identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
038F87828E43FFB5A7EBFBDC8E24F80B.text	038F87828E43FFB5A7EBFBDC8E24F80B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cerapus Say 1817	<div><p>Key to Australian species of Cerapus (male)</p><p>1 Recurved spines on telson in 2 rows ......................................................................................... 2 —— Recurved spines on telson in 3 rows .................................................. Cerapus nudus Just, 2009</p><p>2 Antenna 2 longer than antenna 1 ............................................................................................... 3 —— Antenna 2 equal to or shorter than antenna 1 ............................................................................ 4</p><p>3 Coxa 6 with setal fringe ............................................................ Cerapus moonamoona sp. nov. —— Coxa 6 lacking setal fringe ............................. Cerapus alquirta (Barnard &amp; Drummond, 1981)</p><p>4 Pereopods 6–7 dactylus with 2 accessory hooks ....................................................................... 5 —— Pereopods 6–7 dactylus with 1 accessory hook ........................................................................ 7</p><p>5 Rostrum short ......................................................... Cerapus murrayae Lowry &amp; Berents, 2005 —— Rostrum long ............................................................................................................................. 6</p><p>6 Pereopods 3–4 coxa fused to pereonites ................... Cerapus volucola Lowry &amp; Berents, 2005 —— Pereopods 3–4 coxa not fused to pereonites ............. Cerapus bundegi Lowry &amp; Berents, 2005</p><p>7 Antenna 1 very long relative to body length (&gt; 0.9 times body length) ............................................................................................ Cerapus brevirostris sp. nov. —— Antenna 1 less than 0.9 times body length ................................................................................ 8</p><p>8 Gnathopod 2, carpus palm straight .................................................. Cerapus dildilgang sp. nov. —— Gnathopod 2, carpus palm deeply excavate .............................................................................. 9</p><p>9 Pereopod 7 basis with patch of small setae on posterior margin ........... Cerapus lowryi sp. nov. —— Pereopod 7 basis without patch of small setae on posterior margin .................................................................................................. Cerapus chiltoni sp. nov.</p></div>	https://treatment.plazi.org/id/038F87828E43FFB5A7EBFBDC8E24F80B	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.		Plazi	Berents, Penelope B.	Berents, Penelope B. (2023): New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae). Records of the Australian Museum (Rec. Aust. Mus.) 75 (4): 381-403, DOI: 10.3853/j.2201-4349.75.2023.1879, URL: http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879
038F87828E40FFB1A75DFD048E04FDD8.text	038F87828E40FFB1A75DFD048E04FDD8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cerapus brevirostris Berents 2023	<div><p>Cerapus brevirostris sp. nov.</p><p>urn:lsid:zoobank.org:act:CFB4B46E-D166-46BD-A2A4-FA5FE218D2C7</p><p>Figs 1–3</p><p>Holotype: Male, 2.4 mm, AM P.106325, Penneshaw, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=137.93333&amp;materialsCitation.latitude=-35.716667" title="Search Plazi for locations around (long 137.93333/lat -35.716667)">Kangaroo Island</a>, South Australia, Australia, 35°43'S 137°56'E, in Caulerpa sp. on jetty piles, 5 m, I. Loch, 9 March 1978. Paratypes: 1 female, ovigerous, 2.7 mm, AM P.106326; 1 female, ovigerous, 2.5mm, AM P.106327; all with same data as holotype. 1 male, 2.8 mm, AM P.106328; 14 specimens, AM P.106329; 1 male, 2.2 mm, AM P.106330; Stokes Bay, Kangaroo Island, South Australia, Australia, 35°37'S 137°12'E, algae on vertical rock face, 7 m, I. Loch, 4 March 1978. 6 specimens, SAM C14774, Sellicks Beach, South Australia, Australia, 35°20'06"S 138°26'44"E, K. Sheard &amp; H. M. Hale, 16 January 1937; 10 specimens, MV J.13186, north of False Island, King George Sound, Western Australia, Australia, 35°00.702'S 118°10.08'E, 27 m, scuba, SWA-57 G. C. Poore &amp; H. M. Lew Ton, 15 April 1984.</p><p>Additional material examined. 2 specimens, SAM C14775, Sellicks Beach, South Australia,Australia, 35°20'06"S 138°26'44"E, dead low tide, outer edge, K. Sheard, April 1939; 43 specimens, MV J.13190, north of False Island, King George Sound, Western Australia,Australia, 35°01.002'S 117°25.02'E, scuba, 25 m, SWA-56, G. C. B. Poore &amp; H. M. Lew Ton, 15 April 1984; 2 specimens, MV J.13187, south side off Eden Road, Wilson Inlet, Western Australia,Australia, 35°00.702'S 1188°10.08'E, by hand, 0.1 m, SWA-58, G. C. B. Poore &amp; H. M. Lew Ton, 16 April 1984; 5 specimens, AM P.106331, Ningaloo Reef,Western Australia, 21°55'41"S 113°55'11"E, brown algae on rocks under jetty, 13 m, MI WA 979, N. L. Bruce &amp; M. Blazewicz-Paszkowycz, 17 June 2008; 1 male, 6 females,several juveniles, AM P.106332, same data as holotype; 7 specimens, AM P.106333, Red Bluff, Kalbarri, Western Australia, Australia, 27°42'S 114°09'E, rocky shore, mixed coralline algae, 3–4 m, MI WA-480, R. T. Springthorpe, 10 January 1984; 1 female, ovigerous, 2 juveniles, AM P.106334, 500 m off Chinamans Rock, Kalbarri, Western Australia,Australia, 27°42'S 114°09'E, rocky bottom, brown algae with epiphytic coralline algae, 6 m, MI WA-462, J. K. Lowry, 10 January 1984; 1 male, 6 females, AM P.106335, 500 m off Chinaman’s Rock, Kalbarri,WesternAustralia,Australia, 27°42'S 114°09'E, brown alga Padina sp., 6 m, MI WA-465, J. K. Lowry, 10 January 1984; 1 specimen, AM P.106336, 500 m off Chinamans Rock, Kalbarri, Western Australia,Australia, 27°42'S 114°09'E, 6 m, MI WA-460, R.T.Springthorpe, 10 January 1984; 2 females, AM P.106337, Stokes Bay, Kangaroo Island, South Australia, Australia, 35°37'S 137°12'E, 7 m, I. Loch, 4 March 1978; 1 specimen,AM P.106338, 500 m off Chinaman’s Rock, Kalbarri, Western Australia, Australia, 27°42'S 114°09'E, rocky bottom, brown and coralline algae, 6 m, MI WA-459, J. K. Lowry, 10 January 1984; 20 specimens, AM P.106339, Thompsons Bay, Rottnest Island, Western Australia, Australia, 32°00'S 115°32'30"E, airlift sample from Posidonia sp., 3 m, MI WA-221, J. K. Lowry &amp; R. T. Springthorpe, 20 December 1983; 3 specimens, MV J.75812, The Hotspot Reef, 9.3 km west of north end of Flinders Island, South Australia, Australia, 33°40'48"S 134°22'30"E, scuba, 21 m, SA 70, G. C. B. Poore, 20 April 1985; 1 specimen, MV J.75813, The Hotspot Reef, 9.3 km west of north end of Flinders Island, South Australia, Australia, 33°40'30"S 134°22'1"E, scuba, 17 m, SA 62, G. C. B. Poore, 19 April 1985; 1 male, AM P.106340, reef west of groyne, 2 km south of Cape Peron, Western Australia, Australia, 32°16'S 115°41'E, deep channels in limestone reef, sand from pocket in reef, 6 m, MI WA-292, J. K. Lowry, 26 December 1983; 1 male, 3 juveniles, MV J.75814, north-east side of Topgallant Island, Investigator Group, South Australia,Australia,33°43'0"S 134°36'36"E, scuba, 12 m, SA 83, S. Shepherd &amp; G. C. B. Poore, 22 April 1985; 1 female, ovigerous, 4 juveniles, MV J.75815, The Hotspot Reef, 9.3 km west of north end of Flinders Island, South Australia, Australia, 33°40'30"S 134°22'1"E, scuba, 7 m, SA 64, S. Shepherd, 19 April 1985.</p><p>Type locality. Penneshaw, Kangaroo Island, South Australia, Australia, 35°43'S 137°56'E.</p><p>Etymology. Named for the short rostrum of this species. Used as a noun in apposition.</p><p>Description. Male (based on holotype, 2.4 mm, AM P.106325).</p><p>Head. Rostrum short, length 0.2 × head, evenly tapered, apically subacute; lateral cephalic lobe with ventral corner acute, subocular margin weakly recessed, not reaching beyond eye, anteroventral corner subquadrate, ventral margin horizontal, posterior margin vertical.</p><p>Antenna 1 very long, length 0.9 × body length; peduncle without scales; peduncular article 1 subequal to article 3, length 0.9 × peduncular article 3, swollen along posterior margin, posterodistal corner not produced; peduncular article 2 anterodistal corner without distal projection; flagellum 5-articulate; article 1 long. Antenna 2 length equal to antenna 1; flagellum 3-articulate.</p><p>Pereon. Pereonite 1 without lateral keel or sternal keel. Pereonites 2–3 without sternal keel.</p><p>Gnathopod 1 coxa not fused to pereonite 1, length 0.9 × depth, without anteroventral lobe; basis length twice depth; carpus broad, length 1.2 × depth with setose posterior lobe; propodus palm extremely acute, with barbed robust setae. Gnathopod 2 carpochelate; coxa not fused to pereonite 2, length 1.9 × depth, without anteroventral lobe or cusp; basis short, broad, length 1.5 × breadth, without anteroproximal group of long slender setae; carpus short, length 1.3 × breadth, broad, posterior margin without teeth, palm shallowly excavate, anterodistal tooth large, located distal to articulation with propodus, posterodistal tooth well defined, medium length, length 1.4 × width; propodus very broad, slightly curved, length 2.3 × width, with small tooth on posterior margin, posterodistal corner smooth; dactylus, length 0.7 × propodus.</p><p>Pereopod 3 coxa without anteroventral lobe, not fused to pereonite 3, length 1.9 × depth; basis length 1.7 × breadth, with proximal, subquadrate anterodorsal corner, with plumose setal group along anterior margin, without denticles along anterior margin; ischium short, length 1.2 × breadth; merus length 1.2 × breadth; short, without ridges. Pereopod 4 coxa not fused to pereonite 4, with anterior lobe separated from an anteroventral lobe; basis length 1.4 × breadth, without setal group along anterior margin; ischium long, length twice breadth; merus long, length 1.8 × breadth. Pereopod 5 coxa length 1.7 × depth, without patches of small setae, with 1 seta along ventral margin; merus with anterior lobe extending beyond anterior margin of carpus, posterior lobe with 2 plumose setae; propodus with 1 seta along posterior margin; dactylus short, uncinate with 1 accessory hook. Pereopod 6 coxa without setal fringe ventrally, without patches of small setae near margins; basis without patch of small setae near anterior margin; merus, length 1.6 × breadth; dactylus short, uncinate, with 1 accessory hook. Pereopod 7 merus length 1.3 × breadth; dactylus short, uncinate, with 1 accessory hook.</p><p>Pleon. Pleopods 1–3 biramous, decreasing in size. Pleopod 1 inner ramus 4-articulate; outer ramus 3-articulate, article 1 with straight medial margin; Pleopod 2 inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 biramous; peduncle length 1.4 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 4 lateral setae, with large apical robust seta, without smaller slender setae; inner ramus, length 0.8 × outer ramus, without medial and lateral setae, with large apical robust seta. Uropod 2 uniramous, peduncle, length 3.5 × breadth, 4.2 × length of ramus; ramus small with 2 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.5 × breadth; ramus with 2 curved hooks. Telson broader than long, length 0.4 × breadth, cleft to base, each lobe with 13 anteriorly directed recurved spines in 2 rows.</p><p>Female (sexually dimorphic characters). Based on paratype female, 2.7 mm, AM P.106326. Antenna 1 peduncle without scales; flagellum 4-articulate. Antenna 2 flagellum 4-articulate. Pereonite 1 without lateral keel. Pereonite 2–3 without sternal keel. Gnathopod 1 coxa, length equalling depth; basis length 2.3 × depth; carpus length 0.9 × depth with setose posterior lobe. Gnathopod 2 subchelate; coxa length 1.7 × depth; basis, length 1.4 × depth, without medial line of setae; palm extremely acute. Pereopod 5 coxa length 1.4 × depth. Oostegites from gnathopod 2 to pereopod 5.</p><p>Tube. Smooth tube of mud and fine particles with light and dark stripes, often covered by clay-coloured sponge or pale ascidian; may be swollen in the middle; tubes often bound together by the ascidian or the sponge.</p><p>Habitat. Marine, 0.1 – 27 m.</p><p>Remarks. Cerapus brevirostris sp. nov. and C. alquirta are the only Australian species lacking a setal fringe on coxa 6 and with a 4-articulate outer ramus on pleopod 1. Cerapus brevirostris differs from C. alquirta in having antenna 1 and 2 equal in length. The outer ramus of pleopod 1 in C. brevirostris has a straight medial margin whereas all other Australian species have the margin evenly swollen. Cerapus brevirostris is the only Australian species with a tooth on the posterior margin of the propodus of male gnathopod 2 and with antenna 1 very long relative to body length (0.9 × body length).</p><p>Distribution. Sellicks Beach and Kangaroo Island, South Australia to Ningaloo Reef, Western Australia.</p></div>	https://treatment.plazi.org/id/038F87828E40FFB1A75DFD048E04FDD8	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.		Plazi	Berents, Penelope B.	Berents, Penelope B. (2023): New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae). Records of the Australian Museum (Rec. Aust. Mus.) 75 (4): 381-403, DOI: 10.3853/j.2201-4349.75.2023.1879, URL: http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879
038F87828E47FFBCA5CDFDCA88E3F814.text	038F87828E47FFBCA5CDFDCA88E3F814.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cerapus chiltoni Berents 2023	<div><p>Cerapus chiltoni sp. nov.</p><p>urn:lsid:zoobank.org:act:395F0B53-201A-48D1-8309-147C5F42DDAB</p><p>Figs 4–8</p><p>Cerapus flindersi .— Chilton, 1892: 1 – 6, pl. 1.</p><p>Holotype: Male, 4.1 mm, AM P.106341, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=151.26666&amp;materialsCitation.latitude=-33.85" title="Search Plazi for locations around (long 151.26666/lat -33.85)">Port Jackson</a>, New South Wales, Australia, 33°51'S 151°16'E, R. Helms, pre-1892. Paratypes: Female, 3.3 mm, AM P.106345; male, 4.1 mm, AM P.106343; male 2.8 mm, AM P.106344; male, 5.5 mm, AM P.106342; male, 3.3 mm, AM P.106345; data as for holotype. Male, 4.6 mm, AM P.27296, Fly Point, Port Stephens, New South Wales, Australia, 32°43'S 152°9'E, on orange hydroid, 20 m, N. Coleman, 27 November 1977.</p><p>Additional material examined. 5 specimens, AM P.106355, north-west end of South Solitary Island, New South Wales, Australia, 30°12'07"S 153°15'59"E, coral rubble, hand collected on scuba, 14.5 m, NSW 2813, K. B. Atwood, 1 May 2005;&gt;1000 specimens, AM P.106354, Port Jackson, New South Wales, Australia, 33°51'S 151°16'E, K. Sheard.</p><p>Type locality. Port Jackson, New South Wales, Australia, 33°51'S 151°16'E.</p><p>Etymology. Named for Professor Charles Chilton who first examined Australian Museum specimens of this species from Port Jackson and attributed them to Cerapus flindersi Stebbing, 1888 .</p><p>Description. Male (based on holotype, 4.1 mm, AM P.106341).</p><p>Head. Rostrum short, length 0.1 × head, evenly tapered, apically subacute; lateral cephalic lobe with ventral corner rounded, subocular margin deeply recessed, reaching beyond eye, anteroventral corner subquadrate, ventral margin horizontal, posterior margin vertical. Antenna 1 long, length 0.6 × body length; peduncle without scales; peduncular article 1 shorter than article 3, length 0.8 × peduncular article 3, not produced anterodistally and anteromedially, slightly swollen along posterior margin, posterodistal corner not produced; peduncular article 2 anterodistal corner without distal projection; flagellum 7-articulate; article 1 long. Antenna 2 length equal to antenna 1; flagellum 9-articulate.</p><p>Pereon. Pereonite 1 with lateral keel, without sternal keel. Pereonite 2 with sternal keel. Pereonite 3 without sternal keel. Pereonite 5 length 1.9 × depth.</p><p>Gnathopod 1 coxa not fused to pereonite 1, length 1.5 × depth, without anteroventral lobe; basis length 2.2 × depth; carpus broad, length 1.6 × depth with setose posterior lobe; propodus palm extremely acute, robust setae absent. Gnathopod 2 carpochelate; coxa not fused to pereonite 2, length 1.9 × depth, with strongly produced anteroventral lobe or cusp; basis short, broad, length twice breadth, without anteroproximal group of long slender setae; carpus very long, length 1.9 × breadth, slender, posterior margin without teeth, palm deeply excavate, anterodistal tooth extremely produced, located near articulation with propodus, posterodistal tooth well defined, long, length 2.2 × width; propodus slender, strongly curved, length 5.3 × width, without tooth on posterior margin, posterodistal corner smooth, without teeth; dactylus, length 0.5 × propodus.</p><p>Pereopod 3 coxa with narrow anteroventral lobe, not fused to pereonite 3, length 1.7 × depth; basis, length 1.6 × breadth, with proximal rounded anterodorsal corner, with simple setae along anterior margin, without denticles along anterior margin; ischium long, length 1.6 × breadth; merus length 1.2 × breadth; short; without ridges. Pereopod 4 coxa not fused to pereonite 4, with anterior lobe separated from an anteroventral lobe; basis length 1.5 × breadth, with simple setal group midway along anterior margin; ischium long, length 2.3 × breadth; merus long, length 1.3 × breadth. Pereopod 5 coxa length 1.8 × depth, without patches of small setae, with setae along ventral margin few or absent; merus with anterior lobe not extending beyond anterior margin of carpus, posterior lobe with 1 plumose seta; propodus with 1 seta along posterior margin; dactylus short, uncinate with 1 accessory hook. Pereopod 6 coxa with setal fringe ventrally, without patches of small setae near margins; basis without patch of small setae near anterior margin; merus, length 1.9 × breadth; dactylus short, uncinate, with 1 accessory hook. Pereopod 7 coxa without posterodorsal lobe; merus length 2.3 × breadth; dactylus short, uncinate, with 1 accessory hook.</p><p>Pleon. Pleopods 1–3 biramous, decreasing in size. Pleopod 1 inner ramus 7-articulate; outer ramus 3-articulate article 1 evenly swollen. Pleopod 2 inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 biramous; peduncle, length 1.3 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 3 lateral setae, with large apical robust seta, without smaller slender setae; inner ramus, length 0.6 × outer ramus, without medial and 1 lateral seta, with large apical robust seta. Uropod 2 uniramous, peduncle, length 2.1× breadth, 5 × length of ramus; ramus small with 2 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.7 × breadth; ramus with 2 curved hooks. Telson as broad as long, length 1.0 × breadth, cleft to base, each lobe with 7–8 anteriorly directed recurved spines in 2 rows.</p><p>Female (sexually dimorphic characters). Based on paratype female, 3.3 mm, AM P.106345. Antenna 1 peduncle without scales; flagellum 7-articulate. Antenna 2 flagellum 9-articulate. Pereonite 1 without lateral keel. Pereonites 2–3 without sternal keel. Pereonite 5 length 1.9 × depth. Gnathopod 1, coxa length 1.2 × depth; basis length 1.5 × depth; carpus, length equal to depth with setose posterior lobe. Gnathopod 2 subchelate; coxa length 2.7 × depth; basis length 1.7 × depth without medial line of setae; palm extremely acute. Pereopod 5 coxa, length 1.9 × depth. Oostegites from gnathopod 2 to pereopod 5.</p><p>Tube. Composed of fine-grained grey sediment, flared at one end.</p><p>Habitat. Marine, 14.5 – 20 m depth.</p><p>Remarks. The Port Jackson material of C. chiltoni sp. nov. was collected by Richard Helms and deposited in the collections of the Australian Museum. Helms was a collector for the Australian Museum from 1888 but the precise locality and date of these collections is unknown. Specimens collected by Helms were sent to Professor Charles Chilton who published a description of amphipod specimens that were collected in Port Jackson (Chilton, 1892). Chilton illustrated and described the specimens, attributing the material to Cerapus flindersi Stebbing, 1888 . Specimens in ethanol and seven microscope slides prepared by Chilton are held in the Australian Museum collections (4 slides of parts of large male, 1 slide of parts of smaller male, 2 slides of whole females) and are considered to be the slides used for the description and illustrations by Chilton (1892). Labels on the slides confirm that the Chilton’s material was collected by Helms.</p><p>Berents &amp; Lowry (2018) assigned Cerapus flindersi Stebbing, 1888 to the new genus Kapalana and considered Chilton’s specimens to be an undescribed species of Cerapus . The material examined by Chilton is attributed to the new species described herein as Cerapus chiltoni .</p><p>The shape of the male gnathopod 2 changes with body size. The carpus and the propodus become more elongate as the male grows. The length to breadth ratio of the carpus changes from 1.3:1 in small males (up to 3.3 mm) to 1.9:1 in large males (greater than 4.0 mm).The palm changes from shallowly excavate in males less than 3.0 mm to deeply excavate in males larger than 4.0 mm. The posterodistal tooth becomes more elongate and chisel-like in large males (&gt; 4.0 mm). The chisel-like posterodistal tooth is unique to C. chiltoni .</p><p>Distribution. New South Wales: Port Jackson to South Solitary Island.</p></div>	https://treatment.plazi.org/id/038F87828E47FFBCA5CDFDCA88E3F814	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.		Plazi	Berents, Penelope B.	Berents, Penelope B. (2023): New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae). Records of the Australian Museum (Rec. Aust. Mus.) 75 (4): 381-403, DOI: 10.3853/j.2201-4349.75.2023.1879, URL: http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879
038F87828E48FFB9A747FF3F888AF8D1.text	038F87828E48FFB9A747FF3F888AF8D1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cerapus dildilgang Berents 2023	<div><p>Cerapus dildilgang sp. nov.</p><p>urn:lsid:zoobank.org:act:A77CB54F-06C6-4341-88EF-F12E510EA71E</p><p>Figs 9–13</p><p>Holotype: Male, 3.8 mm, AM P.26097, off Sow and Pigs Reef, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=151.26666&amp;materialsCitation.latitude=-33.833332" title="Search Plazi for locations around (long 151.26666/lat -33.833332)">Port Jackson</a>, New South Wales, Australia, 33°50'S 151°16'E, Smith-McIntyre benthic grab, shell and sandy mud, 5 m, J. K. Lowry &amp; A. R. Jones, 30 September 1976. Paratypes: 1 female, ovigerous, 3.2 mm, AM P.106356; 1 male, 3.3 mm, AM P.106357; 1 male, 2.3 mm, AM P.106358; all with same data as holotype. 6 males, 3 females, 4 juveniles, AM P.10659, Store Beach, Port Jackson, New South Wales, Australia, 33°48'48"S 151°17'12"E, sand, detritus, and fine shell fragments, Halodule sp. and other algae, hand dredge on scuba, 3 m, AU 59, J. Just, P. B. Berents &amp; R. T. Springthorpe, 26 September 1984.</p><p>Additional material examined. Many specimens,AM P.106360, same data as holotype; 157 specimens, AM P.106362, 200 m south-east of Croppy Point, Hawkesbury River, New South Wales, Australia, 33°33'S 151°14'E, sandy mud, Smith-McIntyre benthic grab, 12 m, HRS 2-3-2 Feb 84, A. R. Jones &amp; A. Murray, 9 February 1984; many specimens,AM P.106361, just beyond beach flats, off Bagnalls Beach, Port Stephens, New South Wales, Australia, 32°43'17"S 152°7'17"E, 3 m, benthic sled, W.F.Ponder &amp; J. Hall, 25 October 1980; 5 specimens, AM P.106363, Store Beach, Port Jackson, New South Wales, Australia, 33°48'48"S 151°17'12"E, sand, detritus, and fine shell fragments, Halodule sp. and other algae, hand dredge on scuba, 3 m, AU 59, J. Just, P. B. Berents &amp; R. T. Springthorpe, 26 September 1984; 5 specimens, AM P.106364, Quarantine Beach, Port Jackson, New South Wales, Australia, 33°49'S 151°17'E, hand dredge on scuba, 2 m, J. Just, P. B. Berents &amp; P. M. Berents, 1 March 1986; 2 males &amp; 1 female, ovigerous, AM P.73726, Outer Latitude Rock, Forster, New South Wales, Australia, 32°12'39"S 152°34'06"E, sediment from rock face, hand collected on scuba, 16 m, NSW 2154, Australian Museum party, 18 March 2003; 1 male, AM P.106365, north of Moon Island, Swansea Heads, New South Wales, Australia, 33°05'08"S 151°40'25"E, rocky reef with barnacles, turf algae, and shelly sediment, airlift on scuba, 10 m, MI NSW 3458, R. T. Springthorpe, 5 May 2009.</p><p>Type locality. Off Sow and Pigs Reef, Port Jackson, New South Wales, Australia, 33°50'S 151°16'E.</p><p>Etymology. The species epithet means “little prawn” (prawn “dildil”; little “gang”) in the language of the Dharawal people of Port Jackson. Used as a noun in apposition.</p><p>Description. Male (based on holotype, 3.8 mm, AM P.26097).</p><p>Head. Rostrum short, length 0.2 × head, evenly tapered, apically subacute; lateral cephalic lobe with ventral corner rounded, subocular margin deeply recessed, reaching beyond eye, anteroventral corner rounded, ventral margin sloping, posterior margin sloping. Antenna 1 long, length 0.6 × body length; peduncle without scales; peduncular article 1 shorter than article 3, length 0.8 × peduncular article 3, not produced anterodistally and anteromedially, swollen along posterior margin, posterodistal corner not produced; peduncular article 2 anterodistal corner without distal projection; flagellum 4-articulate; article 1 long. Antenna 2 length equal to antenna 1; flagellum 3-articulate.</p><p>Pereon. Pereonite 1 with lateral keel, without sternal keel. Pereonite 5 length 1.5 × depth.</p><p>Gnathopod 1 coxa not fused to pereonite 1, length 1.3 × depth, without anteroventral lobe; basis length twice depth; carpus broad, length 1.5 × depth with setose posterior lobe; propodus palm extremely acute, robust setae present. Gnathopod 2 carpochelate; coxa not fused to pereonite 2, length twice depth, without anteroventral lobe or cusp; basis short, broad, length 1.7 × breadth, without anteroproximal group of long slender setae; carpus very long, length 1.9 × breadth, slender, posterior margin without teeth, palm straight, anterodistal tooth small, located near articulation with propodus, posterodistal tooth poorly defined; propodus slender, curved, length 4.8 × width, without tooth on posterior margin, posterodistal corner smooth, without teeth; dactylus length 0.5 × propodus.</p><p>Pereopod 3 coxa with narrow anteroventral lobe, not fused to pereonite 3, length 1.9 × depth; basis length 1.7 × breadth, anterior margin evenly rounded with simple setae, without denticles along anterior margin; ischium long, length 1.8 × breadth; merus length 1.1 × breadth; short; without ridges. Pereopod 4 coxa not fused to pereonite 4, with anterior lobe separated from an anteroventral lobe; basis length 1.3 × breadth, with simple setal group midway along anterior margin; ischium long, length 2.2 × breadth; merus long, length 1.6 × breadth. Pereopod 5 coxa length 1.5 × depth, without patches of small setae, with setae along ventral margin few or absent; merus with anterior lobe not extending beyond anterior margin of carpus, posterior lobe with 2 plumose setae; propodus with 1 seta along posterior margin; dactylus short, uncinate with 1 accessory hook. Pereopod 6 coxa with setal fringe ventrally, without patches of small setae near margins; basis without patch of small setae near anterior margin; merus length 1.5 × breadth; dactylus short, uncinate, with 1 accessory hook. Pereopod 7 coxa with posterodorsal lobe, without patch of small setae; merus length 1.4 × breadth; dactylus short, uncinate, with 1 accessory hook.</p><p>Pleon. Pleopods 1–3 biramous, decreasing in size. Pleopod 1 inner ramus 7-articulate; outer ramus 4-articulate, article 1 evenly swollen; Pleopod 2 inner ramus reduced, 1-articulate; outer ramus, broad, 3-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 biramous; peduncle, length 1.5 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 5 lateral setae, with large apical robust seta and smaller slender setae; inner ramus, length 0.6 × outer ramus, without medial and with 1 lateral seta, with large apical robust seta. Uropod 2 uniramous, peduncle, length 3.6 × breadth, 5.9 × length of ramus; ramus small with 2 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.3 × breadth; ramus with 2 curved hooks. Telson broader than long, length 0.4 × breadth, cleft to base, each lobe with 12 anteriorly directed recurved spines in 2 rows.</p><p>Female (sexually dimorphic characters). Based on paratype female, 3.1 mm, AM P.106356. Antenna 1 peduncle without scales; flagellum 3-articulate. Antenna 2 flagellum 3-articulate. Pereonite 1 without lateral keel. Pereonite 2–3 without sternal keel. Gnathopod 1 coxa length 1.5 × depth; basis length 2.6 × depth; carpus length 1.2 × depth, with setose posterior lobe. Gnathopod 2 subchelate; coxa length 1.2 × depth; basis length 1.6 × depth, without medial line of setae; palm extremely acute Pereopod 5 coxa length 1.6 × depth. Oostegites from gnathopod 2 to pereopod 5.</p><p>Tube. Fine grained smooth tube with light and dark rings.</p><p>Habitat. Marine, 2 – 16 m.</p><p>Remarks. The shape of gnathopod 2 propodus and carpus in C. dildilgang changes as males grow, with the propodus becoming curved and slender in larger males. The carpus comes more elongate in larger males with the length to breadth ratio increasing from 1.1:1 in males less than 3 mm, 1.2:1 in males up to 3.5 mm and 1.9:1 in the holotype (3.8 mm in length). On the carpus, the anterodistal tooth near the articulation with the propodus becomes more prominent in larger males. In males less than 3 mm in length the tooth is absent, and poorly defined in males up to 3.5 mm. The tooth is small but well defined in the holotype. The palm of gnathopod 2 is straight rather than excavate as in most species of Cerapus .</p><p>Distribution. New South Wales: Port Jackson to Port Stephens.</p></div>	https://treatment.plazi.org/id/038F87828E48FFB9A747FF3F888AF8D1	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.		Plazi	Berents, Penelope B.	Berents, Penelope B. (2023): New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae). Records of the Australian Museum (Rec. Aust. Mus.) 75 (4): 381-403, DOI: 10.3853/j.2201-4349.75.2023.1879, URL: http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879
038F87828E4CFFA6A764FD328AB4FC0A.text	038F87828E4CFFA6A764FD328AB4FC0A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cerapus lowryi Berents 2023	<div><p>Cerapus lowryi sp. nov.</p><p>urn:lsid:zoobank.org:act:A7DA6C97-A751-483E-A82B-3137D838C12D</p><p>Figs 14–18</p><p>Holotype: Male, 7.2 mm, AM P.51212, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=151.38333&amp;materialsCitation.latitude=-33.866665" title="Search Plazi for locations around (long 151.38333/lat -33.866665)">east of Port Jackson</a>, New South Wales, Australia, 33°52'S 151°23'E, mud, epibenthic sled, 80 m, FRV Kapala, K 80-20-11, R. T. Springthorpe, 11 December 1980. Paratypes: 1 male, 4.9 mm, AM P.106369; 1 male, 3.8 mm, AM P.106370; 1 male 6.1 mm, AM P.106371; 1 female, 5.1 mm; AM P.51213; all same data as holotype. 1 male, 6.5 mm, AM P.18116; 1 male 5.4 mm, AM P.106366; 2 females, AM P.106367, Bass Strait, Victoria, Australia, 39°S 148°30'E, 126 m, Esso-Gippsland st. 19, C. Phipps, 7 – 9 May 1969.</p><p>Additional material examined. 15 specimens, AM P.106373; 1 male AM P.106372; same data as holotype. 1 male, AM P.2525, 3 – 4 km off Botany Bay, New South Wales, Australia, 34°5'S 151°15'E, mud, 91 – 95 m, HMCS “Thetis”, st. 37, E. R. Waite, 11 March 1898; 1 male, 1 female, AM P.106368, 9 – 12 km off Cape Three Points,New South Wales,Australia, 33°32'S 151°32'30"E, sticky mud &amp; shell, 75 – 91 m, HMCS “Thetis”, st.13, E. R. Waite, 25 February 1898; 1 male,AM P.106374, southeast of Broken Bay, New South Wales,Australia, 33°36'S 151°30'E, trawl, 71 – 75 m, FRV “ Kapala ”, 10 February 1986, K86-01-02; 1 male,AM P.106375, east of Port Jackson, New South Wales,Australia, 33°50'S 151°32'E, trawl, 132 – 135 m, FRV “ Kapala ”, K85-21-01, J. K. Lowry &amp; R.T.Springthorpe, 18 December 1985; 6 specimens, AM P.106376, east of Newcastle, New South Wales, Australia, 32°53'S 152°35'E, bottom tow with plankton net, 146 – 165 m, FRV “ Kapala ”, K85-12-23, 15 August 1985; 1 male, AM P.22508, east of Malabar, New South Wales,Australia, 33°58'S 151°16'E, 32 m, Australian Museum Shelf Benthic Survey, 1973; 1 female,AM P.22507, 1 km east of Magic Point, New South Wales,Australia, 33°57'40"S 151°16'10"E, 31 m, Australian Museum Shelf Benthic Survey, Shipek Collection pt. D, 17 May 1972; 1 female ovigerous, 3.4 mm, AM P.22502, east of North Head, New South Wales, Australia, 33°49'S 151°18'E, on sponge Polymastia craticia Hallman, 1912, 26 m, Australian Shelf Benthic Survey, transect 7, 26 February 1974; many specimens, MV J.75818, 85 km north-east of North Point, Flinders Island, eastern Bass Strait, Tasmania,Australia, 39°02'24"S 148°30'36"E, dredge, 121 m, stn 169D, R. S. Wilson, 15 November 1981; 7 specimens, MV J.75817, 45 km north-east of North Point, Flinders Island, eastern Bass Strait, Tasmania, Australia, 39°31'48"S 148°24'25"E, Smith-McIntyre grab, 40 m, BSS 168G, R. S. Wilson, 15 November 1981; many specimens, MV J.75816, 85 km north-east of North Point, Flinders Island, eastern Bass Strait, Tasmania, Australia, 39°02'24"S 148°30'36"E, Smith-McIntyre grab, 121 m, stn 169G, R. S. Wilson, 15 November 1981.</p><p>Type locality. East of Port Jackson, New South Wales, Australia, 33°52'S 151°23'E.</p><p>Etymology. Named for Dr Jim Lowry, mentor, colleague, and friend, in recognition of his immense contribution to the study of the Amphipoda .</p><p>Description. Male (based on holotype, 7.2 mm, AM P.51212).</p><p>Head. Rostrum long, length 0.3 × head, evenly tapered, apically acute; lateral cephalic lobe with ventral corner acute, subocular margin deeply recessed, reaching beyond eye, anteroventral corner subquadrate, ventral margin horizontal, posterior margin sloping. Antenna 1 long, length 0.5 × body length; peduncle with scales; peduncular article 1 shorter than article 3, length 0.7 × peduncular article 3 not produced anterodistally and anteromedially, with strong sub-quadrate projection along posterior margin, posterodistal corner not produced; peduncular article 2 anterodistal corner without distal projection; flagellum 5-articulate; article 1 short. Antenna 2 length 0.7 × antenna 1; flagellum 5-articulate.</p><p>Pereon. Pereonite 1 with lateral keel, without sternal keel. Pereonite 2 with sternal keel. Pereonite 3 without sternal keel. Pereonite 5 length 1.6 × depth.</p><p>Gnathopod 1 coxa not fused to pereonite 1, length 1.9 × depth, without anteroventral lobe; basis length 2.1 × depth; carpus very broad, length 1.6 × depth with setose posterior lobe; propodus palm extremely acute, robust setae absent. Gnathopod 2 carpochelate; coxa not fused to pereonite 2, length 2.6 × depth, with a strongly produced anteroventral lobe; basis short, broad, length 1.4 × breadth, without anteroproximal group of long slender setae; carpus long, length 1.6 × breadth, broad, posterior margin with small spine, palm deeply excavate, anterodistal tooth extremely produced, located near articulation with propodus, posterodistal tooth well defined, medium length, length 1.4 × width; propodus slender, strongly curved, length 5.6 × width, without tooth on posterior margin, posterodistal corner smooth, without teeth; dactylus, length 0.5 × propodus.</p><p>Pereopod 3 coxa with narrow anteroventral lobe, not fused to pereonite 3, length 1.9 × depth; basis, length 1.6 × breadth, evenly rounded, with plumose setal group and simple setae along anterior margin, with patches of denticles along medial surface; ischium long, length 2.5 × breadth; merus length 1.1 × breadth, short; without ridges. Pereopod 4 coxa not fused to pereonite 4, with anterior lobe separated from several small anteroventral lobes; basis length 1.6 × breadth, with plumose setae along entire anterior margin; ischium long, length 3.1 × breadth; merus very long, length 2.2 × breadth. Pereopod 5 coxa, length 1.5 × depth, without patches of small setae, with setae along ventral margin; merus with anterior lobe not extending beyond anterior margin of carpus, posterior lobe with 1 plumose seta; propodus with 2 setae along posterior margin; dactylus short, uncinate with 1 accessory hook.</p><p>Pereopod 6 coxa with setal fringe ventrally, without patches of small setae near margins; basis with patch of small setae near anterior margin; merus, length 1.8 × breadth; dactylus short, uncinate, with 1 accessory hook. Pereopod 7 coxa without posterodorsal lobe, with patch of small setae; merus length 2.3 × breadth; dactylus, short, uncinate, with 1 accessory hook.</p><p>Pleon. Pleopods 1–3 biramous, decreasing in size. Pleopod 1 inner ramus 7-articulate; outer ramus 5-articulate, article 1 evenly swollen; Pleopod 2 inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 biramous; peduncle, length 1.4 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 10 lateral setae, with large apical robust seta, without smaller slender setae; inner ramus, length 0.8 × outer ramus, medial setae absent, with 8 lateral setae, with large apical robust seta. Uropod 2 uniramous, peduncle, length 3.2 × breadth, 4.1 × length of ramus; ramus small with 6 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.9 × breadth; ramus with 2 curved hooks. Telson broader than long, length 0.4 × breadth, cleft to base, each lobe with 28–29 anteriorly directed recurved spines in 2 rows.</p><p>Female (sexually dimorphic characters). Based on paratype female, 5.1 mm, AM P.51213. Antenna 1 peduncle without scales; flagellum 2-articulate. Antenna 2 flagellum 2-articulate. Pereonite 1 without lateral keel. Pereonites 1, 2, 3 without sternal keel. Pereonite 5 length 1.7 × depth. Gnathopod 1 coxa, length 1.7 × depth; basis length 1.9 × depth; carpus, length equal to depth with setose posterior lobe. Gnathopod 2 subchelate; coxa length 1.9 × depth with short anteroventral lobe; basis length 1.1 × depth, with medial line of setae; palm extremely acute. Pereopod 5 coxa, length twice depth. Oostegites from gnathopod 2 to pereopod 5.</p><p>Tube. Long slender tube composed of fine grey sediment and detritus.</p><p>Habitat. Marine, 26–165 m.</p><p>Remarks. Cerapus lowryi and C. chiltoni are the only Australian species of Cerapus with a strongly produced anteroventral lobe on coxa 2. In C. lowryi the lobe becomes more produced in mature males. Cerapus lowryi differs from C. chiltoni in having a long rostrum and in the shape of the palm of gnathopod 2, which is deeply excavate in both, but narrow in C. chiltoni and wide in C. lowryi with the posterodistal tooth long in C. chiltoni and medium length in C. lowryi . The second gnathopod of C. lowryi also changes as males mature. The propodus becomes more curved and elongate in males greater than 7 mm in length. The carpus also becomes elongate with the ratio of length to width changing from 1:1.3 in males 3 mm to 6 mm in length, to 1:1.6 in males greater than 7 mm in length. Cerapus lowryi is the only Australian species with a very broad lobe on the carpus of gnathopod 1 in the male. Pereopod 3 is dimorphic in C. lowryi with all articles except the ischium bearing more setae in the female than the male. The basis of pereopod 7 has a patch of setae, which is unique to C. lowryi and C. yuyatalay .</p><p>Distribution. Bass Strait, Tasmania to east of Cape Three Points, New South Wales.</p></div>	https://treatment.plazi.org/id/038F87828E4CFFA6A764FD328AB4FC0A	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.		Plazi	Berents, Penelope B.	Berents, Penelope B. (2023): New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae). Records of the Australian Museum (Rec. Aust. Mus.) 75 (4): 381-403, DOI: 10.3853/j.2201-4349.75.2023.1879, URL: http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879
038F87828E50FFA1A6ADFBBF89E5FA1A.text	038F87828E50FFA1A6ADFBBF89E5FA1A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cerapus moonamoona Berents 2023	<div><p>Cerapus moonamoona sp. nov.</p><p>urn:lsid:zoobank.org:act:1D29E8FB-BF85-4DE8-BF77-BFC11132031C</p><p>Figs 19–20</p><p>Holotype: Male, 5.0 mm, AM P.106377, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=150.68666&amp;materialsCitation.latitude=-35.048332" title="Search Plazi for locations around (long 150.68666/lat -35.048332)">off Moona Moona Creek</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=150.68666&amp;materialsCitation.latitude=-35.048332" title="Search Plazi for locations around (long 150.68666/lat -35.048332)">Jervis Bay</a>, New South Wales, Australia, 35°02'54"S 150°41'12"E, airlift on scuba, 8 m, P. B. Berents, 17 November 1981. Paratypes: 1 female, ovigerous, 5.7 mm, AM P.106378, same data as holotype; 1 male, 3.7 mm, AM P.26872, north-east Botany Bay, New South Wales, Australia, 33°58'39"S 151°12'21"E, sandy mud, 7.5 m, State Pollution Control Commission, SPCC Stn. 29, 7 December 1976; 1 male, 4.2 mm, AM P.26875, east Botany Bay, New South Wales, Australia, 34°00'S 151°12'E, 11.6 m, State Pollution Control Commission, SPCC Stn.74, 27 January 1977; 1 male, 4.8 mm, AM P.106380, 1 male 4.5 mm, AM P.106381, off Moona Moona Creek, Jervis Bay, New South Wales, Australia, 35°03'S 150°40'E, silty sand with fine shell fragments, hand dredge on scuba, AU 76, J. Just, P. B. Berents &amp; R. T. Springthorpe, 18 November 1984.</p><p>Additional material examined. 5 females, AM P.106379, same data as holotype; 1 female, 6 juveniles, AM P.106382, off Moona Moona Creek, Jervis Bay, New South Wales, Australia, 35°03'S 150°40'E, silty sand with fine shell fragments, hand dredge on scuba, AU 76, J. Just, P. B. Berents &amp; R. T. Springthorpe, 18 November 1984.</p><p>Type locality. Off Moona Moona Creek, Jervis Bay, New South Wales, Australia, 35°2'54"S 150°41'12"E.</p><p>Etymology. Named for the type locality. Used as a noun in apposition.</p><p>Description. Male (based on holotype, 5.0 mm, AM P.106377).</p><p>Head. Rostrum short, length 0.2 × head, evenly tapered, apically subacute; lateral cephalic lobe with ventral corner subacute, subocular margin deeply recessed, reaching beyond eye, anteroventral corner acute, ventral margin horizontal, posterior margin vertical. Antenna 1 long, length 0.5 × body length; peduncle without scales; peduncular article 1 longer than article 3, length 1.3 × peduncular article 3, slightly swollen, posterodistal corner not produced; peduncular article 2 anterodistal corner without distal projection; flagellum 5-articulate; article 1 long. Antenna 2 1.3 × length antenna 1; flagellum 5-articulate.</p><p>Pereon. Pereonite 1 without lateral keel, without sternal keel. Pereonite 2 with sternal keel. Pereonite 3 without sternal keel.</p><p>Gnathopod 1 coxa not fused to pereonite 1, length 1.4 × depth, without anteroventral lobe; basis length 1.7 × depth; carpus broad, length 1.3 × depth with setose posterior lobe; propodus palm extremely acute, with barbed robust setae. Gnathopod 2 carpochelate; coxa not fused to pereonite 2, length 1.7 × depth, without anteroventral lobe or cusp; basis short, broad, length 1.6 × breadth, without anteroproximal group of long slender setae; carpus long, length 1.6 × breadth, broad, palm shallowly excavate, with 2 apical robust setae, anterodistal tooth tiny, located near articulation with propodus, posterodistal tooth long, well defined, length 1.6 × width; propodus slender, curved, length 5.4 × width, without tooth on posterior margin, posterodistal corner smooth, without teeth; dactylus length 0.4 × propodus.</p><p>Pereopod 3 coxa with broad anteroventral lobe, not fused to pereonite 3, length 2.7 × depth; basis, length 1.8 × breadth, with proximal, subquadrate anterodorsal corner, with simple setae along anterior margin, without denticles along anterior margin; ischium long, length 1.9 × breadth; merus length 1.1 × breadth, short, with ridges. Pereopod 4 coxa with anteroventral lobe, not fused to pereonite 4, length 2.2 × depth; basis length 1.3 × breadth, with simple setal group midway along anterior margin; ischium long, length 2.3 × breadth; merus long, length 1.3 × breadth. Pereopod 5 coxa, length 1.5 × depth, without patches of small setae, with setae along ventral margin few or absent; merus with anterior lobe extending beyond anterior margin of carpus, posterior lobe with 3 plumose setae; propodus with 2 setae along posterior margin; dactylus short, uncinate with 1 accessory hook.</p><p>Pereopod 6 coxa with setal fringe ventrally, without patches of small setae near margins; basis without patch of small setae near anterior margin; merus length 1.7 × breadth; dactylus short, uncinate, with 1 accessory hook. Pereopod 7 coxa with posterodorsal lobe, without patch of small setae; merus length 1.6 × breadth; dactylus short, uncinate, with 1 accessory hook,</p><p>Pleon. Pleopods 1–3 biramous, decreasing in size. Pleopod 1 inner ramus 8-articulate; outer ramus 3-articulate, article 1 evenly swollen; Pleopod 2 inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 biramous; peduncle, length 1.5 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 6 lateral setae, with large apical robust seta, without smaller slender setae; inner ramus, length 0.7 × outer ramus, with 7 medial and no lateral setae, with large apical robust seta. Uropod 2 uniramous, peduncle, length 2.5 × breadth, 4.2 × length of ramus; ramus small with 2 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.4 × breadth; ramus with 2 curved hooks. Telson length 0.8 × breadth, cleft to base, each lobe with 11 or 12 anteriorly directed recurved spines in 2 rows.</p><p>Female (sexually dimorphic characters). Based on paratype female, 5.7 mm, AM P.106378. Antenna 1 peduncle without scales; flagellum 4-articulate. Antenna 2 flagellum 2-articulate. Pereonite 1 without lateral keel. Pereonite 2–3 without sternal keel. Gnathopod 1, coxa, length 1.4 × depth; basis, length 1.7 × depth; carpus, length 1.3 × depth with setose posterior lobe. Gnathopod 2 subchelate; coxa, length 1.7 × depth; basis, length 1.8 × depth, without medial line of setae; palm extremely acute. Pereopod 5 coxa, length 1.1 × depth. Oostegites from gnathopod 2 to pereopod 5.</p><p>Tube. Composed of fine sediment.</p><p>Habitat. Marine, 7 – 12 m.</p><p>Remarks. Cerapus moonamoona is the only Australian species with peduncular article 1 longer than peduncular article 3 on antenna 1. Cerapus moonamoona and C. alquirta are the only Australian species with the male second antenna 2 longer than antenna 1 and both species have a sternal keel on pereonite 2. Cerapus moonamoona differs from C. alquirta in having 11 or 12 recurved spines on the telson whereas C. alquirta has 8 recurved spines on the telson; C. alquirta lacks a setal fringe on coxa 6; the posterior margin of the carpus and propodus of female gnathopod 2 is more densely setose in C. moonamoona and male coxa 5 is twice as long as wide in C. alquirta compared with 1.5 times longer than wide in C. moonamoona . The tube of C. alquirta is broader at one end and the tube of C. moonamoona is straight.</p><p>The male gnathopod 2 of C. moonamoona changes in shape as the male matures. The propodus is curved and slender in males longer than 4.5 mm. The posterodistal tooth of the carpus of gnathopod 2 becomes longer and more strongly defined in males of 5.0 mm. The carpus of gnathopod 2 is more elongate in mature males with the ratio of length to width 1:1.2 – 1:1.3 in males of 3.7 – 4.5 mm and 1:1.6 in males of 5.0 mm. Mature males have 2 apical robust setae on the palm, which is unique to C. moonamoona .</p><p>Distribution. New South Wales: Botany Bay and Jervis Bay.</p></div>	https://treatment.plazi.org/id/038F87828E50FFA1A6ADFBBF89E5FA1A	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.		Plazi	Berents, Penelope B.	Berents, Penelope B. (2023): New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae). Records of the Australian Museum (Rec. Aust. Mus.) 75 (4): 381-403, DOI: 10.3853/j.2201-4349.75.2023.1879, URL: http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879
