Gebiacantha albengai, Ngoc-Ho, 2005

Ngoc-Ho, Nguyen, 2005, Thalassinidea (Crustacea, Decapoda) from French Polynesia, Zoosystema 27 (1), pp. 47-83 : 79-81

Gebiacantha albengai n. sp.

( Fig. 17 )

TYPE MATERIAL. — Holotype: Rapa Island , Austral,

Ngoc-Ho N.

19.XI.2002 ,, cl. 6 mm, tl. 14.5 mm ( MNHN Th 1436).

ETYMOLOGY. — The species is named for Laurent Albenga who sorted the material.

DISTRIBUTION. — Only known from the type locality. DIAGNOSIS. — Rostrum nearly twice as long as wide, three infrarostral spines and six small spiniform teeth on lateral border; anterolateral border of carapace with single spine; seven spinules on lateral ridges of gastric region. Telson with lateral borders convex, posterior border concave medially.

A1 peduncle with lower spine on article 1; A2 peduncle with lower spine on article 3. P1 subchelate, lower spine on ischium; upper subdistal spine and seven lower spines on merus; carpus with three upper spines and four subdistal spines: one upper, one lower and two large mesial; propodus bearing nine upper spines and upper mesial distal spine near base of dactylus, four lower spines on proximal half and two mesial lower spines, near base of fixed finger, latter carrying five small pointed teeth on cutting edge. Dactylus dentate on upper border, cutting edge unarmed. P2 merus with upper distal spine and four lower proximal spines; carpus with upper and lower subdistal spine; propodus with upper proximal spine. P3 merus with two lower spines, lower distal spine on carpus.

Uropod exopod and endopod longer than telson, posterior border nearly straight, lateral inner border convex.

DESCRIPTION

Figures

FIG. 17. — Gebiacantha albengai n. sp., Rapa, holotype, (MNHN Th 1436); A, B, anterior part of carapace, dorsal and lateral view; C, D, antennule and antenna; E, F, pereopod 1 and distal part in mesial view; G, H, pereopod 2 and 3; I, pleopod 3; J, telson and