Australian Amphipoda: Aoridae

J.K. Lowry, P.B. Berents & R.T. Springthorpe

Lembos ruffoi Myers, 1975b: 22, figs 68-75.

Lembos (Globosolembos) ruffoi. --Myers, 1985a: 341.

Lembos sp. --Myers,1985a: 365, fig. 235.

Globosolembos ruffoi. --Myers, 1988a: 189. --Myers, 1988b: 327, fig. 54.

Type material. HOLOTYPE: male, 5.0 mm, MV. PARATYPE: female, 6.0 mm, ZMC.

Type locality. Watamu Bay, Kenya.

Description. Based on Myers, 1975: 22, figs 68-75 [Kenya]; Myers, 1988: 327, figs 54 [Lizard Island].

Head. Rostrum absent or vestigial; Lateral cephalic lobes apically truncate, anteroventral margin shallowly excavate, scarcely recessed. Antenna 1 flagellum with 21 or more articles; accessory flagellum present and multiarticulate. Antenna 2 with profuse long setae. Labium with fine setae and stout setae. 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 or widest medially, mandible palp posterior margin setae of more than two distinct lengths.

Peraeon. Sternal spines present, on other pereonites, apically rounded. Gnathopod 1 enlarged in both sexes; coxa distinctly produced anterodistally, rounded; 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 strong posterodistal spine, with robust seta defining palm, without spine near base of dactylus; dactylus more than half length of propodus, fitting palm. Gnathopod 2 subchelate; basis anterodistal margin with flange, posterodistal margin without robust setae; with few setae along length of basis; carpus subequal with or shorter 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 greater than 125% length of pereopod 6.

Pleon. Epimeron 3 posterodistal margin rounded. Uropod 1 biramous, rami inner ramus distinctly longer than outer, peduncle much longer than broad, distoventral interramal spine shorter than 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 only.

Habitat. Among coral rubble.

Depth zones. Littoral (1 to 18 m depth).

Distribution. Queensland: Lizard Island, Great Barrier Reef (Myers, 1988b); Sandbank Reef, Great Barrier Reef (Myers, 1988b).

Geographic areas. North-eastern Australia.

Extrinsic distribution. East Africa; ?India.

Peraeon. Sternal spines absent. Gnathopod 1 coxa unproduced anterodistally, or distinctly produced anterodistally, rounded; anterior-distal margin densely clothed in long setae, palm defined by strong posterodistal spine or defined by subquadrate corner. Gnathopod 2 moderately to sparsely setiferous.

Cite this publication as: 'J.K. Lowry, P.B. Berents & R.T. Springthorpe (2001 onwards). Australian Amphipoda: Aoridae. Version 1: 2 October 2000. https://crustacea.net/'. Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993, 1995, 2000) should also be cited (see References).

Index