TWO NEW SPECIES OF SIMULIUM (SIMULIUM) (DIPTERA: SIMULIIDAE) FROM THAILAND

ABSTRACT

Two new black-fly species of the subgenus <I>Simulium</I> (<I>Simulium</I>) are described and illustrated, based on female specimens captured while approaching a human near a mountain summit in Doi Inthanon National Park, Chiang Mai Province, northern Thailand. The first species, <I>Simulium suchariti</I> sp. nov., is assigned to the <I>griseifrons</I> species-group and is distinguished from most other related species by the cibarium with tubercles near the base of its medial projection; the second, <I>S</I>. <I>setsukoae</I> sp. nov., is very similar to <I>S</I>. <I>rufibasis</I> of the <I>tuberosum</I> species-group but is distinguished from the latter by the shorter length of clustered stout hairs on the seventh abdominal segment and the ovipositor valve with its posteromedial corner widely bare.