抄録
Simulium (Gomphostilbia) chumpornense sp. nov. is described from reared adults, pupae and mature larvae collected from southern Thailand. This new species is assigned to the varicorne species-group within the subgenus Gomphostilbia by having the adult antennae composed of 2+8 segments in place of usual 2+9 segments. In addition, nine known simuliid species, most of which were described from Peninsular Malaysia, are recorded for the first time from Thailand, bringing the total number of simuliid species in this country to 40.
