Mediterranean Amphipoda: Aoridae

R. King & A.A. Myers

Lembos sp. Ledoyer, 1968: 208, figs. 6�7.

Lembos rubromaculatus Ledoyer, 1973: 883, fig. 3. --Myers, 1974c: 31�41, figs. 21�26. --Myers, 1982a: 119�122, fig. 79.

Autonoe rubromaculatus. --Myers, 1982a: 819.

Type material. Unknown.

Type locality. Marseille.

Description. Based on Myers, 1982a: 119�122, fig. 79; Myers, 1974c: 31�41, figs. 21�26.

Head. Rostrum absent or vestigial; Lateral cephalic lobes apically truncate, anteroventral margin shallowly 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. Labium with fine setae and stout setae. Maxilla 1 inner plate without setae. Maxilliped basis without strong flange on anterior margin. Mandible, palp article 3 shorter than 2 or subequal to 2, posterior margin straight or weakly falcate, mandible palp posterior margin setae of more than two distinct lengths.

Peraeon. Sternal spines absent. Gnathopod 1 enlarged in males only; coxa distinctly produced anterodistally, sub-acute; basis robust, half or more as broad as long, without a spine, anterior margin without stridulating ridges, posterodistal margin with brush of long setae, anterodistal margin with flange weak or absent, with a weak distomedial lobe or absent; ischium anterior margin without flange, posterior margin with dense rows of setae; merus not greatly elongated, fused along its entire length with carpus, posterior margin with dense rows of setae, without posterodistal spine; carpus subequal in length with propodus, anterior margin without stridulating ridges, with long dense setae, anterior surface with no spine, without an oblique row of long setae on medial face, posterior margin without spines; propodus subequal in length to carpus, anterior margin weakly to moderately setiferous, posterior margin straight or evenly convex, palm present, palm delimited from posterior margin, margin forming a narrow sinus, palm defined by strong posterodistal spine, with robust seta defining palm, without spine near base of dactylus; dactylus less than half length of propodus, fitting palm. Gnathopod 2 subchelate; basis anterodistal margin without flange, posterodistal margin without robust setae; with long setae along entire length of basis; carpus longer than propodus, anterior margin not lobate, densely setose; propodus densely setose, palm with robust seta(e) defining palm. Pereopod 6 basis not or weakly produced posterodistally. Pereopod 7 significantly less than 125% length of pereopod 6.

Pleon. Epimeron 3 posterodistal margin rounded. Uropod 1 biramous, rami rami subequal, peduncle much longer than broad, distoventral interramal spine shorter than peduncle. Uropod 2 peduncle without distoventral interramal spine or with vestigial spine. Uropod 3 biramous, inner ramus shorter than outer ramus, inner ramus subequal with length of peduncle. Telson with distal fine setae and robust setae.

Habitat. Infralittoral.

Depth zones. Littoral, or Continental shelf (30�45m).

Distribution. Mediterranean.

Peraeon. Gnathopod 1 basis slender, much less than half as broad as long, posterodistal margin with setae sparse or absent; posterior margin with setae sparse or absent; posterior margin with sparse setae or setae absent; carpus two thirds length of propodus, with setae sparse or absent; propodus longer than carpus, margin entire, palm defined by subquadrate corner or defined by rounded or oblique corner; dactylus about half length of propodus, significantly overlapping palm. Gnathopod 2 carpus subequal with or shorter than propodus, moderately to sparsely setiferous; propodus moderately to sparsely setose.

Cite this publication as: 'King, R. & A.A. Myers (2001 onwards). Mediterranean 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