Simulium (Simulium) atipornae Takaoka, Srisuka & Choochote, 2014

Simulium (Simulium) atipornae Takaoka, Srisuka & Choochote, 2014:725 –731 (Female, male, pupa and larva).

Specimen examined. One pharate male collected from a slow-flowing forest stream (width 10–20 cm, depth 5–30 cm, water temperature 14.0˚C, shaded, altitude 1,273 m) (16˚11’42.061”N/107˚51’27.955”E), Bach Ma National Park, Phu Loc, Thua Thien Hue Province, central Vietnam, 23-II-2014, by H. Takaoka, M. Sofian-Azirun, Z. Ya’cob, C.D. Chen & K.W. Lau.

Distribution. Thailand and Vietnam (New record).

Remarks. Simulium (S.) atipornae is characterized in the female by the claw with a small subbasal tooth, ovipositor valve triangular with its inner margin nearly straight and its surface covered with many short to mediumlong hairs; in the male by the style with a short subbasal protuberance and ventral plate Y-shaped with a toothed posterior margin; and in the pupa by the head and thoracic integument almost bare, gill with six filaments, and cocoon with anterolateral windows (Takaoka et al. 2014e).

The pharate male dissected from its pupal case collected from Bach Ma National Park agrees morphologically with the original description (Takaoka et al. 2014e).

This species is a new record from Vietnam.