Tachinus corticinus (Gravenhorst, 1802)

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 : 37

Tachinus corticinus (Gravenhorst, 1802)

Materials.

UNITED STATES: MA: Middlesex Co., Groton, 22-IV-2010, T. Murray (1).

Diagnosis.

Tachinus corticinus is easily distinguished from congeners in northeastern North America by the combination of: pronotum and elytra lacking microsculpture; pronotum with at least borders paler than head; female tergite eight with all lobes of similar size; male sternite seven without apical lobes; small size (3.00-3.75 mm from clypeus to apex of elytra).

This exotic species was first collected in North America in St. Cyrville, Québec in 1967 and was first recognized in North America by Campbell (1975). Since then it has been detected in Vermont, Pennsylvania ( Byers et al. 2000), Nova Scotia ( Schülke 2006), New Brunswick, Prince Edward Island ( Majka and Klimaszewski 2008a) and Ontario ( Brunke et al. 2009). Herein we record it as new for Massachusetts (Map 9). Tachinus corticinus is widespread in the Palaearctic region ( Smetana in Löbl and Smetana 2004) and has been collected in a variety of open and forested habitats. Although most individuals captured in Hannover, Germany were brachypterous ( Assing 1992), Levesque and Levesque (1995) found that nearly all individuals captured in Québec raspberry fields were fully winged. All specimens deposited in DEBU were found to be brachypterous but fully winged individuals do exist in Ontario as Tachinus corticinus was captured in small numbers in raised pan traps (A. Brunke unpublished data).