Munidion laterale Richardson, 1910

An, Jianmei, Boyko, Christopher B. & Yu, Haiyan, 2012, New records and hosts for three species of pseudionine bopyrids (Crustacea: Isopoda: Bopyridae) parasitizing munidid squat lobsters (Crustacea: Anomura: Munididae) in Philippine waters, Journal of Natural History 46 (45 - 46), pp. 2881-2888 : 2884-2885

Munidion laterale Richardson, 1910

( Figure 4 )

Munidion laterale Richardson, 1910: 36 , fig. 33; Nierstrasz and Brender à Brandis 1923: 70; Bourdon, 1968: 222; 1972a: 830; 1972b: 114–116, fig. 7; Markham, 1975: 437–439, figs. 24–28; Boyko et al. 2012: 7, 17, 19 (list).

Material examined

Infesting Paramunida scabra (Henderson, 1885) , Philippine waters, 14 ◦ 00’ N, 120 ◦ 17’ E, 175–184 m, 20 September 1985, coll. Yongliang Wang, ♀, (CI1083y01).

Philippine waters, 14 ◦ 00’ N, 120 ◦ 17’ E, 175–184 m, 20 September 1985, coll. Yongliang Wang, ♂ (CI1083y02).

Remarks

Richardson (1910) reported Munidion laterale from Philippine waters, but from an unidentified “galatheid” host. Bourdon (1972) later recorded this species from the Java Sea ( Indonesia), infesting Paramunida scabra (Henderson, 1885) . Markham (1975) reviewed the genus Munidion , and redescribed this species from the Philippine syntype pair [which he called “ holotype ” and “ allotype ” but which should be lectotype and paralectotype, as Richardson (1910) did not select one specimen as the holotype], but the host remained unidentified. The host of the present specimens is P. scabra , the same as that of Bourdon’s (1972b) specimens, and was collected from near the type locality of M. laterale , suggesting that the host of the types may also have been P. scabra . Note that Markham (1975) defined the genus Munidion as having a maxilliped without a palp. Richardson (1910) did not describe the maxilliped of M. laterale , but a small palp can clearly be seen in the drawing by Markham (1975: fig. 25E). The present females also have a distinct setose palp ( Figure 4D, E ), indicating that this particular character may not be useful at the generic level.

Figures

Figure 4. Munidion laterale Richardson, 1910. Female (CI1083y01), 8.79 mm (A–H): (A) dorsal view; (B) ventral view; (C) barbula; (D) right maxilliped, external view; (E) palp of maxilliped; (F) right oostegite 1, external view; (G) right oostegite 1, internal view. Male (CI1083y02), 2.09 mm (H–I): (H) dorsal view; (I) ventral view. Scale bars = 1 mm (A, B), 0.32 mm (C), 0.35 mm (D), 0.15 mm (E), 0.43 mm (F, G), 0.21 mm (H, I).