Simulium callipygium

Craig, Douglas A., Currie, Douglas C., Hunter, Fiona F. & Spironello, Mike, 2006, A taxonomic revision of the southwestern Pacific subgenus Hebridosimulium (Diptera: Simuliidae: Simulium), Zootaxa 1380 (1), pp. 1-90 : 18

callipygium species group

Diagnosis

Females: stem of genital fork relatively short and thick; medial edges of hypogynial valves concave, occasionally markedly so. Pupae: cocoons more slipper-shaped, basal edges flared laterally. Larvae: hypostomal hairs fewer than 9 per side; abdomen with or without pairs of dorsolateral tubercles; posterior abdomen callipygous; posterior circlet directed more ventrally, with fewer than 4,000 hooks.

Constituents: S. callipygium , S. banksi , S. johnfrumi , S. pankumuense , S. tuberculum .