Euxanthus herdmani Laurie, 1906

Mendoza, Jose Christopher E. & Ng, Peter K. L., 2010, The Euxanthine Crabs (Crustacea: Brachyura: Xanthidae) Of The Philippines, Raffles Bulletin of Zoology 58 (1), pp. 57-74 : 62

Euxanthus herdmani Laurie, 1906

( Fig. 1D )

Euxanthus herdmani – Garth & Kim, 1983: 669; Serène, 1984: 85, Pl. 11 Fig. D.

Material examined. – 1 male, 10.0 × 7.6 mm (NMCR-27334), Stn. S 32, 9°35.8'N 123°44.6'E, Looc, Panglao Is., 2–3 m, coll. PANGLAO 2004 Expedition, 28 Jun.2004 .

Remarks. – This is a rarely reported species and the single male specimen agrees well with the original description and figure as well as those in Serène (1984). The carapace is orange, with blotches of dark brown on the supraorbital region and portions of the first and second anterolateral teeth. The cardiac and medial intestinal regions are brownishorange. The posterolateral concavity for the coadaptation of ambulatory legs is white. The meri of the chelipeds and P2–P4 are generally white, the carpi, propodi, and dactyli are pinkish-purple. In P5, only the proximal portions of the merus and dactylus are pinkish-purple, with the rest being white. Euxanthus herdmani has previously been recorded from Camiguin Island, in the Philippines (Garth & Kim, 1983), as well as Sri Lanka and Seychelles, in the western Indian Ocean ( Guinot-Dumortier, 1960; Serène, 1984).

Figures

Fig. 1. Live colouration of euxanthine crabs from the Philippines: A, Cranaothus deforgesi Ng, 1993, male (8.0 × 5.9 mm) (R59, Panglao Is., ZRC 2008.1365); B, Crosnierius carinatus Serène & Vadon, 1981, female (15.6 × 11.8 mm) (CP2737, eastern coast of Luzon, ZRC 2008.1370); C, Epistocavea mururoa Davie, 1993, male (33.2 × 23.5 mm) (L36, Panglao Is., ZRC 2008.1371); D, Euxanthus herdmani Laurie, 1906, male (10.0 by 7.6 mm) (S32, Panglao Is., NMCR-27334); E) Euxanthus huonii (Hombron & Jacquinot, 1846), male (31.9 × 21.9 mm) (M17, Panglao Is., ZRC 2008.1376); F, Hepatoporus orientalis (Sakai, 1935) male (8.1 × 6.0 mm) (CP2862, off Batangas coast, ZRC 2008.1379).