Calcinus pascuensis Haig, 1974
Illustrations. - Chelae (b-c); ocular peduncles (a), walking legs (d-e), telson (f), setae (g). From Poupin et al., 2003: 93, fig. 1. Neotype male (AMNH 18177) (in preservative). Neotype male (AMNH 18177) (in preservative). Neotype male (AMNH 18177) (in preservative). Neotype male (AMNH 18177) (in preservative). Ocular peduncle, color pattern. After Haig, 1974. Right third pereopod, color pattern. After Haig, 1974. Right chela, color pattern. After Haig, 1974.
References. - Calcinus pascuensis Haig, 1974: 27 (type locality, Easter Island).
Calcinus pascuensis - Poupin et al., 2003: 93 (Easter Island).
Shield and cephalic appendages. - Ocular scale with a single terminal spine.
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. Distal pilosity of P3 weak, similar to distal P2.
Armament of telson. - Left lobe of telson with several spines disposed on posterior and lateral margins (lateral margin with 810 spines; posterior margin with 36). Right lobe with several spines (68).
Coloration. - Shield orange (coloration from preserved specimens only). Ocular peduncle multicolored with narrow ring close to cornea. Detailed coloration of ocular peduncle: proximally pink, medially orange, narrow white ring close to cornea. Distal antennular peduncle blue or dark blue (on distal half only; basal segments and proximal half of terminal segment orange; flagella yellow). Distal antennal peduncle yellow-orange (basal segments and flagellum similarly colored). Chela with brown, dark orange or red patches (background pink with brown patches on inner and outer faces and along ventral margin; carpus pink with subtriangular brown patch on outer face). Ambulatory legs (P2 & P3) with longitudinal bands (background pink with longitudinal orange brown stripes).
Habitat. - Intertidal rocky shores, shallow-waters (from shore to depth of 23 m).
Geographic distribution. - Easter Island only. Indo-West Pacific.
Remarks. - Endemic species of Easter Island.