Mediterranean Amphipoda: Aoridae

R. King & A.A. Myers

Lembos spiniventris Stebbing, 1895: 207. --Ledoyer, 1793: 885, fig. 4. --Myers, 1974c: 15, figs. 1-7. --Myers, 1982a: 123-124, figs. 80-81.

Autonoe spiniventris. --Della Valle, 1893: 400, pl. 5, fig. 7, pl. 56, figs. 17-34. --Myers, 1982a: 819.

Type material. Unknown.

Type locality. Napoli (Naples), Italy.

Description. Based on Myers, 1982a: 123-124, figs. 80-81.

Head. Rostrum absent or vestigial; Lateral cephalic lobes apically round, anteroventral margin moderately excavate, moderately recessed. Antenna 1 flagellum with 20 or less articles; accessory flagellum present and multiarticulate. Antenna 2 with few long setae. Labium with fine setae only. Maxilla 1 inner plate without setae. Maxilliped basis without strong flange on anterior margin. Mandible, palp article 3 subequal to 2, posterior margin strongly 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 both sexes; coxa distinctly produced anterodistally, acute; basis slender, much less than half 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 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 forming a broad excavate sinus, palm defined by subquadrate corner, with robust seta defining palm, without spine near base of dactylus; dactylus about 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. 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 with distoventral interramal spine. Uropod 3 biramous, rami subequal, inner ramus twice length of peduncle. Telson with distal fine setae and robust setae.

Habitat. Infralittoral on sandy bottoms (Myers, 1982a).

Depth zones. Littoral, or Continental shelf.

Distribution. Mediterranean.

Peraeon. Sternal spines absent. Gnathopod 1 coxa distinctly produced anterodistally, sub-acute; margin entire, palm defined by rounded or oblique corner or corner undefined; fitting palm.

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