Alainius crosnieri Baba, 1991

Synonymy:

Alainius crosnieri Baba, 1991b: 480, figs 1, 2, 5 (Loyalty Islands, New Caledonia, 90–600 m). — Baba, 2005: 237 (synonymies). — Martin & Haney, 2005: 476 (hydrothermal vents and cold seeps review).

Type Data:

Holotype, female, MNHN Ga 2037.

Type locality:

Loyalty Islands, 460 m.

Etymology:

The generic and specific names are dedicated to Alain Crosnier who participated in the expeditions to New Caledonia.

Diagnostic description:

Carapace with distinct transverse striae, without dorsal spines. Branchial margin with 3 spines. Rostrum dagger-shaped, with feeble dentition usually on distal portion; moderate supraocular spine on each side. Lateral limit of orbit unarmed, not produced. Abdominal somites 2–4 each with 2 elevated transverse ridges, unarmed. Telson subdivision incomplete. Cornea dilated. Antennular article 1 with 3 distal spines. Antennal article 1 with prominent ventrodistal process mesially. Sternite 3 relatively wide, posteriorly narrowed. P1 relative massive. P2–4 relatively stout, dactyli flattened mesiolaterally, flexor margin with row of seta-like movable spines. Male P5 without toothbrush-like setae. G1 and G2 present.

Size:

Males, 3.9-4.1 mm; females, 3.3-5.0 mm.

Color:

<p>Body including abdomen light orange, paler on posterior abdominal somites. Carapace with reddish anterolateral portion and lateral margins, but latter invisible in dorsal view; anterior one-fourth of carapace tinged with light purple. Pterygostomian flap with small red spots in longitudinal row. Pereopods orange, dactyli including fixed finger of cheliped very pale in color. Palm of cheliped distally with red circular mark extending from middorsal to midventral surface, including mesial face.</p>

Distribution:

Loyalty Islands, 460 m.

Squat Lobsters

Taxonomy

Alainius crosnieri Baba, 1991

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