Paguristes macrops Rahayu & Forest, 2009

Rahayu, Dwi Listyo & Osawa, Masayuki, 2012, Hermit crabs (Crustacea: Decapoda: Diogenidae) from the KUMEJIMA 2009 Expedition, Japan *, Zootaxa 3367 (1), pp. 176-190 : 185

Paguristes macrops Rahayu & Forest, 2009

( Fig. 1E )

Paguristes macrops Rahayu & Forest, 2009: 1317 , figs. 3, 4.

Material examined. 1 male 3.5 mm, Stn. Dredge 23, 26°16.380ʹN, 126°51.50ʹE, 12 November 2009, 125 m (RUMF-ZC-1648); 2 females, 1.0 mm, 2.5 mm, Stn. Dredge 79, 26°14.686ʹN, 126°49.623ʹE, 20 November 2009, 141– 165m ( NTOUA01223 ) .

Remarks. Paguristes macrops is characterized by having rounded red spot on each of the mesial and lateral faces of the meri of the chelipeds and second and third pereopods. This character is also seen in P. gonagrus (H. Milne Edwards, 1836) , Paguristes balanophylus Alcock, 1905 , Paguristes alcocki McLaughlin & Rahayu, 2005 , Paguristes lewinsohni McLaughlin & Rahayu, 2005 , Paguristes aulacis Rahayu & Forest, 2009 , and Paguristes ocellus Komai, 2010, but there are morphological and other colour differences among these species. The specimens in the present study agree well with the original description and the colouration of Paguristes macrops , but minor differences are noted: the ocular peduncles that are shorter than the shield, and the mesial face of the dactyl of each cheliped has only one longitudinal row of tubercles. The specimens collected (2.54, 3.45 mm in shield length) are smaller than the specimens examined by Rahayu & Forest (2009, 3.0– 9.1 mm in shield length), and too limited to evaluate whether these differences are only intraspecific variations or they warrant the separation of species.

Distribution. The Philippines and now recorded from Kume Island, Japan; 83– 165 m.

Figures

FIGURE 1. A, Dardanus brachyops Forest, 1962, female, 4.09 mm, Stn. Dredge 23; B, Diogenes holthuisi Asakura & Tachikawa, 2010, ovig. female 1.27 mm, Stn. Dredge 2; C, Diogenes leptocerus Forest, 1956, male, 2.4 mm, Stn. Intertidal 4 (right third pereopod missing); D, Diogenes pallescens, female ovig. 2.35 mm, Stn Dredge 44; E, Paguristes macrops Rahayu & Forest, 2009, male, 3.45 mm, Stn. Dredge 23 (left cheliped and right third pereopod missing); F, Pseudopaguristes laurentae Morgan & Forest, 1991, male, 2.54 mm, Stn. Dredge 78.