A new species of Simulium (Diptera: Simuliidae) from open areas in Central Amazonia, Brazil

RESUMO

The larva, pupa, male and female of Simulium daltanhani n.sp. are described and illustrated. This species shares diagnostic characteristics with Simulium quadrifidum Lutz, Simulium cauchense Floch & Abonnenc, Simulium brevifurcatum Lutz and Similium siolii Py-Daniel. It was collected in three countries (Manaus, Presidente Figueiredo and Itacoatiara) in the State of Amazonas, Brazil. Its habitat includes streams in disturbed, open areas where the forest has been cut for road constuction; it was not collected in adjacent forested streams, suggesting that it colonizes disturbed habitats. The larval subesophageal ganglion i discussed as a useful character, when pigmented, to distinguish this species within a limited geographic area.