Monday, September 21, 2020
Diastrophus kincaidii lays many eggs (as well as the chemical compound which forms the gall) into the stem of the thimbleberry. The galls first begin to show 10 days after the eggs are laid. The larvae enter diapause, emerging the following spring. Once emerged, the adults rarely ever fly. They typically wander the host plant until they find a mate and the cycle begins again.