Oncinopus postillonensis Griffin and Tranter, 1986

Manikandan, K, Megalaa, N, Valliappan, Subramanian, Nandini, K, Rani, Lourdu V, Dakshinamurthi, Senthil & Nagappan, Nagappan, 2022, Crabs (Crustacea, Decapoda) from the Seas of East and Southeast Asia Collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 3. Sahul Shelf, Bulletin of the National Museum of Nature and Science. Series A, Zoology 48 (2), pp. 35-83 : 47

Oncinopus postillonensis Griffin and Tranter, 1986

( Fig. 5E )

Material examined. RV Hakuhō Maru KH-72-1 cruise, sta. 29, 1 ovig. ♀ ( CB 5.4×CL 6.2 mm), NSMT-Cr 30712.

Remarks. Oncinopus postillonensis was originally described by Griffin and Tranter (1986 a) based on the specimens from the Flores Sea, Timor, and the Sulu Archipelago. As seen in the photographs of an ovigerous female ( Fig. 5E ), this species is distinctive in the broad rostral lobe, which is dorsoventrally flattened and divided into two by a median, narrow and deep hiatus. In addition, the G1 shaft with its distal part bent laterally, is unique to P. postillonensis .

Distribution. The known geographical range is from the Flores Sea to the Sulu Archipelago, 15–36 m depth ( Griffin and Tranter, 1986 a), and to Okinawa Island in the Ryukyu Islands, 60–70 m depth ( Marumura and Takeda, 2009).

Figures

Fig. 5.ɹA: Achaeus brevirostris (Haswell), Ə (NSMT-Cr 30706; CB 5.1×CL 7.6mm) from sta. 29. B: Achaeus lacertosus Stimpson, ♀ (NSMT-Cr 30707; CB 3.2×CL 3.8mm) from sta. 29. C: Achaeus paradicei Griffin, Ə (NSMT-Cr 30709; CB 3.6×CL 4.7mm) from sta. 29. D: Oncinopus kathae Davie, ovig. ♀ (NSMT-Cr 30711; CB 5.8×CL 7.9mm) from sta. 29. E: O. postillonensis Griffin and Tranter, ovig. ♀(NSMT-Cr 30712; CB 5.4×CL 6.2mm) from sta. 29.