tenthredinid sp.

This is a tenthredinid sawfly. There are more than 730 species in this family. The larvae resemble caterpillars. Females have saw-like ovipositors that are used to cut into plant material to lay their eggs. These common sawflies are typically found in meadows and in forests near streams. 

Order: Hymenoptera
Family: Tenthredinidae

Photograph: © 2004 RKD Peterson
Date of Photograph: 23 June 2004
Location: Montana, Gallatin Co. (45o25'24" N 111o10'32" W)