Hermit crabs Calcinus of the world (Anomura: Diogenidae)


Calcinus gouti Poupin, 1997

Illustrations. - • Female holotype, shield length 2.6 mm, Tuamotu. • Male shield length 5.0 mm, Tikehau, 15 m (UF 1349). Copyright G. Paulay. • Male, Tikehau atoll, Tuamotu. Copyright G. Paulay. • Male, Tikehau atoll: a) anterior portion of shield; b) left chela; c) right chela; f) telson. After Poupin & Lemaitre (2003, fig. 3). • Male, Tikehau atoll: d) right P2; e) right P3. After Poupin & Lemaitre (2003, fig. 3). • Holotype, aspect of left chela, outer face. • Left third pereopod, color pattern.

References. - Calcinus gouti Poupin, 1997: 690 (type locality, Tuamotu, French Polynesia).

Calcinus gouti - Poupin & McLaughlin, 1998: 13 (Society & Tuamotu, French Polynesia). - Poupin & Lemaitre, 2003 (Austral, Society, Tuamotu; French Polynesia).

Shield and cephalic appendages. - Ocular scale with several terminal spines (2–3 spines).

Chelipeds (P1). - Upper margin of right chela tuberculated or spinous. Outer face of left palm regularly convex.

Ambulatory legs (P2-P3). - Dactyl of P3 subequal to propodus or slightly shorter (0.8–1.1). Distal pilosity of P3 more prononced than on distal P2, but not forming a dense brush of setae.

Armament of telson. - Left lobe of telson with several spines disposed on posterior and lateral margins (4–6 spines on lateral margin; 5 on posterior margin). Right lobe with several spines (5–8).

Coloration. - Shield white or cream. Ocular peduncle multicolored without narrow ring close to cornea. Detailed coloration of ocular peduncle: proximally pink, grading to pale pink or white distally (variation include completely white on female holotype). Distal antennular peduncle white to cream (basal segments and proximal 0.5 of terminal segment yellow; flagella yellow). Distal antennal peduncle white (basal segments white with yellow patches; flagellum yellow). Chela with submedian patch or spot on outer face (background color white to cream; carpus of cheliped light brown, with black patch on proximo-dorsal area). Ambulatory legs (P2 & P3) with ring(s) (pink on a white cream background).

Habitat. - Facultative associates of corals (e.g. Pocillopora, Acropora), shallow-waters.

Geographic distribution. - French Polynesia (Tuamotu and Society Islands). Indo-West Pacific.

Remarks. - C. gouti is affiliated to C. lineapropodus and C. pulcher. The three species have in common a submedian dark spot on outer face of chelae. Although they are almost similar morphologically, they can be readily separated by very distinct color pattern.

Cite this publication as: J. Poupin (2003, Internet). - Hermit crabs Calcinus of the world (Anomura, Diogenidae). Descriptions, Illustrations, Identification, and Information Retrieval, using the DELTA format.