Family common name: common sawflies
Genus: Pachyprotasis Hartig, 1837
The Tenthredinidae are the most species-rich family and are found throughout the world, in all continents but Antarctica. They are known as the “common sawflies.” They can generally be recognized by a cylindrical body and long, segmented antennae. Otherwise, they come in a variety of colors, sizes, and forms (Goulet 1992).
Sawflies in the Tenthredininae subfamily are relatively large compared to others in the family, often with distinct colorful markings. Some are wasp-like with black and yellow stripes (Goulet 1992). Many species’ life histories are not known. Some Tenthredininae species feed uniquely, as adults, on flower pollen and other insects (Smith 1993). They can be distinguished from other subfamilies by wing venation (Goulet 1992).
Pachyprotasis can be confused with similar species in the subfamily Tenthredininae. It can be distinguished from most other genera by the expanded metepimeron, long labrum, and the centered anal crossvein. Pachyprotasis can be distinguished from closely related Macrophya by the longer fusion of anal veins and by the size of the eye as viewed form the side (Goulet 1992).
Pachyprotasis rapae feeds on Scrophularia (figwort), Solidago (goldenrod), Betonica (hedgenettle), Fraxinus (ash), and Anthirrhinum (snapdragons) (Goulet 1992).
North America: Pachyprotasis rapae occurs throughout Canada and the United States and in Chihuahua, Mexico (Smith 2003b).
Map data from: GBIF.org (29 October 2019) GBIF Occurrence Download Pachyprotasis
Details about data used for maps can be found here.