New species and distributional records of Aleocharinae (Coleoptera, Staphylinidae) from Ontario, Canada, with a checklist of recorded species Author Brunke, Adam J. Author Klimaszewski, Jan Author Dorval, Julie-Anne Author Bourdon, Caroline Author Paiero, Steven M. Author Marshall, Stephen A. text ZooKeys 2012 186 119 206 http://dx.doi.org/10.3897/zookeys.186.2947 journal article http://dx.doi.org/10.3897/zookeys.186.2947 1313-2970-186-119 Aleochara (Xenochara) tristis Gravenhorst, 1806 New Ontario Record Fig. 4Map 4 genitalia in Klimaszewski (1984) Material examined. CANADA: ON:Wellington Co., Guelph, field, 20.ix.1984, Brian Wisenden, 1 (DEBU). Distribution. Canada: ON, QC, NB, NL; USA: CA, MN, NE, PA, VT. Widespread in Palaearctic, Oriental and Afrotropical Regions ( Horion 1967 ; Moore and Legner 1975 ; Klimaszewski 1984 ; Klimaszewski and Cervenka 1986 ; Byers et al. 2000 ; Smetana 2004 ; Klimaszewski et al. 2005b ; Klimaszewski et al. 2011 ). Adventive in Canada. Comments. Aleochara tristis was intentionally released in the United States in 1965 to control populations of Face Fly ( Musca autumnalis DeGeer), a nuisance pest of and disease vector for livestock, which breeds in their dung ( Jones 1967 ). In terms of biological control, the introduction appears to be a failure as this species is rarely collected and only as singletons. However, it is most certainly established in northeastern North America at low densities ( Klimaszewski et al. 2005b , this study).