Larvae of the alfalfa weevil, Hypera postica, were infected by an in vitro colony of Zoophthora phytonomi. Two spore types (infective conidia, and resting spores) were produced from infection trials. The spore type produced may be influenced by the physiological state of the larvae. Trials using field collected larvae which would produce diapausing adults formed both conidia and resting spores. Trials using larvae from a nondiapausing colony, however, formed only resting spores.
Roberts, S. J.; Maddox, J. V.; and Armbrust, E. J.
"A Laboratory Infection of Alfalfa Weevil, Hypera Postica (Coleoptera: Curculionidae), Larvae With the Fungal Pathogen Zoophthora Phytonomi (Zygomycetes: Entomophthoraceae),"
The Great Lakes Entomologist, vol 27
Available at: https://scholar.valpo.edu/tgle/vol27/iss1/3