Pagurina, Lemaitre & Felder & Poupin, 2017

Lemaitre, Rafael, Felder, Darryl L. & Poupin, Joseph, 2017, Discovery of a new micro-pagurid fauna (Crustacea: Decapoda: Paguridae) in the Lesser Antilles, Caribbean Sea, Zoosystema 39 (2), pp. 151-195 : 170

Genus Pagurina n. gen.

TYPE SPECIES. — Pagurina bifida n. gen., n. sp., by monotypy.

ETYMOLOGY. — The generic name is derived from the genus name Pagurus , and using the Latin feminine suffix - ina, which denotes something diminutive, in reference to the minute size of specimens in the single species of this new genus.

DISTRIBUTION. — Known only from the type species collected in Guadeloupe, Lesser Antilles, Caribbean Sea, at a depth of 10 m.

DIAGNOSIS. — Nine pairs of biserial phyllobranch gills, no pleurobranchs on somite XII (thoracomere 7, above pereopod 4). Rostrum subtriangular. Ischium with weak crista dentata, lacking accessory tooth. Chelipeds subequal. Sternite of somite XI (thoracomere 6, pereopod 3) with anterior lobe rectangular. Pereopod 4 with single row of scales on propodal rasp, dactyl lacking preungual process. Pereopod 5 semi-chelate. Male with paired gonopores, and unpaired left sexual tube on coxa of pereopods 5; with unpaired, left pleopods 3-5. Female conditions unknown. Telson nearly symmetrical, with lateral indentations; terminal margins oblique.

REMARKS

Although superficially Pagurina n. gen. might give the appearance that it could be placed in the catch-all genus Pagurus Fabricius, 1775 , a number of characters clearly indicate that it must be considered a separate genus. The three main characters that place this taxon outside of Pagurus , or any other known genus of Paguridae , are the number of gills (nine in Pagurina n. gen. vs 11 in most Pagurus ), the absence of an accessory tooth (present in Pagurus ) on the crista dentata, and presence of a short sexual tube (lacking in majority of Pagurus ).