Family CEINIDAE J.L. Barnard, 1972

Ceina wannape

© Copyright from Barnard 1972: fig. 10.

Museums

Regional Maps

• Ceinidae Barnard, J.L. 1972. Gammaridean Amphipoda of Australia, Part I. Smithsonian Contributions to Zoology 103: i-vi 1-333.

Introduction

In this study the Ceinidae retain all the genera of the Ceininae, but for pragmatic reasons genera prevously considered in the Chiltoniinae are placed in the Hyalidae (Lazo-Wasem & Gable 2001). Bulycheva (1957), Bousfield (1983, 1996) and Zeidler (1991) would place these genera in the Hyalellidae. A dichotomous key to these species is presented in Bradbury & Williams (1999).

The Ceinidae is a small, talitridan family of three genera known from southern South America, New Zealand, Australia and the southern Philippines. In Australian waters only two species, from the Great Barrier Reef and south-western Western Australia, are currently known. Nothing is known about their biology.

Diagnosis

Head as long as deep or deeper than long; anteroventral margin weakly or moderately recessed and shallowly or moderately excavate; anteroventral corner rounded or subquadrate; rostrum short or absent; eyes round or ovoid. Body laterally compressed; with deep sensory pits and dorsally carinate. Antenna 1 shorter than, subequal to, or longer than antenna 2; peduncular article 1 longer than article 2; article 2 subequal to, or longer than article 3; article 3 shorter than article 1; accessory flagellum absent; primary flagellum 5- or more articulate; callynophore absent. Antenna 2 short; flagellum shorter than, as long as or longer than peduncle; less than or more than 5-articulate. Mandible incisor dentate; lacinia mobilis present on both sides; molar fully or weakly triturating or spike-like; palp absent. Maxilla 1 inner plate weakly setose apically; palp large, reduced or absent, 1-articulate. Maxilliped inner plates well developed; outer plates large or small. Coxae 1–4 overlapping. Gnathopod 1 not sexually dimorphic; smaller (or weaker) than or subequal to gnathopod 2; subchelate; coxa vestigial, hidden or partially hidden by coxa 2 or subequal to coxa 2; carpus shorter than or subequal to propodus. Gnathopod 2 sexually dimorphic or not; subchelate; coxa subequal to but not hidden by coxa 3; ischium short or long; carpus short or long, shorter or longer than propodus. Pereopods some, all or none prehensile; 3–4 not glandular. Pereopod 3 coxa longer than broad; carpus shorter than or subequal to propodus, not produced. Pereopod 4 coxa larger than coxa 3, with well developed posteroventral lobe; carpus shorter than or subequal to propodus, not produced. Pereopod 5 shorter than pereopod 6; coxa smaller than coxa 4, with ventrally produced posterior lobe, with posterodorsal lobe or without posterior lobe; basis expanded, subrectangular, subquadrate or subovate, with or without posteroventral lobe; carpus weakly expanded; dactylus with a few subterminal setae. Pereopod 6 shorter than or subequal to pereopod 7; basis expanded; dactylus with a few subterminal setae or without setae. Pereopod 7 longer than pereopod 5; basis expanded or slightly expanded, subovate. Pleonites 1–3 each with or without dorsal carina; each with dense patches of short dorsal setae. Urosomite 1 much longer than urosomite 2; urosomite 1 carinate or urosomites not carinate or urosomite 3 carinate. Uropods 1–2 apices of rami with or without robust setae. Uropod 3 peduncle short; rami absent. Telson laminar or weakly thickened dorsoventrally; moderately or weakly cleft or entire; broader than long; dorsal and apical robust setae absent.

General References

Barnard, J.L. 1972. Gammaridean Amphipoda of Australia, Part I. Smithsonian Contributions to Zoology 103: i-vi 1-333

Barnard, J.L. & Karaman, G.S. 1991. The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement 13: 1-866

Bousfield, E.L. 1983. An updated phyletic classification and paleohistory of the Amphipoda. pp. 257-276 in Schram, F.R. (ed.). Crustacean Phylogeny. Rotterdam : A.A. Balkema.

Bousfield, E.L. 1996. A contribution to the reclassification of neotropical freshwater hyalellid amphipods (Crustacea: Gammaridea, Talitroidea). Bollettino del Museo Civico di Storia Naturale di Verona 20: 175-224

Bradbury, J.H. & Williams, W.D. 1999. Key to and checklist of the inland aquatic amphipods of Australia. Technical Reports of the Australian Museum 14: 1-21

Bulycheva, A.I. 1957. [Beach-fleas of the seas of the USSR and adjacent waters (Amphipoda – Talitroidea)]. Akademii Nauk SSSR Zoologicheskogo Instituta Opredeliteli po Faune SSSR 65: 1-185 [in Russian]

Lazo-Wasem, E.A. & Gable, M.F. 2001. A revision of Parhyalella Kunkel (Crustacea: Amphipoda: Gammaridea). Bulletin of the Peabody Museum of Natural History 46: 1-80

Smith, M.J. & Williams, W.D. 1983. Reproduction cycles in some freshwater amphipods in southern Australia. pp. 183-194 in Lowry, J.K. (ed.). Papers from the Conference on the Biology and Evolution of Crustacea. Memoirs of the Australian Museum 18: 1-218

Zeidler, W. 1988. A redescription of Afrochiltonia capensis (K.H. Barnard, 1916) with a review of the genera of the family Ceinidae (Crustacea, Amphipoda). Annals of the South African Museum 95(5): 105-119

Zeidler, W. 1991. A new genus and species of phreatic amphipod (Crustacea: Amphipoda) belonging in the "chiltonia" genera group, from Dalhousie Springs, South Australia. Transactions of the Royal Society of South Australia 115(4): 177-187

History of changes