Mediterranean Amphipoda: Aoridae

R. King & A.A. Myers

Microdeutopus sporadhi Myers, 1969b: 136, figs. 21-22. --Myers, 1982a: 152, fig. 101.

Type material. Unknown.

Type locality. Emborios Bay, Khíos, Greece.

Description. Based on Myers, 1969b: 136, figs. 21-22; Myers, 1982a: 152, fig. 101.

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 only. Maxilla 1 inner plate with 1 long pectinate apical seta. Maxilliped basis with strong flange on anterior margin; palp with wing-like flanges on anterior margin of basis. Mandible, palp article 3 longer than 2, posterior margin strongly falcate or widest medially, 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 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 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 one and one third to one and one half 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 straight or evenly convex, palm absent; dactylus about half length of propodus. Gnathopod 2 subchelate; basis anterodistal margin with 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, palm with robust seta(e) defining palm. Pereopod 6 basis not or weakly produced posterodistally.

Pleon. Uropod 1 biramous, 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, outer ramus shorter than inner, inner ramus subequal with length of peduncle. Telson with distal fine setae only.

Habitat. In a shallow lagoon with considerable accumulation of detritus.

Depth zones. Littoral.

Distribution. Mediterranean Sea.

Head. Maxilliped palp with wing-like flanges on anterior margin of basis, or with wing-like flanges on anterior margin of basis, ischium and merus.

Peraeon. Sternal spines absent. Gnathopod 1 coxa distinctly produced anterodistally, rounded; carpus two thirds length of propodus, posterior margin without spines; propodus longer than carpus, palm present, palm delimited from posterior margin, margin entire, palm defined by rounded or oblique corner or corner undefined, with robust seta defining palm; significantly overlapping palm. Gnathopod 2 basis anterodistal margin without flange; carpus subequal with or shorter than propodus.

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