Pseudopaguristes hians ( Henderson, 1888 )

Rahayu, Dwi Listyo, 2022, Hermit crabs of Singapore (Crustacea: Decapoda: Anomura: Diogenidae, Paguridae), with description of two new species, Raffles Bulletin of Zoology 70, pp. 329-363 : 351

Pseudopaguristes hians ( Henderson, 1888)

Paguristes hians Henderson, 1888: 79 , pl. 8, fig. 4 (type locality: off Manila, Philippines); Alcock, 1905b: 40, pl. 3, fig. 2; McLaughlin & Clark, 1997: 46, fig. 14; McLaughlin, 2002a: 393.

Diogenes desipiens Lanchester, 1902: 366 , pl. 34, fig. 1, 1a (type locality: Pulau Bidan , Penang, Malaysia).

Not Paguristes hians Grant & McCulloch, 1906: 33 . [= Pseudopaguristes monoporus (Morgan, 1987) ]

Pseudopaguristes hians ; Rahayu, 2005: 32, fig. 12.

Material examined. 1 male, 3.3 mm ( ZRC 2021.0226 ), Pulau Jong, dive, 21 December 2012 ; 2 males, 2.9–3.6 mm ( ZRC 2021.0227 ), Pulau Jong, dive, 6 m, 15 September 2012 ; 1 male, 3.3 mm, 1 ovigerous female, 2.9 mm ( ZRC 2021.0228 ), Pulau Jong, 1 October 2012 .

Colour. McLaughlin (2002a) recorded the colouration in preservative of the specimen from Phuket, Thailand.

Distribution. Red Sea, Oman, Maldives, Arabian Sea, Indonesia, Singapore, Malaysia, and the Philippines, subtidal, 6–51 m depth, on reef and rubbles.

Remarks. This species has been rather rarely collected, easily recognisable by the short and broad antennal acicles that never reach the distal end of the fifth peduncular segment, the greatly reduced male first pleopods, and the absence of the male second pleopods. The specimens examined agree well with the redescription of the species by McLaughlin & Clark (1997) and Rahayu (2005).