Two species of cymothoid isopods were collected from the body surface of coastal perciform fishes in the western North Pacific Ocean off Shirahama, Wakayama Prefecture, central Japan: Nerocila phaio- pleura Bleeker, 1857 from a chub mackerel, Scomber japonicus Houttuyn, 1782 (Scombridae), and Nerocila japonica Schioedte and Meinert, 1881 from a Japanese seabass, Lateolabrax japonicus (Cuvier, 1828) (Lateo- labracidae). These isopods were previously reported from Pacific bluefin tuna, Thunnus orientalis (Tem- minck and Schlegel, 1844), and Kuromejina, Girella leonina (Richardson, 1846), respectively, farmed at Shirahama, and the present collections represent the first record for each species of cymothoid from wild fish in the prefecture.

和歌山県沿岸域の海水魚に寄生していた イワシノコバンとウオノコバン(長澤和也・白樫正・山本眞司)