Petrolisthes gertrudae Werding, 1996

Poupin, Joseph & Lemaitre, Rafael, 2014, Porcellanid crabs from Guadeloupe Island (Crustacea, Decapoda, Anomura), with an updated list of species from the Lesser Antilles, Zoosystema 36 (1), pp. 5-27 : 18

Petrolisthes gertrudae Werding, 1996

Petrolisthes gertrudae Werding, 1996: 300 , figs 1, 2 (type locality: Guadeloupe, also Bonaire). — Werding et al. 2003: 81, tab. 1 (Lesser Antilles).

MATERIAL EXAMINED. — None.

DIAGNOSIS. — (Adapted from Werding 1996). Carapace smooth; supra-ocular and external orbital angles unarmed; epibranchial region unarmed.Carpus of cheliped anteriorly rounded, sometimes slightly denticulated on proximal portion; dorsal surface granulated; posterior margin unarmed. Palm of cheliped granulated on dorsal surface; anterior and posterior margins unarmed; anterior margin with thick tuft of long setae, not extended onto fixed finger; gape of fingers without pubescence. Ambulatory legs unarmed and devoid of setae on anterior margins; dactylus with four movable spines on posterior margin. Telson composed of seven plates

REMARKS. — Although P. gertrudae was originally described from Guadeloupe Island, it was not retrieved during KARUBENTHOS. It cannot be confused with any of the other porcellanid species recognized during the expedition based on the armatures on the carapace, cheliped and ambulatory legs, and the noticeable thick tufts of long setae covering the anterior margin of the palm of the cheliped (see Werding 1996: 307, fig. 1).

HABITAT. — Living on the exposed reef of the upper littoral region, in colony of zoanthid coral Zoanthus fasciatus ( Werding, 1996) .

DISTRIBUTION. — Lesser Antilles (ICA, Guadeloupe; IOV, Bonaire).