dcsimg

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Ceina wannape

DIAGNOSIS (of male). — Antenna 1 stout, long, bearing about 11 flagellar articles; antenna 2 very thin, long, flagellum bearing about 11 articles; article 1 of maxillipedal palp broadly expanded laterally as wing; gnathopods 1-2 extraordinarily thin, similar to each other in size and shape, article 6 shorter than 5, article 3 elongate on gnathopod 2, palm oblique, rounded, medial surfaces of articles 5-6 bearing numerous simple setal-spines, coxa 1 very small, subrectangular, anteriorly truncate, partially hidden by coxa 2, latter narrow at base, expanding at middle, coxa 3 evenly quadrate, coxa 4 also evenly quadriform except for oblique posterior margin and posterodorsal excavation, posterior tooth softly rounded; pereopods 3-5 small in comparison to C. egregia (Chilton) and uropods 1-3 elongate; pereonite 1 with gross dorsal hump, pleonites 1-2 with large dorsal humps, pleonite 3 with smaller angular hump.

DESCRIPTION. — Antenna 1 with numerous aethetascs; eyes red in formaldehyde; head, body, coxae, second articles of pereopods 3-5 covered with scattered pits bearing setal-trigger, pits widening interiorly and bearing horizontal hemiseptum, cuticle between pits bearing numerous fuzzy buttons about size of pits, and remaining surface between pits and buttons very minutely punctate or tuberculate (extremely dim under oil immersion); palp of maxilla 1 absent or denoted by extremely small notch, outer plate with 9 spines; inner ramus of uropod 2 lacking spines.

HOLOTYPE. — WAM, male, 7.5 mm. Unique.

TYPE-LOCALITY. — JLB Australia 14, inside Forsythe Bluff, 12 miles west of Albany, Western Australia, intertidal, wash of dense algae on heavily wave-splashed smooth rocks, 1 October 1968.

RELATIONSHIP. — This species differs from the New Zealand Ceina egregia in the following: the larger hump of pereonite 1, the smaller pereopods 3-5, the longer uropods 1-3, the larger antenna 1, the thinner antenna 2, the small coxa 1, the more regularly quadriform coxae 3-4, the wing on the maxillipedal palp, and the completely different gnathopods, the spines of which are simple and not prickled as in C. egregia. The New Zealand species has an enormous chelate gnathopod 2 in the male, unlike C. wannape.

Ceina carinata (Pirlot, 1938) from Indonesia has strongly developed lateral cephalic lobes, no maxillipedal wing, a broad, untapering coxa 2, very broad article 4 on pereopods 3-5, angular processes on pereonite 1 and pleonite 2, and coxa 1 projects anteriorly far more than in C. wannape.

Ceina platei Schellenberg (1953) from Juan Fernandez, has well-developed humps throughout the pereon and a large coxa 1.

MATERIAL. — The holotype.

DISTRIBUTION. — Southwestern Australia, intertidal.
license
cc-by-nc-sa-3.0
bibliographic citation
Barnard, J. L. and Drummond, M. M. 1978. "Gammaridean Amphipoda of Australia, Part III. The Phoxocephalidae." Smithsonian Contributions to Zoology. 1-551. https://doi.org/10.5479/si.00810282.103

Depth range

provided by World Register of Marine Species
Littoral (0 to 30 m), intertidal.
license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Jim Lowry [email]

Habitat

provided by World Register of Marine Species
Marine, intertidal wash of dense algae on exposed smooth rocks.
license
cc-by-4.0
copyright
WoRMS Editorial Board
contributor
Jim Lowry [email]