Culex ( Culex) iyengari n. sp., a New Species of Mosquito (Diptera, Culicidae) from the South Pacific

THIS IS AMEMBER of the Culex pipiensseries of Edwards (1932:208) and of a rather welldefined subgroup of that series which may be termed the Culex trifilatlts subgroup. The species included in this subgro up share with Culex pipiens the strongly bent ventral arm of the male phallosome (Fig . 1v.a.) but differ from it in the more stron gly developed outer division of the dorsal arm, which is here termed the basal arm (Fig . Ib .a.), and in having the tip of the inner division of the dorsal arm characteristically modified (Fig. Id .a.) . Thi s last modification is, however, less strongly marked in the Pacific species, other than C.pervigilans, than in those found elsewhere. C.pacificlts (Fig. Ib) is remarkable in exhibiting spicules on the ventral arm of the phallosome which are reminiscent of some of the banded-legged members of subgenus Culex . In addition to C. iyengari the group includes C. pervigilans Bergroth from New Zealand, C. pacificltS Edwards from New H ebrides , C. trifilatlts Edwards from East and South Africa and the Cameroons , C. tamsi Edwards from the island of Sao Tho me in the Gulf of Guinea, the northern Palaearctic C. torrentium Martini , and the eastern Palaearctic C. vagans Wiedemann. It thus furnishes a good example of a Palaearctic group having a southward exten sion down the East African highlands into South Africa and another, further east, into the Australasian region . It is entirely absent