Explanation of Names
Euschistus variolarius (Palisot de Beauvois 1805)
The only reliable way to separate variolarius from servus is a ventral view. The males of the one-spot stinkbug (E. variolarius) have one big spot on the pygophore; servus, none.
The females are differentiated by a small dark spot on the anterior corner on the edge of each abdominal segment in servus (no spot in variolarius); sometimes you can see it on the dorsal view. (D.B. Thomas, pers. comm. to =v=, 11/05/09)
across Canada (QC-BC) to FL-UT(1)
polyphagous (recorded from over two dozen spp. in 15 plant families)(2)
minor pest of vegetables and fruit/buds(3)