Cryptodromia hilgendorfi De Man, 1888

Mclay, Colin L., 2001, Dynomenidae and Dromiidae (Decapoda, Brachyura) from Guam, Philippine Islands, Tonga and Samoa, Zoosystema 23 (4), pp. 807-856 : 834

Cryptodromia hilgendorfi De Man, 1888

Cryptodromia hilgendorfi De Man, 1888a: 404 , pl. 18, fig 3. — Lewinsohn 1984: 109. — McLay 1993: 205, fig 18d; 1998: 347.

MATERIAL EXAMINED. — Guam. Calalan Bank, off Glass Breakwater, 13°27’N, 144°47’E, on dead branching coral, 23 m, 23.VIII.1984, coll. R. K. Kropp, 1 4.6 × 4.9 mm (compound ascidian cap) ( GUM 149) ( ZRC 2000.2119). — Piti Lagoon, bomb holes, on the sponge Dysidea granulosa Bergquist, 1965 , 17.IV.1998, coll. V. Paul, 1 6.3 × 6.0 mm ( UGI no registration number) ( ZRC 2000.0752). — Tepungan Channel, 3 m, on wall, 15.X.1998, 1 juvenile 2.2 × 2.3 mm (sponge cap) ( UGI no registration number, coll. L. Kirkendale) ( ZRC 2000.0753). — Tepungan Channel, 2 m, 4.XI.1998, coll. L. Kirkendale, 2

3.5 × 3.2, 5.9 × 5.1 mm (sponge caps) ( UGI no registration number) ( ZRC 2000.0754). — No exact locality, 1 m, I.1945, coll. M. Baker, 1 4.3 × 4.4 mm (sponge cap) ( USNM 170990). — No exact locality, no depth, IV.1945, coll. L. Gressitt, 1 6.7 × 6.6 mm (sponge cap) ( USNM 172150).

Philippine Islands. Luzon, Grand Island, Subic Bay, X.1907, coll. J. C. Thomson, 1 7.8 × 7.6 mm (sponge cap) ( USNM 136 895). — Sulu Archipelago, Tawi Tawi group, Albatross, stn D 5158, 5°11.50’N, 119°54.00’E, 18 m, 21.II.1908, 1 6.5 × 6.3 mm ( USNM).

SIZE. — Four females ranging in size from 3.5 × 3.2 to 6.7 × 6.6 mm and one juvenile were collected. All of the females had already undergone the pubertal moult and so were sexually mature. For discussion of the size at maturity for C. hilgendorfi see McLay (2001). The maximum cw for females is 14.5 mm and for males 16.0 mm.

DEPTH AND HABITAT. — Intertidal to around 100 m. Most of the Guam specimens came from shallow water of only 2-3 m but one specimen came from 23 m. C. hilgendorfi is usually associated with sponges and ascidians.

DISTRIBUTION. — C. hilgendorfi is a wide-spread Indo-West Pacific species until recently extending as far east as the Gilbert and Ellice Islands, but now known from French Polynesia (see McLay 2001). This a new record for Guam. C. hilgendorfi is also known from the Philippines, Xisha Islands, China and the Macclesfield Bank.