Trichiosoma triangulum pupae have previously been found only beneath the ground. However, a pupa of T. triangulum was collected from a sapling in Michigan in the Fall of 1971. This find may indicate a need to revise the life history as it is now understood.
Proceedings of the Iowa Academy of Science
© Copyright 1973 by the Iowa Academy of Science, Inc.
Burch, Betty J.
"Notes on the Pupation of the Sawfly, Trichiosoma triangulum (Hymenoptera),"
Proceedings of the Iowa Academy of Science, 80(2), 59-59.
Available at: https://scholarworks.uni.edu/pias/vol80/iss2/7