An Interpretation of the Phylogeny of the Eusimulism-Group (Diptera:Simuliidae) with Descriptions of Six New Species

Abstract

<p>The female, male, last stage larva and pupa of seventeen Ontario species of the Eusimulium-group are described, illustrated and keyed. Morphological and ecological knowledge of these and other species is used as a basis for interpreting the phylogeny within the group. This approach is extended, with the help of other representative species, to the derivation of a tentative phylogeny and zoogeography of the family Simuliidae. The finding from these studies contributed to the formation of a hypothesis of speciation.</p>