Simulium (Nevermannia) chomthongense sp. nov. is described from female, male, pupal
and larval specimens collected from Doi Inthanon National Park and Doi Phahompok
National Park, Chiang Mai, Thailand. This new species, first reported as S.(Eusimulium) sp.
A, and later regarded as S.(N.) caudisclerum Takaoka & Davies, described from peninsular
Malaysia, is distinguished from S.(N.) caudisclerum in the male by the number of enlarged
upper-eye facets and the relative size of the hind basitarsus against the hind tibia and femur …

Simulium (Nevermannia) khunklangense sp. nov. is described from females, males, pupae
and larvae collected in Doi Inthanon National Park, Chiang Mai, Thailand. This new species
is placed in the vernum species-group of the subgenus Nevermannia and is similar to S.(N.)
chomthongense Takaoka & Srisuka described from Doi Inthanon National Park, Thailand,
but is distinguished in the male by the number of enlarged upper-eye facets and the relative
width of the hind basitarsus against the hind tibia and femur, and in the pupa by the short …