North-eastern Atlantic Amphipoda: Aoridae

R. King & A.A. Myers

Chevreuxius grandimanus Bonnier, 1896: 663�665, pl. 40, fig. 3. --Barnard & Karaman, 1991:182�183.

Type material. Unknown.

Type locality. Bay of Biscay.

Description. Based on Bonnier, 1896: 663�665, Pl. 40, fig. 3.

Head. Rostrum absent or vestigial; Lateral cephalic lobes apically round, anteroventral margin moderately excavate, scarcely recessed. Antenna 1 flagellum with 20 or less articles; accessory flagellum present and with one long and one rudimentary article. Antenna 2 with few long setae. Maxilla 1 inner plate with 1 long pectinate apical seta. Maxilliped basis without strong flange on anterior margin. Mandible, palp article 3 longer than 2, posterior margin straight or weakly falcate.

Peraeon. Gnathopod 1 enlarged in males only; basis robust, half or more as broad as long, without a spine, anterior margin without stridulating ridges, posterodistal margin with setae sparse or absent, anterodistal margin with flange weak or absent, with a weak distomedial lobe or absent; ischium anterior margin without flange, posterior margin with setae sparse or absent; merus not greatly elongated, fused along its entire length with carpus, posterior margin with sparse setae or setae absent, without posterodistal spine; carpus twice length of propodus, anterior margin without stridulating ridges, with setae sparse or absent, anterior surface with no spine, without an oblique row of long setae on medial face, posterior margin with stout spine or spines, two spines, proximal the larger; propodus shorter than carpus, anterior margin weakly to moderately setiferous, posterior margin sinuous or irregular with proximal lobe, palm present, palm delimited from posterior margin, margin forming a broad excavate sinus, palm defined by strong posterodistal spine, without spine near base of dactylus; dactylus more than half length of propodus, significantly overlapping palm. Gnathopod 2 subchelate; basis anterodistal margin without flange, posterodistal margin without robust setae; with few setae along length of basis; carpus longer than propodus, anterior margin not lobate, moderately to sparsely setiferous; propodus moderately to sparsely setose, without robust seta or spine defining palm. Pereopod 6 basis not or weakly produced posterodistally. Pereopod 7 significantly less than 125% length of pereopod 6.

Pleon. Uropod 1 biramous, rami rami subequal, peduncle much longer than broad. Uropod 2 peduncle with distoventral interramal spine. Uropod 3 uniramous, inner ramus subequal with length of peduncle.

Habitat. Unknown.

Depth zones. Continental slope.

Distribution. Bay of Biscay.

Cite this publication as: 'King, R. & A.A. Myers (2001 onwards). North-eastern Atlantic Amphipoda: Aoridae. Version 1: 1 September 2001. https://crustacea.net/'. Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993, 1995, 2000) should also be cited (see References).

Index