Singhaplax, SERENE & SOH, 1976

Castro, Peter, 2007, A reappraisal of the family Goneplacidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) and revision of the subfamily Goneplacinae, with the description of 10 new genera and 18 new species, Zoosystema 29 (4), pp. 609-774 : 713

KEY TO SPECIES OF SINGHAPLAX SERÈNE & SOH, 1976

1. P5 dactylus broad, dorso-ventrally flattened, wide, without carina, bordered by many long, simple setae (see Fig. 37 ) ............................................ Singhaplax platypoda n. sp.

— P5 dactylus slender, laterally flattened, narrow, with carina, not bordered by setae ...... 2

2. G1 with bilobed apical process ................................................................................... 3

— G1 with simple tip, not bilobed, although tip may be grooved (see Fig. 38B ) ............. 4

3. Two apical processes of G1 large, conspicuous, beak-like (see Serène & Umali 1972: figs 86, 87, as Goneplax ockelmanni ; Serène & Soh 1976: fig. 15B, B’). G2 with pointed tip (see Serène & Umali 1972: fig. 88, as Goneplax ockelmanni ; Serène & Soh 1976: fig. 15C) .................................................................................................. Singhaplax ockelmanni

— Two apical processes of G1 small (see Fig. 35B ); tip broad, truncated appearance. G2 tip with terminal spinule (see Fig. 35C ) ................................... Singhaplax dichotoma n. sp.

4. G1 with rounded, grooved tip (see Fig. 38B ) ........................ Singhaplax rhamphe n. sp.

— G1 with slender, non-grooved tip ............................................................................... 5

5. Conspicuous curved tooth on median portion of inner margin of cheliped (P1) merus. Male abdomen wide ........................................................................... Singhaplax wolffi

— Median portion of inner margin of cheliped (P1) merus without tooth. Male abdomen narrow (see Tesch 1918: pl. 10, fig. 2 e, as Ommatocarcinus orientalis ) ......................... 6

6. G1 with obtuse tip (see Fig. 39B ). G2 with pointed tip (see Fig. 39C ) .......................... .................................................................................................. Singhaplax styrax n. sp.

— G1 with acute tip. G2 with terminal spinule (see Tesch 1918: pl. 10, fig. 2 e) ................. ...................................................................................................... Singhaplax orientalis

Figures

FIG. 37. — Singhaplax platypoda n. sp.,pre-adult ♀ paratype,cl 3.3 mm,cw 6.0 mm,Futuna I., MUSORSTOM 7, stn DW 495 (MNHN-B 30068).

FIG. 38. — Singhaplax rhamphe n. sp., ♂ holotype, cl 4.4 mm, cw 7.6 mm, Kai Is, Indonesia, KARUBAR, stn DW 29 (MNHN-B 30071): A, dorsal surface of the carapace; B, left G1, ventral view; C, right G2, ventral view. Scale bars: A, 5 mm; B, C, 1 mm.

FIG. 35. — Singhaplax dichotoma n. sp.,♂ holotype,cl 4.0 mm, cw 6.1 mm, Kai Is, Indonesia,KARUBAR,stn DW 29 (MNHN-B 30069): A, dorsal surface of the carapace; B, left G1, ventral view; C, right G2, ventral view. Scale bars: A, 5 mm; B, C, 1 mm.

FIG. 39. — Singhaplax styrax n. sp., ♂ holotype, cl 4.1 mm, cw 6.7 mm, Kai Is, Indonesia, KARUBAR, stn DW 18 (MNHN-B 29211): A, dorsal surface of the carapace; B, left G1, ventral view; C, left G2, ventral view. Scale bars: A, 5 mm; B, C, 1 mm.