Diogenes rectimanus Miers, 1884

Komai, Tomoyuki, Liang, Jingzhen & Yang, Tingbao, 2012, Records of four species of the shallow water hermit crab genus Diogenes (Crustacea: Decapoda: Anomura: Diogenidae) from southern China, with description of a new species, Journal of Natural History 46 (19 - 20), pp. 1219-1248 : 1245

Diogenes rectimanus Miers, 1884

Diogenes rectimanus Miers, 1884, p. 262 , pl. 27, figure c [type locality: Torres Strait]; Alcock 1905, p. 71, pl. 6, figure 8, 8a, pl. 7, figure 2, 2a; Wang 1991, p. 226, figure 185; McLaughlin and Clark 1997, p. 37, figure 10b; McLaughlin 2002b, p. 414, figure 2A–C; McLaughlin et al. 2007, p. 151, unnumbered figure; McLaughlin et al. 2010, p. 21.

Not Diogenes rectimanus – Lanchester 1902, p. 366. = Diogenes goniochirus Forest, 1956 and D. avarus Heller, 1865 .

Material examined

Haling Bay , Guandong Province, 20 ◦ 10.20 ′ N, 110 ◦ 56.40 ′ E, 10 m, sand, November 2007, one male (sl 5.5 mm; No. 10), CBM-ZC 10523; Shantou Bay, 23 ◦ 26.28 ′ N, 116 ◦ 53.41 ′ E, 10 m, mud, November 2007, one female (sl 5.5 mm; No. 11), CBM- ZC 10524 ; Leizhou Bay , Guandong Province, 21 ◦ 02.48 ′ N, 110 ◦ 39.54 ′ E, 10 m, sand, December 2006, one male (sl 5.7 mm), IOCAS-MBM 119740 ; Shantou Bay , 23 ◦ 21.26 ′ N, 116 ◦ 50.25 ′ E, 10 m, mud, one male (sl 5.3 mm), IOCAS-MBM 119741 .

Distribution

Gulf of Aden , India, Sri Lanka, Thailand, Torres Straight, Australia, China, Taiwan; intertidal to 36 m.

Remarks

Diogenes rectimanus is referred to the D. edwardsii species group ( Asakura and Tachikawa 2010), and is characterized by the following features: left chela with scattered stiff setae on outer surface, armed with sharp spines, forming longitudinal rows proximal to base of dactylus and on midline; carpi of second and third pereopods each with row of spinules on dorsal surface; propodi of third pereopod unarmed on dorsal margins; antennal peduncles clearly overreaching distal corneal margins; telson with spines continued onto lateral margins at least on left posterior lobe ( McLaughlin and Clark 1997; McLaughlin 2002b; McLaughlin et al. 2007). The present specimens from Chinese waters agree well with D. rectimanus in every diagnostic aspect, fully confirming the occurrence of this species in Chinese waters.