A new species of black fly in the Simulium (Simulium) melanopus species-group (Diptera: Simuliidae) from Sarawak, Malaysia

Simulium (Simulium) puehense sp. nov. is described based on a female and its pupal exuviae and cocoon collected from Sarawak, Malaysia. This new species is assigned to the S. melanopus species-group and is characterized in the female by the haired basal portion of the radial vein, and in the pupa by the frons densely covered with tubercles, relatively stout facial and thoracic trichomes, and cocoon shoe-shaped with a few small open spaces anteriorly.

Taxonomic notes are given to separate this new species from related species. This is the tenth member of the S. melanopus species-group in Borneo. Keys to identify all 10 species in the S. melanopus species-group in Borneo are provided.