taxonID	type	description	language	source
03898794FFAD8366FF1866E5FC1B9467.taxon	description	(Figs. 2 – 8)	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFAD8366FF1866E5FC1B9467.taxon	materials_examined	Type material. Holotype male, body length = 7.30 mm, head length = 0.70 mm, Ponte Alta River, municipality of Bocaina do Sul, Santa Catarina, Brazil, (27 ° 44 ′ 4.4 ″ S 49 ° 59 ′ 1.0 ″ W), MZUSP 44141. Paratypes: UFRGS 6937 - twenty five individuals and two males and one female on slide; CCUFLA 449 - 25 whole individuals.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFAD8366FF1866E5FC1B9467.taxon	diagnosis	Diagnosis. Antenna 1 with pappose setae. Antenna 2 with pappose and serrate setae. Upper lip and lower lip with several simple setae. Maxilla 2 with lateral simple setae. Gnathopod 1 basis, merus, ischium and carpus with serrate setae with accessory seta and comb-scales. Gnathopod 2 merus and carpus with serrate setae with accessory seta; palm 1 x longer than posterior margin of propodus, slope oblique; dactylus proximal margin strongly serrated. Uropod 1 without curved seta on inner ramus. Uropod 3 with two dorsal simple setae. Microtrichs present on antenna 1 and 2, maxilliped, gnathopods 1 and 2, pereopods, uropods and telson.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFAD8366FF1866E5FC1B9467.taxon	description	Description of paratypes males. Mean body length: 6.37 ± 1.96 mm (N = 10 from 4.34 to 10.84 mm); mean head length: 0.63 mm ± 0.14 mm (N = 10, from 0.43 to 0.90 mm). Body surface smooth. Head 1.9 x smaller than the first two pereonites. Eyes rounded and pigmented. Coxae 1 – 3 subequal in size, slightly overlapping, coxae 3 and 4 longer than 1 and 2 (Figs. 4 A – D, 5 A, B). Coxa 3 wider than 4 (Fig. 5 A, B). Coxa 4 longer than wide, excavated posteriorly (Fig. 5 B). Coxa 5 posterior lobe longer than anterior lobe (Fig. 5 C). Coxa 6 wider than long (Fig. 5 D). Epimeral plates accuminated. Antenna 1 (Fig. 3 A) about 2.8 x smaller than body length, 1.3 x smaller than antenna 2, flagellum with 10 – 11 articles, 1.5 x longer than peduncle; article 1 with three lateral pappose setae and two inner simple setae with accessory seta; article 2 with one lateral pappose seta; aesthetascs (Fig. 9 A) occurring on flagellum from article 3 distally; microtrichs present from article 2 to 9. Antenna 2 (Fig. 3 B) 2.2 x smaller than body length; peduncle slender, 2.2 x longer than head; flagellum with 17 – 19 articles, 1 x longer than peduncle; article 3 with four apical serrate setae; article 4 with three lateral pappose setae, two inner and two apical serrate setae; article 5 with one lateral pappose seta; microtrichs present from article 3 to 20, absent on articles 7 and 8. Mandible incisor toothed; left mandible (Fig. 3 C) lacinia mobilis with five teeth, setal row with four papposerrate (setules only on one side of the seta) and one serrate seta (with setules on both sides of seta, uppermost superior seta in the illustration), with setules, molar process with an accessory seta; right mandible (Fig. 3 D) with four papposerrate setae and setules; molar process broad and oval, without accessory seta. Upper lip (Fig. 3 E) distal margin rounded; outer margin covered by simple setae and inner margin with setules on ventral and dorsal faces. Lower lip (Fig. 3 F) outer lobes rounded and distally notched, with several simple setae and setules on dorsal and ventral faces. Maxilla 1 (Fig. 3 G) inner plate slender, 1.9 x shorter than outer plate, with two apical papposerrate setae and several setules dorsally. Outer plate with nine serrate setae and several setules dorsally. Palp short, uniarticulate, 1.7 x wider than long, reaching less than half the distance between the base of the palp and base of setae on the outer plate, with apical setules. Maxilla 2 (Fig. 3 H) inner plate 1.3 x shorter than outer plate, with one papposerrate seta, seven serrulate setae, several lateral simple setae and dorsally setules; outer plate with several distal and lateral simple setae. Maxilliped (Fig. 3 I, J) inner plate 2.7 x longer than wide, with three cuspidate distal setae and 16 papposerrate setae; outer plate 1.1 x longer than inner plate, with three pappose and simple setae; palp 2.3 x longer than inner and 2 x longer than outer plate, with four articles; article 1 1.5 x longer than wide, outer margin with simple setae; article 2 1.4 x longer than wide, inner margin with several long simple setae; article 3 1.5 x longer than wide, inner margin with seven serrate and several long simple setae, outer margin with long simple setae; article 4 1.9 x shorter than third article, 2.8 x longer than wide, with distal setae simple and 1.4 x longer than nail, with comb-scales, and distal nail present. Gnathopod 1 (Fig. 4 A – C) subchelate; coxal plate 1.7 x wider than long, with simple setae on the margin; basis with one inner serrate seta; basis, merus and ischium with disto-posterior serrate setae with accessory seta, a new type of seta that hadn’t been described for the genus (Fig. 8 D) and posterior comb-scales; carpus 1.5 x longer than wide, 1.3 x longer than propodus, with six serrate setae with accessory seta on margin (Fig. 8 D), lateral distal lobe produced with polygonal pattern, several serrate setae with accessory seta and comb-scales on posterior lobe; propodus 1.4 x longer than wide, hammer-shaped, with several simple long setae, comb-scales on disto-anterior margin, inner margin with four serrate setae, with few simple, comb-scales on the disto-posterior margin; palm slope transverse, with many simple setae, margin slightly convex, posterior distal corner with two strong cuspidate setae with accessory seta; dactylus claw-like, comb-scales present on distal margin, with one plumose seta dorsally. Microtrichs present on coxal plate and propodus. Gnathopod 2 (Fig. 4 D) subchelate; coxal plate 1.8 x wider than long, with several simple setae on the margin; basis with several simple setae with accessory seta, one serrate seta with accessory seta and comb-scales on disto-posterior margin; ischium with several simple setae with accessory seta and comb-scales on disto-posterior margin; merus with five serrate setae with accessory seta on disto-posterior margin and comb-scales; carpus (Fig. 4 E) 1.9 x wider than long, posterior lobe slim produced between merus and propodus, forming scoop-like structure, posterior margin with polygonal pattern, several serrate setae with accessory seta and comb-scales, two serrate setae with accessory seta on inner margin and two on disto-anterior, anterior margin with comb-scales; propodus (Fig. 4 F) ovate, 1.2 x longer than wide, with two anterior simple setae, comb-scales present, palm 1 x longer than posterior margin of propodus, slope oblique, margin with one row of several cuspidate setae with accessory seta and simple setae, posterior distal corner with one long and strong cuspidate seta and with a cup for dactylus; dactylus claw-like, congruent with palm, proximal margin strongly irregular, plumose seta dorsally absent. Microtrichs present on coxal plate and dactylus. Pereopods 3 to 7 (Fig. 5 A – E) simple. Pereopods 3 and 4 basis with serrate setae and simple setae with accessory seta, respectively; merus and carpus posterior margin with several cuspidate with accessory seta and simple setae with accessory seta; propodus posterior margin with cuspidate and simple setae; dactylus 2.3 x and 2 x shorter than propodus, respectively, with a plumose seta dorsally and one strong cuspidate seta on proximal margin. Posterior margin of merus, carpus and propodus on pereopods 5 to 7 with several cuspidate and simple setae, some with accessory seta; dactylus approximately 2.5 x shorter than propodus, with one plumose seta dorsally and one strong cuspidate seta on proximal margin. Pereopods 6 basis with serrate setae on posterior margin and on Pereopod 6 and 7 simple setae on posterior margin with accessory seta. Pereopods 3 and 4 similar in size; pereopod 5 smaller than others; pereopod 6 1.3 x subequal in length to pereopod 7. Microtrichs present on coxal plates of pereopods 3 to 7; on basis of pereopods 5 to 7; on ischium of pereopods 3, 4 and 7; on merus and propodus of pereopods 4, 6 and 7; on carpus of pereopods 3 to 7; on dactylus of pereopods 6 and 7. Pleopods (Fig. 6 A) peduncle 2.5 x longer than wide, 1.7 x shorter than the mean size of rami, with two coupling spines; both rami with several plumose setae. Uropod 1 (Fig. 6 B) 1.7 x longer than uropod 2; peduncle 1.2 x longer than outer ramus and 1.2 x longer than inner ramus, with six cuspidate setae some with accessory seta; inner ramus slightly longer than outer ramus, 5.9 x longer than wide, with three dorsal cuspidate setae with accessory seta on margin and six cuspidate setae apically, some with accessory seta, without curved seta; outer ramus 5.9 x longer than wide, with three dorsal cuspidate setae on margin, some with accessory seta and four cuspidate setae apically. Microtrichs present on peduncle, inner and outer ramus. Uropod 2 (Fig. 6 C) 1.7 x smaller than uropod 1, peduncle 1.1 x shorter than outer ramus and inner ramus, 2.2 x wider than outer ramus and 2.1 x than inner ramus, with four cuspidate setae with accessory seta; inner ramus with two dorsal cuspidate setae with accessory seta and seven apical cuspidate setae some with accessory seta; outer ramus with three dorsal cuspidate setae with accessory seta and four apical cuspidate setae, only one with accessory seta. Microtrichs present on peduncle, inner and outer ramus. Uropod 3 (Fig. 6 D) 1.6 x shorter than peduncle of uropod 1 and 1.2 x than peduncle of uropod 2; peduncle 1.6 x longer than wide, with five distal cuspidate setae some with accessory seta, two dorsal simple setae; inner ramus absent; outer ramus uniarticulate, 1 x longer than peduncle, 3.7 x longer than wide, with six simple and one cuspidate seta apically. Microtrichs present on peduncle. Telson (Fig. 6 E, F) entire, subequal in length and wide, apically rounded, with two apical cuspidate setae, with two simple setae laterally, microtrichs present (Fig. 6 E). Variations: telson about 1.2 x larger than wide with three apical cuspidate setae with accessory seta, and three lateral serrate setae. Coxal gills sac-like present on pereonites 2 to 6. Sternal gills tubular present on pereonites 2 to 7. Female (Fig. 2 B). Mean body length: 5.88 ± 1.08 mm (N = 10, from 4.20 to 7.80 mm); mean head length: 0.59 ± 0.09 mm (N = 10, from 0.44 to 0.74 mm). Gnathopod 1 (Fig. 7 A) similar to male Gnathopod 1; basis with inner serrate setae; basis, ischium and merus with distal serrate setae with accessory seta; ischium and merus with simple setae with accessory seta, comb-scales present in both articles; carpus 1.5 x longer than wide, posterior lobe produced and forming scoop-like structure, pectinate margin with comb-scales, several serrate setae with accessory seta and polygonal pattern, inner margin with six serrate setae with accessory seta; propodus 1.5 x longer than wide, hammer-shaped, with comb-scales on anterior and posterior margins, anterior margin with one serrate and two simple setae; palm 2 x shorter than posterior margin of propodus, without comb-scales, inner margin with 7 serrate setae with accessory seta, palm slope transverse; dactylus claw-like, with comb-scales, plumose setae dorsally. Microtrichs present on coxal plate. Gnathopod 2 (Fig. 7 B) similar in size and shape to Gnathopod 1; basis, ischium, merus and carpus with few serrate setae with accessory seta, comb-scales present on ischium; carpus with serrate setae with accessory seta on disto-anterior margin, four serrate setae on inner margin, posterior lobe produced and forming scoop-like structure, pectinate margin with comb-scales, serrate setae with accessory seta and polygonal pattern; propodus 1.9 x longer than wide, with reduced quantity of comb-scales on posterior margin, inner margin with three serrate setae, palm transverse with several long simple setae; dactylus with comb-scales and plumose seta on distal margin. Microtrichs present on coxal plate. Telson (Fig. 7 C, D) subequal in length and wide, similar in shape to male, with three apical simple setae and two lateral simple setae on both sides (Fig. 7 C). Variations: four apical cuspidate setae, with or without accessory seta, two and three lateral serrate setae, microtrichs present. Taxonomical remarks. Comparisons of characteristics of the new species and other species registered from state of Santa Catarina, Brazil can be seen on Tables 1 and 2. Hyalella carsone sp. nov. shares the absence of curved seta on the inner ramus of uropod 1 with epigean species: H. bala Penoni & Bueno, 2021, H. dielaii Pereira, 2004, H. gracilicornis (Faxon, 1876), H. longipropodus Limberger, Graichen & Castiglioni, 2021, H. longistila (Faxon, 1876), H. meinerti Stebbing, 1899, H. montana Rodrigues, Senna, Quadra & Bueno, 2017, H. minensis Bastos-Pereira & Bueno, 2013, H. pseudoazteca González & Watling, 2003, H. virgineae Lares, Penoni & Bueno, 2021 and H. warmingi Stebbing, 1899. In this group, the new species differs from all of them by the presence of serrate setae with accessory seta on gnathopods (basis, merus, ischium and carpus), a new type of seta not mentioned before for the genus, by the presence of pappose setae on antenna 1 and serrate and pappose setae on antenna 2 on peduncles, the simple setae present on upper and lower lip, the dactylus with proximal margin strongly serrated, the microtrichs present on antennae 1 and 2, maxilliped, gnathopods 1 and 2, pereopods, uropods and telson. Habitat. Epigean.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFAD8366FF1866E5FC1B9467.taxon	etymology	Etymology. The species epithet “ carsone ” is in reference to Rachel Carson, a biologist, environmentalist and acclaimed author, by all of her books is the famous ‘ Silent Spring’.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFA3837CFF1866E5FC7496D3.taxon	description	(Figs. 9 – 14)	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFA3837CFF1866E5FC7496D3.taxon	materials_examined	Type material. Holotype male, body length = 5.23 mm, head length = 0.77 mm, flooded area, on road SC 135, municipality of Campos Novos (27 ° 19 ′ 29 ″ S 51 ° 12 ′ 28 ″ W), May / 2013, MZUSP 44142. Paratypes: UFRGS 6938 - thirty eight whole males, four whole ovigerous females and twenty one whole juveniles; CCUFLA- 450 four males and four females in slides.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFA3837CFF1866E5FC7496D3.taxon	diagnosis	Diagnosis. Antenna 1 with pappose setae. Antenna 2 with serrate setae. Upper lip and lower lip with simple setae. Maxilla 1 with abundant setules with different calibers. Maxilla 2 with several simple setae on the inner face. Gnathopod 1 with serrate setae with accessory seta on basis, ischium, merus, carpus and propodus; palm slightly serrated on female. Gnathopod 2 basis, ischium, merus and carpus with serrate setae with accessory seta; palm slope oblique, not sinuous, with margin inconspicuously serrated. Female gnathopod 2 coxal plate with two lateral serrate setae and several setules on inner face. Pleopod with simple setae on the inner face of the peduncle and inner ramus. Uropod 3 peduncle with two dorsal simple setae. Microtrichs present on antenna 1 and 2, maxilliped, gnathopods 1 and 2, pereopods, uropods 1 and 3 and telson.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFA3837CFF1866E5FC7496D3.taxon	description	Description of paratypes males. Mean body length: 5.8 ± 0.6 mm (N = 9, from 4.7 to 6.8 mm); mean head length: 0.6 mm ± 0.1 mm (N = 9, from 0.5 to 0.8 mm). Body surface smooth. Eyes round and pigmented. Coxae 1 – 3 subequal in size and shape, slightly overlapping. Coxa 1 on gnathopod 1 is similar to 2 on gnathopod 2 and 3 on pereopod 3 (Figs. 11 A, B and 12 A). Coxa 3 wider than 4 (Figs. 12 A, B). Coxa 4 1.1 x longer than wide, excavated posteriorly (Fig. 12 B). Coxa 5 posterior lobe narrower than anterior lobe (Fig. 12 C). Coxa 6 is 0.98 x wider than long (Fig. 12 D). Coxa 7 reduced (Fig. 12 E). Head about 1.3 x smaller than the first two thoracic segments. Epimeral plates accuminated. Antenna 1 (Fig. 10 A) about 2.2 x smaller than body length, 1.6 x smaller than antenna 2, 1.3 x longer than peduncle of antenna 2; peduncle 1.2 x longer than head; article 1 with one pappose seta and 1.1 x longer than 2, article 3 1.4 x shorter than article 1 and 1.3 x shorter than article 2; flagellum with 9 – 11 articles, 1.4 x longer than peduncle; aesthetascs (Fig. 8 B) occurring on flagellum from the article 5 to 9 distally. Microtrichs occurring from article 1 to 11, except on article 5. Antenna 2 (Fig. 10 B) 1.4 x smaller than body length; peduncle slender, 2.3 x longer than head; article 3 with one apical serrate seta and simple seta; article 4 1.5 x shorter than article 5 with two inner serrate setae; microtrichs occurring on article 5; flagellum with 13 – 16 articles, 1.1 x longer than peduncle. Mandible without palp; incisor toothed; left mandible (Fig. 10 C) lacinia mobilis with five teeth and setal row with six papposerrate setae and setules, molar process with accessory seta; right mandible (Fig. 10 D) with four papposerrate setae and setules, molar process broad and cylindrical with accessory seta. Upper lip (Fig. 10 E) margin rounded; distal border covered by setules and simple setae on ventral and dorsal faces. Lower lip (Fig. 10 F) outer lobes rounded and distally notched, with simple setae and setules on dorsal and ventral faces. Maxilla 1 (Fig. 10 G) inner plate slender, 2.4 x shorter than outer plate, with two apical papposerrate setae and abundant setules with different caliber. Outer plate with nine apical serrate setae and setules with different caliber. Palp short, uniarticulate, 1.7 x longer than wide, reaching less than half of the distance between the base of the palp and base of setae on outer plate, with one distal long seta and setules on margin. Maxilla 2 (Fig. 10 H) inner plate with subequal length to the outer plate, with 7 apical serrulate, one apical papposerrate and several simple setae on inner face; outer plate with two apical serrulate setae, several simple setae on apex, on inner face and margin; inner and outer plates covered by several setules. Maxilliped (Fig. 10 I – K) inner plate 2.8 x longer than wide, with three apical cuspidate setae, 11 pappose setae and several setules, without comb-scales; outer plate 1.2 x longer than inner plate, with four serrate and several simple setae, without comb-scales; palp 5.4 x longer than inner plate, with four articles; article 1 1.3 x longer than wide, outer margin with one simple setae; article 2 1.1 x longer than wide, inner margin several long simple setae; article 3 1.5 x longer than wide, inner margin with several long simple setae, outer margin with eight serrate setae, long simple setae and setules, without comb-scales; article 4 unguiform, 1.3 x shorter than third article, 3.3 x longer than wide, 1.3 x longer than nail, with distal simple seta, with comb-scales, and distal nail present. Microtrichs present on inner and outer plate, articles 1 and 2 of palp. Gnathopod 1 (Fig. 11 A – C) subchelate; coxal plate 1.5 x wider than long, with several simple setae on the margin, microtrichs present; basis with dorsal and apical serrate setae with accessory seta, apical simple setae with accessory seta and several comb-scales; ischium with several apical simple setae with accessory seta, with comb-scales; merus with simple setae with accessory seta and comb-scales on distal margin; carpus and propodus with similar length, lateral distal lobe produced with two serrate setae with accessory seta and one simple seta on inner margin, distal anterior margin with several serrate setae with accessory seta, comb-scales and polygonal pattern present; propodus 1.8 x longer than wide, hammer-shaped, with several simple long setae on disto-anterior margin, comb-scale present on disto-anterior and disto-posterior margins, inner margin with two serrate setae with accessory seta, with few simple setae on the disto-posterior margin, with comb-scales; palm slope transverse, with many simple setae and comb-scales, margin slightly convex, posterior distal angle with two long and strong cuspidate setae with accessory seta; dactylus claw-like, comb-scales present on inner and outer margin, with one plumose seta dorsally. Gnathopod 2 (Fig. 11 D – F) subchelate; coxal plate 1.8 x wider than long, with simple setae on the margin and microtrichs present on inner face; basis with two apical serrate setae with accessory seta, one apical and four simple setae with accessory seta on disto posterior margin; ischium with several simple setae with accessory seta and comb-scales on disto-posterior margin, microtrichs present; merus with few simple setae with accessory seta on posterior margin, with comb-scales; carpus 2.1 x wider than long, posterior lobe slim produced between merus and propodus, forming scoop-like structure, margin with comb-scales, several serrate setae with accessory seta and polygonal pattern; propodus ovate, 1.3 x longer than wide, comb-scales present on margin distal posterior; palm 1.3 x smaller than posterior margin of propodus, slope oblique, margin slightly irregular with one row of several cuspidate setae with an robust accessory seta and several simple setae, posterior distal angle with two strong cuspidate setae and with a cup for dactylus; dactylus claw-like, congruent with palm, plumose seta dorsally, comb-scales absent. Pereopods 3 to 7 (Fig. 12 A – E) simple. Pereopod 3 and 4 with several simple setae with accessory seta on basis posterior margin, pereopod 3 with two serrate setae; merus, carpus and propodus posterior margin with several cuspidate and simple setae with accessory seta; dactylus 2.1 x shorter than propodus, in both, with one plumose seta dorsally. Pereopods 5 to 7 merus, carpus and propodus posterior margin with several cuspidate setae some of them with accessory seta, dactylus 2.4 x, 2.8 x and 2.4 x shorter than propodus, respectively, with one plumose seta dorsally. Pereopods 3 and 4 similar sizes; pereopod 5 smaller than others; pereopod 6 longer than pereopod 7. Microtrichs present on coxal plates of pereopods 3 to 6, on basis of pereopods 5 to 7, on ischium of pereopods 3, 4, 6 and 7, on merus of pereopods 3, 4 and 6, on carpus of pereopods 3, 5, 6 and 7 and on propodus of pereopods 3, 5, 6 and 7. Pleopods (Fig. 13 A) peduncle 2.9 x longer than wide, 1.6 x the mean size of rami, with two coupling spines and one simple setae on inner face; both rami with several plumose setae, inner ramus with one simple setae on inner face. Uropod 1 (Fig. 13 B) 1.31 x longer than uropod 2; peduncle 1.4 x longer than outer ramus and 1.3 x to inner ramus, with six cuspidate setae, some of them with accessory seta; inner ramus slightly longer than outer ramus, 5.3 x longer than wide, with two dorsal cuspidate setae with accessory seta on the margin and six apical cuspidate setae with accessory seta, with curved seta; outer ramus 5.4 x longer than wide, with three dorsal cuspidate setae with accessory seta and four apical cuspidate setae, one with accessory seta. Microtrichs present on peduncle and outer ramus. Uropod 2 (Fig. 13 C) 1.4 x smaller than uropod 1, peduncle 1.2 x longer than outer ramus and 1 x than inner ramus, 2.0 x wider than outer ramus and 1.7 x than inner ramus, with four cuspidate setae with accessory seta; inner ramus with two dorsal cuspidate setae with accessory seta and seven cuspidate setae apically; outer ramus with two dorsal cuspidate setae and four apical cuspidate setae. Microtrichs present on peduncle and outer ramus. Uropod 3 (Fig. 13 D) 1.9 x shorter than peduncle of uropod 1 and 1.2 x than peduncle of uropod 2; peduncle 1.6 x longer than wide, with five apical long cuspidate setae with accessory seta and two simple setae on inner face; inner ramus absent; outer ramus uniarticulate, subequal in length to the peduncle, 3.6 x longer than wide, with three cuspidate setae and two simple setae. Microtrichs present on peduncle. Telson (Fig. 13 E, F) entire, 1.2 x longer than wide, apically rounded, with four apical cuspidate setae with accessory seta, with one lateral serrate seta; microtrichs present (Fig. 13 E). Variations: telson subequal in length and wide, with three simple setae on inner face and one lateral pappose setae (Fig. 13 F). Coxal gills sac-like present on pereonites 2 to 6. Sternal gills tubular present on pereonites 2 to 7. Female (Fig. 9 B). Mean body length: 5.19 ± 0.89 mm (N = 10), minimum body length = 4.22 mm, maximum body length = 7.10 mm; mean head length: 0.54 ± 0.55 mm (N = 10), minimum head length = 0.48 mm, maximum head length = 0.83 mm. Gnathopod 1 (Fig. 14 A) similar to male Gnathopod 1; basis with one serrate with accessory seta on inner face and several apically; ischium, merus and carpus with several simple setae with accessory seta, comb-scales present; carpus 1.7 x longer than wide, posterior lobe produced and forming scoop-like structure, with pectinate margin, with several serrate setae with accessory seta and comb-scales; propodus 1.3 x longer than wide, hammer-shaped, with comb-scales, palm 2.7 x shorter than posterior margin of propodus, inner margin with five serrate setae with accessory seta, palm slope transverse slightly irregular; dactylus claw-like, with plumose seta and comb-scales. Microtrichs present on coxal plate, ischium and propodus. Gnathopod 2 (Fig. 14 B) similar in size and shape to Gnathopod 1; coxal plate with two serrate setae on posterior margin and several setules on inner face; basis, ischium and merus with several simple setae with accessory seta; basis, merus and carpus with several serrate setae, comb-scales preset on merus; posterior lobe on carpus with comb-scales, several serrate setae and polygonal pattern; propodus 1.7 x longer than wide, with comb-scales on disto-anterior and disto-posterior margin, inner margin with three cuspidate setae with robust accessory seta; palm slightly irregular, transverse with several long simple setae; dactylus with plumose setae and several comb-scales. Microtrichs present on coxal plate, ischium and propodus. Telson (Fig. 14 C, D) 1.2 x longer than wide, similar in shape to male, with three apical cuspidate setae, one lateral serrate and three serrate on inner face, microtrichs present. Variations: telson 1.2 x longer than wide with four apical cuspidate setae with accessory seta and three simple setae on inner margin (Fig. 14 C). Taxonomical remarks. The new species H. wangarie sp. nov. sp. nov., share some characters with H. carsone sp. nov. sp. nov. like absence of flanges, epimeral plates accuminated, plumose setae on antenna 1 and pappose setae on antenna 2, five teeth on lacinia mobilis and papposerrate setae on mandibles, simple setae on maxilla 1 and 2, palp of maxilliped with comb-scales on article 4, presence of serrate setae with accessory seta on gnathopods, polygonal pattern on posterior lobe of carpus of gnathopods, palm slope oblique on gnathopod 2, simple setae on inner face of peduncle of uropod 3. Additionally, both new species present microtrichs in the same articles. In the comparison between the aesthetascs present on antennae 1, it was possible to determine that the species differ in morphology (see Figs. 3 B and 10 B). Hyalella wangarie sp. nov. sp. nov. shows setules with different calibers on the inner and outer plates on maxilla 1, in addition present pappose setae on the outer plate of maxilla 2. H. wangarie sp. nov. presents microtrichs on inner / outer plates, on article 1 and article 2 of palp on maxilliped, in contrast H. carsone sp. nov. present microtrichs only on article 2. H. wangarie sp. nov. has microtrichs only on the coxal plate of gnathopod 2, but H. carsone sp. nov. has them on propodus as well. The same situation occurs in relation to pappose setae on the coxal plate of gnathopod 2, H. wangarie sp. nov. and H. carsone sp. nov. exhibit them, but H. carsone sp. nov. presents them on basis, merus, carpus and propodus as well. When comparing both species, H. wangarie sp. nov. has comb-scales on ischium, merus and propodus on gnathopod 2, while H. carsone sp. nov. also having on the coxal plate and merus. H. wangarie sp. nov. exhibits the palm slightly serrated on gnathopod 1 (female) and 2 (male), while H. carsone sp. nov. has the proximal margin of dactylus on gnathopod 2 strongly serrated. H. wangarie sp. nov. exhibit simple seta on peduncle and on inner ramus of pleopod, as well present a curved seta on inner ramus of uropod 1, differing from H. carsone sp. nov .. Hyalella wangarie sp. nov. shares the presence of curved seta in the inner ramus of uropod 1 with 20 epigean registered in Brazil, especially those found in the state of Santa Catarina. In this group, the new species differs from its members by having pappose setae on antenna 1, serrate setae on antenna 2 (except from H. catarinensis), palm with slightly serrated margin on female gnathopod 1, serrate setae on coxal plate, simple setae on peduncle and inner ramus of pleopods, microtrichs on antennae 1 and 2, maxilliped, gnathopods 1 and 2, pereopods (except from H. sambaqui), uropods 1 and 3, telson. The new species differs from H. catarinensis and H. sambaqui by the presence of simple setae on upper lip, serrulate setae on maxilla 2 and palm slightly serrated on gnathopod 2. Habitat. Epigean.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
03898794FFA3837CFF1866E5FC7496D3.taxon	etymology	Etymology. The species epithet “ wangarie ” is in honor to Wangari Muta Maathai, an environmental leader and the first African woman to win a Nobel Prize (in 2014), for her career and activism in defense of the environment, human rights and justice. Wangari created the organization Green Belt Movement, which aimed to plant trees by women on the outskirts of Nairobi as a way to protect the soil from erosion.	en	Reis, Giovanna De Oliveira, Bueno, Alessandra Angélica De Pádua, Araujo, Paula Beatriz (2023): Two new species of Hyalella Smith, 1874 (Malacostraca: Amphipoda: Hyalellidae) from the state of Santa Catarina, Brazil. Zootaxa 5319 (3): 351-372, DOI: 10.11646/zootaxa.5319.3.3, URL: http://dx.doi.org/10.11646/zootaxa.5319.3.3
