Hermit crabs Calcinus of the world (Anomura: Diogenidae)


Calcinus seurati Forest, 1951

Illustrations. - • Male, shield length 5.0 mm, Tuamotu. • Ocular peduncles, color pattern. • Left third pereiopod, coloration pattern.

References. - Calcinus seurati Forest, 1951: 84 (type locality: Hao atoll, Tuamotu).

Calcinus seurati - Haig & McLaughlin, 1984: 109 (Hawaii). - Wooster, 1984: 158 (Pagan, Marianas). - Morgan, 1991: 898 (Christmas and Cocos). - Yu & Foo, 1991: 38 (Taiwan). - ? Asakura, 1992: 39 (Japon; could be C. vachoni). - Poupin, 1994: 19 (Hao, Taiaro, Tuamotu). - Hoover, 1998: 257 (Hawaii). - Shi, 1998: 92, fig. 29–31 (Taiwan). - Kato & Okuno, 2001: 74 (Japan).

[Not C. seurati - Matsuzawa, 1977. - Nomura et al., 1988. - Takeda, 1994. All = C. vachoni].

Shield and cephalic appendages. - Ocular scale with a single terminal spine.

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

Ambulatory legs (P2-P3). - Dorsolateral margins of P3 propodi slightly carinated. Dactyl of P3 subequal to propodus or slightly shorter (0.8–1.1). Distal pilosity of P3 weak, similar to distal P2.

Armament of telson. - Left lobe of telson with a single spine (0–2). Right lobe with a single spine (rarely 2).

Coloration. - Shield white or cream. Ocular peduncle multicolored without narrow ring close to cornea. Detailed coloration of ocular peduncle: basal narrow orange ring, gray-blue band proximally, gradually turning to orange distally. Distal antennular peduncle blue or dark blue (basal segments blue but with orange tinges at articulations). Distal antennal peduncle yellow-orange (basal segments are grey-blue; flagellum orange). Chela uniformly colored, often grading to paler distally (uniformely white). Ambulatory legs (P2 & P3) with ring(s) and longitudinal bands (bands and rings grey-blue; background white).

Habitat. - Intertidal rocky shores.

Geographic distribution. - Christmas & Cocos Islands; Taiwan; Mariana Islands; Hawaii Islands; French Polynesia (Austral, Society, Marquesas, Gambier, and Tuamotu); Japan. Indo-West Pacific.

Remarks. - Several color illustrations from Japan (see references) represent in fact C. vachoni Forest.

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.