A microsporidium species, not previously reported, was found infecting field populations of the alfalfa weevil, Hypera postica, in Illinois. The pathogen is widely distributed thoughout the state. Percent infection ranged from 1 % to 50% at different collection locations. Characteristics of the microsporidium and possible modes of transmission are presented.
Solter, Leellen F.; Roberts, Stephen J.; Maddox, Joseph V.; and Armbrust, Edward J.
"A New Microsporidium in Alfalfa Weevil Populations: Distribution and Characterization,"
The Great Lakes Entomologist, vol 26
Available at: https://scholar.valpo.edu/tgle/vol26/iss2/7