Abstract

Entomophthora canadensis n. sp. is described and illustrated, and its morphological development traced. The new species differs from all other species of the genus, by its distinctively shaped conidia, long–elliptical to nearly cylindrical, average 25.0 μm × 10.0 μm, and its ornamented azygospores, verruculose to lightly rugulose, average 34.0 μm diameter. It is compared with E. aphidis, within which it has been included, and E. sphaerosperma, the species it most closely resembles.Entomophthora canadensis is currently known only from populations of the aphid Schizolachnus piniradiatae, in red pine plantations in Ontario, Canada.

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