Griffinia gilloloensis ( Rathbun, 1916 )

Ng, Peter K. L., Forges, Bertrand Richer De & Lee, Bee Yan, 2023, New and rare deep-sea majoid crabs (Crustacea: Brachyura) from Papua New Guinea, Zootaxa 5318 (1), pp. 1-44 : 37-38

Griffinia gilloloensis ( Rathbun, 1916)

( Figs. 27A–D , 28A–E )

Antilibinia gilloloensis Rathbun, 1916: 537 .— Rathbun 1918: 13.— Sakai 1965: 43, fig. 2.— Sakai 1976: 201, fig. 109.— Griffin & Tranter 1986: 70.

Griffinia gilloloensis . — Richer de Forges 1994: 67, figs. 1A, B, 2A.— Ng et al. 2008: 100.

Material examined. 1 male (pcl 13.5 mm, pcw 11.3 mm), 1 ovigerous female (pcl 12.5 mm, pcw 8.4 mm) (MNHN- IU-2011-2924), 1 ovigerous female (pcl 13.5 mm, pcw 9.5 mm) ( ZRC 2022.76 ), stn CP 3692, Manus Island , Papua New Guinea, 02°10’S 147°19’E, 408–448 m, coll. N.O. Alis, BIOPAPUA cruise, 29 September 2010 ; 1 male (pcl 13.0 mm, pcw 10.5 mm) ( ZRC 2022.72 ), 9°27.4’N, 123°43.1’E, stn CP 2390, Bohol Sea , Philippines, 627–645 m, coll. M/ V DA-BFAR, PANGLAO 2005 cruise, 30 May 2005 .

Remarks. This is a rare species, previously reported from the holotype from Halmahera ( Indonesia) and Japan (cf. Rathbun 1916; Sakai 1965, 1976; Richer de Forges 1994). Richer de Forges (1994) incorrectly recorded the type locality as the Philippines; it is in fact off Halmahera, Indonesia ( Rathbun 1916). We do, however, have one specimen from the Bohol Sea, which is also a new record for the country. The present specimens from Papua New Guinea extend the range of the species substantially to the south.

The G1 of G. gilloloensis is diagnostic, being proportionately much longer than those of congeners ( Fig. 28C–E ).

Figures

FIGURE 27. Griffinia gilloloensis (Rathbun, 1916). A, B, male (pcl 13.0 mm) (ZRC 2022.72), Bohol Sea; C, D, male (cl 13.5 mm) (MNHN-IU-2011-2924), Manus Island. A, C, overall dorsal view; B, D, dorsal view of carapace.

FIGURE 28. Griffinia gilloloensis (Rathbun, 1916), male (pcl 13.5 mm) (MNHN-IU-2011-2924), Manus Island. A, ventral view of cephalothorax; B, right chela; C, left G1 (ventral view); D, distal part of left G1 (ventral view); E, distal part of left G1 (dorsal view).