Homolodromia kai Guinot, 1993

Ahyong, Shane T., 2008, Deepwater crabs from seamounts and chemosynthetic habitats off eastern New Zealand (Crustacea: Decapoda: Brachyura), Zootaxa 1708 (1), pp. 1-72 : 11

Homolodromia kai Guinot, 1993

( Fig. 1B )

Homolodromia kai Guinot, 1993: 1228 , fig. 5 [type locality: Kai Islands, Indonesia]; 1995: 197–200, fig. 5B, 9a–d, 10A– D. — Ng & Ho 1999: 1123–1125, fig. 1. — Dawson 2002: 6–12, figs 1c, 2, pls 1–3. — Poore 2004: 311, fig. 89e.

Material examined. Mahina Knoll: NIWA 6761 , 1 female (cl 19.9 mm, cw 14.6 mm), 37°21.74–21.40’S, 177°06.63’E, 632– 458 m, TAN0413/136, 14 Nov 2004 .

Eastern Australia: AM P60914, 1 female (cl 36.1 mm), E of Port Stephens , New South Wales, 32°49’S, 152°47’E, 935 m, K88-21-02, 3 Dec 1988 .

Remarks. The present specimen is the second to be recorded from New Zealand, with the first also from the Bay of Plenty at a depth of 350–382 m ( Dawson 2002). Homolodromia kai is one of three known New Zealand homolodromiids. The two others, Dicranodromia delli sp. nov. and D. spinulata Guinot, 1995 , can be distinguished from H. kai by their the subcheliform rather than cheliform P4–5 (compare Fig. 1C , 2A , 4D ), and proportionally shorter P2–3 dactyli, being markedly shorter, rather than as long as than their respective propodi ( Fig. 1C , 3D ). Poore’s (2004) record of H. kai from southeastern Australia is based on a 36.1 mm female (AM P60914), the largest and deepest known specimen of the species.

Distribution. Indonesia, the South China Sea, Vanuatu, New Caledonia, southeastern Australia and northeastern New Zealand; 350– 935 m.

Figures

FIGURE 1. A, Dagnaudus petterdi (Grant, 1905), female, pcl 44.1 mm (NIWA 34784). B, Homolodromia kai Guinot, 1995, female, cl 19.9 mm, cw 14.6 mm (NIWA 6761). C, Dicranodromia spinulata Guinot, 1995, male, cl 9.6 mm, cw 6.8 mm (NIWA 34933). D, Cymonomus clarki sp. nov., ovigerous female holotype, cl 6.9 mm, cw 6.6 mm (NIWA 29666). E, Lyreidus tridentatus De Haan, 1841, female, cl 46.6 mm (NIWA 6723). F, Cymonomus aequilonius Dell, 1971, female, cl 7.7 mm, cw 6.7 mm (NIWA 34966).

FIGURE 2. Dicranodromia delli sp. nov., ovigerous female holotype, cl 19.0 mm, cw 15.5 mm (NIWA 18049). A, dorsal habitus. B, carapace, dorsal view.

FIGURE 3. Dicranodromia delli sp. nov., ovigerous female holotype, cl 19.0 mm, cw 15.5 mm (NIWA 18049). A, right lateral. B, anterior. C, ventral. D, right pereopods.

FIGURE 4. Dicranodromia delli sp. nov., ovigerous female holotype, cl 19.0 mm, cw 15.5 mm (NIWA 18049). A, anterior, dorsal view. B, anterior, ventral view. C, left third maxilliped. D, left P5 dactylus and propodus. Scale: A–C = 2.0 mm, D = 1.0 mm.