Green Nature

Cimbicid Sawflies: Trichiosoma

picture of a sawfly, trichiosoma

Seeing the Trichiosoma Triangular flying nearby might bring thoughts of relief that they belong to the Cimbicid sawfly family (Cimbicidae) rather than the wasp family.

They are an imposing species, over an inch in length, with equally long legs.

The relief stems from the fact that unlike wasps, sawflies do not sting. It might be short lived. Although they are not inclined to bite, Cimbicids have strong jaws that can, in a pinch, pinch anyone or thing in their path.

Along with their being the largest of the sawfly species, Cimbicids can be readily identified by the presence of clubbed antennae.

The top picture shows Trichiosoma triangulum with its conspicuous red abdomen. It's a native of the Pacific Northwest, east through Montana.

© 2009 Patricia A. Michaels