Debroyerella solidus Andres 1986

Debroyerella solidus (Andres, 1986)

Cheirimedon similis.— Andres, 1983: 185.

Cheirimedon solidus Andres, 1986: 120, figs 5, 6.— De Broyer & Jażdżewski, 1993: 66.— De Broyer et al., 2007: 138.

Types. Holotype, male, 11 mm, ZMH K 33164.

Type locality. Weddell Sea, Antarctica (77°36.0'S 18°39.3'W).

Description. Head, lateral cephalic lobe rounded; eyes reniform. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 4-articulate; primary flagellum with weak 1-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae present; calceoli absent. Labrum (epistome and upper lip) separate; epistome produced equally with upper lip, straight; upper lip produced, rounded apically. Mandible molar an (?) asymmetrically reduced column, proximally setose, distally triturating; left lacinia mobilis a long, slender robust seta. Maxilla 1 outer plate setal-teeth in a well-developed 7/4 crown arrangement; palp distal margin with apical robust setae. Maxilla 2 inner plate significantly shorter than outer plate. Maxilliped outer plate with 2 long (one slender, one broad) apical robust setae.

Gnathopod 1 coxa large, about as long as coxa 2, subrectangular with slightly concave anterior margin, slightly expanded distally; basis sparsely setose along anterior margin; ischium short; propodus margins subparallel, palm transverse or slightly acute, entire, convex, minutely serrate; dactylus simple. Gnathopod 2 subchelate; propodus palm transverse, straight; dactylus fitting palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa about as long as broad, producing slight posterior lobe; basis longer than broad, posterior margin weakly serrate; carpus 2 × longer than wide; propodus 3 × times longer than wide. Pereopod 6 carpus 2.5 × longer than wide; propodus 3 × times longer than wide. Pereopod 7 basis posterior margin evenly rounded, posterodistally produced less than halfway along merus; carpus 2.5 × longer than wide; propodus 3 × times longer than wide.

Epimeron 3 posterior margin smooth or minutely serrate, posteroventral corner subquadrate. Uropod 2 inner ramus without constriction. Uropod 3 inner ramus slightly shorter than outer ramus; outer ramus article 2 short, with plumose setae on both rami. Telson distinctly longer than broad (length 1.6 × width), cleft to 35% of length, with 1 apical robust seta on each lobe.

Depth range. 0–201 m in water depth of 1900 m.

Remarks. Most similar to D. fougneri, Debroyerella solidus differs from that species by the shorter and stouter carpus and propodus of pereopods 5–7.

Distribution. Antarctica. Scotia-Faunengebiet and Weddell Sea (Andres 1986).