The immature stages of Simulium speculiventre,type-species of Stilboplax Enderlein (Diptera: Simuliidae)

Synopsis

The previously unknown immature stages of Simulium speculiventre are described and figured, and a lectotype is designated for this species from the adult syntypes. S. speculiventre is assigned to the subgenus Eusimulium (new subgeneric combination) and the genus-group name Stilboplax Enderlein is sunk in synonymy with Eusimulium Roubaud (new synonym).