Mediterranean Amphipoda: Aoridae

R. King & A.A. Myers

Lembos angularis Ledoyer, 1970: 18, fig. 5. --Myers, 1974c: 19, figs. 8-14. --Myers, 1982a: 118, fig. 77.

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

Type material. Unknown.

Type locality. East Corsica.

Description. From Myers, 1982a: 118, fig. 77; Myers, 1974c: 19, figs. 8-14.

Head. Rostrum absent or vestigial; Lateral cephalic lobes apically round, anteroventral margin moderately excavate, scarcely recessed. Antenna 1 flagellum with 21 or more articles; accessory flagellum present and multiarticulate. Antenna 2 with few long setae. Labium with fine setae only. Maxilla 1 inner plate with 1 long pectinate apical seta. Maxilliped basis without strong flange on anterior margin. Mandible, palp article 3 subequal to 2, posterior margin straight or weakly falcate, mandible palp posterior margin setae of more than two distinct lengths.

Peraeon. Sternal spines present, on other pereonites, apically acute. Gnathopod 1 enlarged in males only; coxa distinctly produced anterodistally, acute; 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 strong flange, 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 two thirds 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 without spines; propodus longer than carpus, anterior margin weakly to moderately setiferous, posterior margin straight or evenly convex, palm present, palm delimited from posterior margin, margin entire, palm defined by subquadrate corner, with robust seta defining palm, 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 subequal with or shorter than propodus, anterior margin not lobate, moderately to sparsely setiferous; propodus moderately to sparsely setose, palm with robust seta(e) defining palm. Pereopod 6 basis not or weakly produced posterodistally.

Pleon. Epimeron 3 posterodistal margin rounded. Uropod 1 biramous, rami rami subequal, peduncle much longer than broad, distoventral interramal spine about as long as peduncle. Uropod 2 peduncle with distoventral interramal spine. Uropod 3 biramous, outer ramus shorter than inner, inner ramus twice length of peduncle. Telson with distal fine setae and robust setae.

Habitat. On soft mud, sandy mud, and fine sand.

Depth zones. Continental shelf (150-360m).

Distribution. Mediterranean.

Peraeon. Sternal spines absent. Gnathopod 1 basis slender, much less than half as broad as long; palm evenly continuous with posterior margin, palm defined by rounded or oblique corner or corner undefined.

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