Pseudopaguristes McLaughlin, 2002

Rahayu, Dwi Listyo, 2005, Additions to the Indonesian fauna of the hermit crab genus Pseudopaguristes McLaughlin and a further division of the genus Paguristes Dana (Crustacea: Decapoda: Paguroidea: Diogenidae), Zootaxa 831, pp. 1-42 : 25

Genus Pseudopaguristes McLaughlin, 2002

Pseudopaguristes McLaughlin, 2002b: 186 ; Asakura & Kosuge, 2004: 66

Type species. Pseudopaguristes janetkae McLaughlin, 2002 , by original designation.

Diagnosis. Eight pairs of functional phyllobranchiate gills (no pleurobranchs on thoracic somites 5 and 8); arthrobranchs of third maxillipeds and chelipeds markedly reduced or absent; remaining gills bi­ or quadriserial. Rostrum usually well developed. Ocular acicles well developed, widely separated. Antennal peduncles with supernumerary segmentation; acicles moderately long, spinose. Antennal flagella of short to medium length, slightly shorter to slightly longer than carapace.

Mandible with smooth medial margin; palp 3­segmented. Endopod of maxillule with well developed, recurved external lobe. First maxilliped with setose epipod. Third maxilliped with crista dentata consisting of row of quite small teeth, no accessory tooth. Chelipeds subequal or unequal, sometimes dimorphic, dissimilar or similar; claws corneous, fingers opening in horizontal or oblique plane. Fourth pereopods with or without preungual process at base of dactylar claw. Fifth pereopods chelate.

Males with single or paired gonopores; unpaired or paired pleopods modified as gonopods on first and second pleomeres; unpaired, unequally biramous left pleopods on pleomeres 3 and 4, pleopod 5 uniramous. Females with paired gonopores or single gonopore on coxa of left third pereopod; paired, modified, uniramous pleopods on pleonal somite 1; following 3 pleomeres with unpaired, unequally biramous left pleopods; pleopod 5 with external ramus well developed, internal ramus rudimentary; brood pouch absent or present, sometimes represented by dense setae.

Uropods markedly asymmetrical. Telson with lateral incisions; posterior lobes slightly to markedly asymmetrical.

Remarks. Three species in the collection of the Muséum national d’Histoire naturelle, but not present in the Indonesian material have eight pairs of gills and are herein transferred to Pseudopaguristes : Paguristes calliopsis Forest & de Saint Laurent, 1968 (MNHN Pg 2379), Paguristes invisisacculus McLaughlin & Provenzano, 1974 (MNHN Pg 1854) and Paguristes laurentae Morgan & Forest, 1991 (MNHN Pg 4489).