This study had as objective to verify the morphologic patterns that provide a correct diagnosis of Simulium (Chirostilbia) pertinax Kollar. The analysis of female and pupa morphology allowed to find characteristic structures that could be easily used to identify the species.Some diagnostic characteres (shield coloration, nudiocular area and paraprocto) show small variations and other are constant (leg coloration, cibarium, fork, branchial filaments and cocoon).
Simuliid; Neotropical; morphology; taxonomy
