setae; carpus with posterior lobe elongated, forming a shell-shaped structure with many serrate setae distributed along the margin, disto-anterior margin with two simple setae; propodus ovate, length about 1.3 times of maximum width, with comb-scales on disto-posterior margin, margin disto-anterior with a cluster of short simple setae, anterior margin with one simple seta, and posterior margin with two or three simple setae; palm transverse, longer than posterior margin of propodus (1.2 times), slightly convex with several strong cuspidate medium-length and short setae, and some simple setae, distal margin of the palm with one cuspidate setae with accessory seta; dactyl claw-like and smooth, outer margin with one short simple seta and inner surface with six tiny setae, length congruent with palm.</p><p>Pereopods 3 and 4 (Figs 17A, B) similar in size and shape; posterior margin of carpus and propodus with cuspidate setae with accessory seta and simple seta; posterior margin of merus and basis with simple setae; dactyl less than half the length of propodus, surface smooth with simple seta. Coxal plates longer than wide, pereopod 4 excavated posteriorly; both coxal plates with small simple setae on margin, outer surface covered with microtrichs.</p><p>Pereopods 5 to 7 (Figs 17C–E): coxal plate of pereopod 5 wider than long with two lobes, anterior lobe slightly shorter than posterior; coxal plate of pereopod 6 wider than long with anterior lobe 1/3 of posterior lobe length; coxal plate of pereopod 7 wider than long with lobe unique; all coxal plates with small simple setae on margins and outer surface with covered by microtrichs. Pereopod 5 visibly shorter than pereopods 6 and 7, the latter two similar in length, posterior margin of basis of peraeopods 5 to 7 oval, less expanded in 6, borders finely serrate with simple setae; anterior margins of merus, carpus and propodus with groups of 2-5 cuspidate setae with one accessory seta on anterior margins; dactylus less than half the length of propodus, with simple seta.</p><p>Pleopods (Fig. 18A) all pleopods similar, peduncle shorter than ramus, biramous, ramus multi-annulated and both ramus with many long plumose setae.</p><p>Uropod 1 (Fig. 18B) peduncle slightly longer than ramus, peduncle with six cuspidate setae on dorsal surface with accessory setae; ramus subequal in length; inner ramus with two dorsal cuspidate setae with accessory seta, one long curved setae on inner side, four distal cuspidate setae with accessory setae (one long), and two cuspidate setae o the apex; outer ramus with three dorsal cuspidate setae with accessory setae, two subapical cuspidate setae with accessory seta, and two robust cuspidate setae on the apex.</p><p>Uropod 2 (Fig. 18C) shorter than uropod 1, peduncle slightly longer than wide with four cuspidate setae on dorsal with accessory setae; inner ramus with two dorsal cuspidate setae with accessory seta, three subapical cuspidate setae with accessory seta and two cuspidate setae o the apex; outer ramus with two dorsal cuspidate setae with accessory seta, two subapical cuspidate setae with accessory seta and two cuspidate setae on the apex.</p><p>Uropod 3 (Fig. 18D) shorter than peduncle of uropod 1, subequal in length in relation to peduncle of uropod 2; peduncle longer than wide and wider than ramus, with three simple setae on basis and three cuspidate setae with accessory seta on the apex; outer ramus inarticulate, slightly longer than peduncle, with three simple setae and one strong and smaller cuspidate setae apically.</p><p>Telson (Fig. 18E) wider than long, apically rounded, bearing three cuspidate setae with accessory setae unsymmetrically distributed on the distal margin and two small plumose setae on both margin sides.</p><p>Coxal gills sac-like, present on pereonites 2 to 6.</p><p>Sternal gills tubular, present on pereonites 2 to 7.</p><p>Description of the female. CCUFLA 442, body length: 4.30 mm; head length: 4.3 mm. Antenna 1 (Fig. 19A) shorter than antenna 2 (1/4 times), flagellum with eight articles. Antenna 2 (Fig. 19B) reaching half the length of the body, flagellum with nine articles.</p><p>Gnathopod 1 (Figs 19C, D) subchelate; basis longer than wider; ischium and merus with comb-scales in posterior margin; posterior lobe of carpus convex, forming a shell-shaped structure with many serrate setae distributed along the margin, inner face with three long simple setae, disto-anterior margin with a group of simple setae; propodus slightly longer than wide, length about 1.2 times of maximum width hammer-shaped, comb-scales in distoposterior and disto-anterior margin, inner face with five serrate setae arranged in one row; outer face of propodus not observed palm margin slightly shorter than posterior margin length of propodus (1.3 times) with two long and slender simple setae with several simple and cuspidate setae smaller, distal margin with one robust cuspidate setae with accessory setae; dactyl claw-like with comb-scales, one plumose seta on dorsal margin, length reaching distal border of palm of propodus.</p><p>Gnathopod 2 (Figs 19E, F) subchelate; basis, ischium, merus and carpus similar to gnathopod 1; propodus longer than wider, rectangular shape, length about 1.7 times of maximum width, differing from male gnathopod 2 in shape and size, inner face with four serrate setae arranged in one row, disto-anterior and disto-posterior border with several comb-scales, disto-posterior border with two simple setae; palm slightly flat, smaller than 1/2 the maximum posterior margin length of propodus with two long and slender simple setae and some smaller cuspidate setae with accessory seta, distal margin with only one small and robust cuspidate seta with accessory setae; dactyl claw-like, reaching the length of palm with comb-scales and one plumose seta on dorsal margin.</p><p>Intraspecific variation. There was variation in the number of setae in the uropod 3, with a difference even between individuals. In some individuals, the peduncle presents six cuspidate setae, and a long simple seta on the inner margin of the peduncle. However, in the other peduncle the simple seta on the inner margin was absent, and the ramus shows a robust cuspidate seta, but the number of cuspidate setae is upper of three (Fig. 20A). The telson presented a different shape for some individuals, with a rectangular shape and the presence of four cuspidate setae on the apex and three small plumose setae on both margin sides (Fig. 20B).</p><p>Measurements. For males, the mean body length was 5.57 ± 0.91 mm, while the mean head length was 0.62 ± 0.14 mm (n=229). The smallest male specimen had 3.2 mm of body length, and 0.3 mm of head length, while the largest male reached 8.3 mm of body length, with head length reaching 1.0 mm. For females, the mean body length was 4.7 ± 0.9 mm, and the mean head length was 0.56 ± 0.13 mm (n=346). The body size of the smallest female reached 2.4 mm and the head length, 0.3 mm, while the body size of the largest female measured 8.0 mm and its head length, 0.9 mm.</p><p>Etymology. The specific name, sambaqui, is a word of Tupi etymology (tamba = shellfish, and ki = pilling-up). The term describes the main characteristics of the coastal region of Santa Catarina during the first arrivals from Europe, regions with enormous amounts of shellmounds. The term also is attributed to the first inhabitants of the region of the municipality of Passo de Torres, called “men of sambaqui”.</p><p>Habitat. Freshwater, epigean. Hyalella sambaqui n. sp. was found in intermittent and temporary ponds, with a size-area smaller than one-hectare, depth with 50 cm (± 20 cm), and feature emergent and floating vegetation in the margins of the ponds.</p><p>Distribution. Hyalella sambaqui n. sp. was recorded in four wetlands across the extension of the Coastal Plain of Santa Catarina (Fig. 1). The sites P4 and P5 feature permanent hydroperiod, while sites P6 and P7 has a temporary hydroperiod. Of the four collection sites, only site P5 is isolate, without hydrological connection with any other water bodies. In all sampling sites, there is the presence of herbaceous vegetation in margin of the ponds, with total size-area ranging from 2,306 m ² to 5,340 m ² and depth not exceeding 50 cm, ranging around 20 cm in the sites P4 and P6.</p><p>Taxonomic remarks. In general, the new species shares some morphological characteristics of taxonomic importance with most epigean species of Hyalella from Southern of the Brazil. As well as most species Hyalella sambaqui n. sp. shows one long curved seta on the inner ramus of uropod 1 (except in H. pseudoazteca González &amp; Watling, 2003, in which the curved seta is absent). Hyalella sambaqui n. sp. also shares with most other species of the genus the body surface smooth (except with H. kaingang, that has flanges on pleonites 1 and 2; H. pleoacuta, with flanges on pereion 7 and pleonites 1, 2 and 3; and H. pseudoazteca, with flanges on pereion 7 and pleonites 1 and 2).</p><p>Hyalella sambaqui n. sp. shares some similarities with Hyalella palmeirensis, such as the number of serrate setae on the inner face of the propodus of gnathopod 1, the number of cuspidate setae on the inner side of the inner ramus of uropod 1, and the number of cuspidate setae on the peduncle of the inner and outer rami of uropod 2. However, both species differ in the number of setae in the peduncle of uropod 1 ( H. palmeirensis shows four setae), number of apical and plumose setae on telson ( H. palmeirensis has two long simple and three plumose setae), papposerrate setae in the inner plate of the maxilla 2 ( H. palmeirensis shows one robust papposerrate setae), ornament on the distal inner margin of gnathopod 2 (absent in H. palmeirensis), setae on telson ( H. palmeirensis with two long simple and three plumose accessory setae), and sternal gills in the pereonites ( H. palmeirensis has gills in pereonites 3 to 7).</p><p>Regarding the number of the articles of the flagellum in antennae 1 and 2, H. bonariensis present between 9–12 and 12–15 articles, respectively, being similar to Hyalella sambaqui n. sp., besides that share the presence of sternal gills in the pereonites from 2 to 7; the number of papposerrate setae on the inner plate of the maxilla 1; the number of serrate setae ventrally of the propodus of gnathopod 1. They differ in the setae of the inner plate of the maxilla 2 ( H. bonariensis with two rows of simple setae; Hyalella sambaqui n. sp. with several serrulate and simple setae); peduncle of uropod 3 ( H. bonariensis with six cuspidate and one simple setae; Hyalella sambaqui n. sp. with three cuspidate setae).</p><p>As in H. sambaqui n. sp., H. gauchensis and H. georginae present plumose setae on the apex of the telson, however, differs in number of cuspidate setae on the inner and outer rami of uropod 1; the number of serrate setae on the inner face of the propodus of gnathopod 1 ( H. sambaqui n. sp. with five serrate setae; H. gauchensis and H. georginae with 9 or 10 and 9 serrate setae, respectively), and in the outer plate of the maxilla 2 ( H. gauchensis and H. georginae with several simple setae apically; and H. sambaqui n. sp. with many serrate and simple setae).</p><p>Hyalella sambaqui n. sp. differs from H. castroi in the number and type of setae on the inner face of the propodus of gnathopod 1 ( H. castroi with more than ten papposerrate setae), and the number and type of setae on the inner plate of the maxilla 2 ( H. castroi with one strong pappose seta, and H. sambaqui n. sp. with two papposerrate setae on inner margin).</p><p>Hyalella sambaqui n. sp. differs from H. curvispina in the number of setae on the inner face of the propodus of gnathopod 1 ( H. curvispina with five to seven setae arranged to 3 rows), just like in the number of setae on the peduncle of uropod 1 ( H. curvispina with seven setae), and the number of setae on the inner and outer rami of uropod 2 ( H. curvispina with two or three distal setae and eight setae apically on the inner ramus, and the outer ramus with three distal setae and four setae apically). However, H. curvispina is similar to H. sambaqui n. sp. in the number of setae on the apex of the peduncle of uropod 3 (with three setae), but differs on the number of setae on the apex of the both rami of uropod 3 ( H. curvispina with eight slender and one robust setae).</p><p>Hyalella sambaqui n. sp. also resembles H. brasiliensis Bousfield, 1996 described from Rio dos Patos, Paraná state. The description of H. brasiliensis is old and shows few morphological information. However, it is possible to observe that both species show some similarities, such as the presence of sternal gills in the pereonites 2 to 7; the form and number of plumose setae on the inner margin of the inner plate of the maxilla 2, and also in the size of the peduncle in relation to the size of the ramus of uropod 1. Hyalella sambaqui n. sp. differs from H. brasiliensis in the number of articles in the flagellum of antennae 1 and 2 ( H. brasiliensis with 14 and 19 articles, respectively), the number of the setae on the outer ramus of uropod 1 ( H. brasiliensis with four marginal setae on outer ramus), and in length of the ramus of uropod 2 ( H. brasiliensis shows ramus slightly shorter than peduncle while in Hyalella sambaqui n. sp. ramus is slightly longer than peduncle).</p><p>Hyalella sambaqui n. sp. also shows some differences in relation to the two species recently described from the Santa Catarina state. Hyalella catarinensis differs from Hyalella sambaqui n. sp. by the absence of serrate apical setae on the outer plate of the maxilla 2, absence of serrate setae on the inner surface of gnathopod 1, and absence of pappose setae on the inner plate of the maxilliped. Hyalella catarinensis also differs by the number of cuspidate setae on the peduncles of uropods 1 and 2 ( H. catarinensis with five cuspidate setae with accessory setae on the peduncle of uropod 1, and with three cuspidate setae on the peduncle of uropod 2).</p><p>Hyalella rioantensis differs from Hyalella sambaqui n. sp. due to the presence of papposerrate setae and the absence of simple setae on the inner plate of the maxilla 2, the absence of serrate setae on the inner margin of gnathopod 1, and the number of cuspidate setae on the peduncles of uropods 1 and 2 ( H. rioantensis with four to six cuspidate setae with accessory setae on the peduncle of uropod 1, and with three or four cuspidate setae with accessory setae on the peduncle of uropod 2).</p><p>Hyalella sambaqui n. sp. differs from Hyalella minuana n. sp. and Hyalella lagoana n. sp. in the number of serrate setae on the inner surface of gnathopod 1 (nine serrate setae on Hyalella minuana n. sp.; four serrate setae on Hyalella lagoana n. sp.); the number of cuspidate setae on the inner ramus of uropod 2 (two cuspidate setae on Hyalella sambaqui n. sp.; three cuspidate setae on Hyalella minuana n. sp. and Hyalella lagoana n. sp.); and in the format of telson, besides the presence of plumose setae in margins of the telson only Hyalella sambaqui n. sp. .</p><p>Distribution. The distribution of Hyalella species in wetlands along the southern Brazilian Coastal Plain (states of Santa Catarina and the Rio Grande do Sul) is structured according to the freshwater ecoregions and biomes present in the region (Fig. 1). Hyalella minuana n. sp. occurred exclusively in the Pampa biome and Laguna dos Patos hydrographic ecoregion, while Hyalella sambaqui n. sp. occurred exclusively in the Atlantic Forest biome and in two freshwater ecoregions (Southeastern Mata Atlântica and Tramandaí-Mampituba). Hyalella lagoana n. sp. occurred along the transition between Atlantic Forest and Pampa biomes and the in two ecoregions (Laguna dos Patos and Southeastern Mata Atlântica). Finally, no Hyalella species recorded in the study occurred in sympatry with any of the other ones.</p></div>	https://treatment.plazi.org/id/03CA87AD1614FF8AFF76FDE6397E9BF9	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Talhaferro, Jordan Tuparai;Bueno, Alessandra Angélica De Pádua;Pires, Mateus Marques;Stenert, Cristina;Maltchik, Leonardo;Kotzian, Carla Bender	Talhaferro, Jordan Tuparai, Bueno, Alessandra Angélica De Pádua, Pires, Mateus Marques, Stenert, Cristina, Maltchik, Leonardo, Kotzian, Carla Bender (2021): Three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from the Southern Brazilian Coastal Plain. Zootaxa 4970 (2): 257-292, DOI: 10.11646/zootaxa.4970.2.2
