Comprehensive Description

Read full entry

General Description

Approximately 6 to 14 mm in length, black and yellow body, with eye bare and face yellow. Distinguishing between S. vitripennis and S. ribesii is challenging, however S. ribesii has the bm cell with a small patch devoid of tiny hairs (i.e. not trichose, see A on image) (Gilbert 1986). However, male S. vitripennis are indistinguishable from male S. rectus. Yellow bands on tergites 3 and 4 are complete, curved posteriorly, and cover approximately half of the lateral margins (see B on image). Males: Hind femur is either brown to black, with only the apical one-quarter yellow (Vockeroth 1992).


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© University of Alberta Museums

Source: University of Alberta Museums

Belongs to 1 community


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!