Procepon insolitum Shiino, 1937

Procepon insolitum Shiino, 1937 View in CoL

( Fig. 5 View FIGURE 5 )

Procepon insolitum Shiino, 1937: 480–486 View in CoL , figs. 3–5 (Hatekeshima, Tanabe Bay, Japan, infesting “ Gebia major View in CoL ” (= Upogebia major (De Haan, 1841) View in CoL ; Shiino, 1958: 49–50, pl. 3 fig. 5, text fig. 11 (Sugashima, Mie Prefecture, Japan, infesting U. issaeffi (Balss, 1913) View in CoL ; Bourdon, 1967: 167 (mention); Bourdon, 1968 82 (mention); Shiino, 1972: 8 (list); Markham, 1985: 28, 29, fig. 13 ( Phuket, Thailand, infesting U.cf. lincolni View in CoL Ngoc-Ho, 1977); Markham, 1988: 17 (mention); Markham, 1990: 556 (mention); Saito et al., 2000: 43 (list); Kensley, 2001: 225 (list); Markham, 2001: 199, 201 (list); Itani, 2004a: 14, 15, figs. 1, 2, 4 ( Japan, infesting Upogebia sp. ); Itani, 2004b: 38 ( Japan, infesting U. carinicauda (Stimpson, 1860) View in CoL , U. major View in CoL , and U. yokoyai Makarov, 1938 View in CoL ); An et al., 2009: 242 (mention); Chapman et al., 2011: 1228 (mention); Itani et al., 2014: 111 (mention); Sato et al., 2021: 20, 21, fig. 3B (Ariake and Yatsushiro Seas, Kyushu, Japan, infesting U. major View in CoL ).

“ Bopyrus View in CoL in left gill chamber”— Sakai, 2006: 141454 (SMF 30541).

Material Examined: Japan: Mature female ( 10.5 mm) ( SMF 58107) and mature male ( 4.2 mm) ( SMF 58107), infesting left branchial chamber of female Upogebia yokoyai Markarov, 1938 ( 12.9 mm CL), mature female ( 9.2 mm), infesting right branchial chamber of female U. yokoyai (12.0 mm CL), Umino-nakamuchi, Irimote-jima, Ryukyu Islands, coll. K. Sakai, 14 Feb 1995 ( SMF 30541).

Hosts: Upogebia carinicauda (Stimpson, 1860) , U. issaeffi (Balss, 1913) , U. cf. lincolni Ngoc-Ho, 1977, U. major (De Haan, 1841) , and U. yokoyai Makarov, 1938 (see Markham 1985; Itani 2004).

Remarks: Upogebia yokoyai was first reported as a host for Procepon insolitum by Itani (2004). SMF 30541 contains three males (9.9–14.0 mm CL), eight females ( 7.8–12.5 mm CL), and one ovigerous female ( 11.2 mm CL); Sakai (2006: 145) stated that one female was infested but the total is two infested females. The female ( Fig. 5A, B View FIGURE 5 ) and male ( Fig. 5C, D View FIGURE 5 ) specimens match closely the original description of Procepon insolitum ( Shiino, 1937) .