TRECHUS QUADRISTRIATUS, A PALAEARCTIC SPECIES INTRODUCED INTO NORTH AMERICA (COLEOPTERA: CARABIDAE)

Abstract
Trechus quadristriatus (Schrank), a Palaearctic species, is reported for the first time from North America. The species is briefly described and compared with T. obtusus Erichson. The key to Trechus of Canada by Lindroth (1961: 192–194) is modified to include T. quadristriatus.