Quedius cinctus (Paykull, 1790)

Brunke, Adam J. & Marshall, Stephen A., 2011, Contributions to the faunistics and bionomics of Staphylinidae (Coleoptera) in northeastern North America: discoveries made through study of the University of Guelph Insect Collection, Ontario, Canada, ZooKeys 75, pp. 29-68 : 50

Quedius cinctus (Paykull, 1790)

Materials.

CANADA: ON: Wellington Co., Guelph, University Arboretum, rotting Polyporus squamosus , 29-VI-2008, A. Brunke (2); Guelph, University campus nr. horse pen, grass sweep, 13-VII-2008, C. Ho (1).

Diagnosis.

This species may be separated from other northeastern Quedius by the combination of: elytra with three rows of coarse punctures on the disc; head without a pair of punctures between the ocular punctures; pronotum with three punctures in each dorsal row (Fig. 12).

This Palaearctic species was first detected in North America by Smetana (1971) based on specimens collected in Massachusetts. It was subsequently recorded from New Jersey, New York and Washington by Smetana (1990), and New Hampshire by Chandler (2001). Ithas been present in North America since at least 1942 based on a collection in New Jersey and was introduced to the west coast (Washington) as early as 1979 ( Smetana 1990). Majka et al. (2009) newly recorded it from Canada (New Brunswick) based on specimens collected on carrion. We here newly report Quedius cinctus from Ontario (Map 35). In its native range, Quedius cinctus is widespread in the Palaearctic region ( Smetana in Löbl and Smetana 2004). This species frequents disturbed habitats throughout its range and is typically attracted to decaying organic matter; the Ontario specimens were found in a Polyporus fungus in an almost liquid state of decay.