Capsaloides nairagi Yamaguti, 1968 (Figs 1 E, 2E)

Type­host: Makaira sp. ( Istiophoridae).

Type­locality: Hawaii, USA [Pacific Ocean].

Additional records: Tetrapterus angustirostris Tanaka, 1915, Hawaii, USA [Pacific Ocean] (see Yamaguti 1968).

Site: Gills.

Specimens examined: Holotype (USNPC 63599); 2 voucher specimens (NHM 1979.9.13.55­57).

Remarks

Capsaloides nairagi is most easily distinguished from other species in the genus by a zig­zagged row (see fig. 22 of Yamaguti 1968) of closely­spaced dorsomarginal body sclerites (Fig. 2 E) which extend to the posterior end of the body. In the holotype, the left isolated group of anterior dorsomarginal body sclerites comprises 6 sclerites each with 7– 10 cusps. The right isolated group of anterior dorsomarginal body sclerties comprises 10 sclerites, each with 3–6 cusps. The haptoral accessory sclerites (Fig. 1 E) are large with an elongate shaft. According to Yamaguti (1968), the egg is rhomboidal with an appendage at one end.