Eremitione calcinii ( Shiino, 1958 ) Williams & Boyko & Madad, 2019

Williams, Jason D., Boyko, Christopher B. & Madad, Asma Z., 2019, Branchial parasitic isopods (Crustacea: Isopoda: Bopyridae: Pseudioninae) of hermit crabs (Crustacea: Decapoda: Diogenidae) from the western Pacific, with descriptions of a new genus and three new species, Raffles Bulletin of Zoology 67, pp. 83-118 : 110

Eremitione calcinii ( Shiino, 1958) , new combination

(Fig. 16A–E)

Pseudione calcinii Shiino, 1958: 36–37 , fig. 4 [Seto, Japan; infesting Calcinus latens (Randall, 1840) ]; Danforth, 1971: 101 (mention); Shiino, 1972: 7 (list); Saito et al., 2000: 37 (list); Markham, 2003: 72 (list); Boyko & Williams, 2004: 364–365 (mention); Williams & Schuerlein, 2005: 106 (mention); Madad, 2008: 5, 19, 44, 51, 82, 83, fig. fig. 7G (reexamination of holotype); McDermott et al., 2010: 9 (list); Williams & Boyko, 2016: 35 (list).

Material examined. Japan: 1 sinistral mature holotype ♀ (2.3 mm) (NSMT-Cr 14473) from left branchial chamber of Calcinus latens (host not in jar), Seto , Japan, coll. S. M. Shiino.

Type locality. Shiino (1958) did not state where in Japan the specimen was collected but the original data label clearly states that it was collected in Seto .

Distribution. Seto, Japan.

Host. Calcinus latens (Randall, 1840) .

Remarks. Eremitione calcinii , new combination is known only from the holotype female (NSMT-Cr 14473), examination which allowed us to confirm all of the characters described by Shiino (1958), e.g., the shape of oostegite 1 (Fig. 16E). We were also able to add to the description of the species by describing and illustrating the few important parts that Shiino (1958) omitted from his description: Antennules of 2 articles each; antennae of 3 articles each, basal articles of antennae fused with each other (Fig. 16A); barbula with 2 smooth, distally rounded lateral lobes, lateralmost lobe more than two times as large as medial lobe, medial region smooth (Fig. 16B); pereopods subequal in shape and size (Fig. 16C, D).