Xantholinus elegans (Olivier 1795)

Brunke, Adam J. & Majka, Christopher G., 2010, The adventive genus Xantholinus Dejean (Coleoptera, Staphylinidae, Staphylininae in North America: new records and a synthesis of distributional data, ZooKeys 65, pp. 51-61 : 53

Xantholinus elegans (Olivier 1795)

Staphylinus elegans Olivier 1795: 19; as Xantholinus elegans : Smetana in Löbl and Smetana 2004.

Materials.

All specimens studied are deposited in DEBU

CANADA: ONTARIO:Peterborough County: 5 Km SW of Marmora, under fresh horse dung, 31-VII-2010, A. Brunke (1).Waterloo Region: Blair, Rare Charitable Research Reserve, near Whistlebare Rd., soybean field, pitfall trap, 27-VII-2010, A. Brunke (1); Wellington County: Arkell, Arkell Research Station, under loose sod beside canola field, 20-VII-2007, A. Brunke (1); Eramosa, Eramosa Rd. and Wellington Rd. 29, soil in agricultural field, corn in previous year, 8-VI-2010, A. Brunke (1); Eramosa, Eramosa Rd. and Wellington Rd. 29, soybean field, pitfall trap, 13-VII-2010, A. Brunke (1); Eramosa, Eramosa Rd. and Wellington Rd. 29, soybean field, pitfall trap, 10-VIII-2010, A. Brunke (1); Guelph, Gordon St. and Wellington Ave, on sidewalk near dry field, 23-VIII-2008, A. Brunke and D.K.B. Cheung (1); Guelph, Arboretum, woods edge in leaf litter, 11-IX-2008, M. Bergeron, S. Paeiro and D.K.B. Cheung, (1); Guelph. University of Guelph campus, under rocks, 22-VII-2009, C. Ho and S.P.L. Luk, (2); Guelph, Victoria Rd. and Conservation Line, soybean field, pitfall trap, 4-VIII-2009, A. Brunke, (1). Guelph, Stone Rd., heavily disturbed forest edge under rock, coll. as larva 10-IV-2010, emerged 15-V-2010, A. Brunke (1).

Xantholinus elegans is newly recorded from North America based on the above specimens collected near Guelph and near Marmora, Ontario, Canada (Fig. 1). Dissected specimens key out to Xantholinus jarrigei Coiffait in Coiffait (1972), a species synonymized with Xantholinus elegans (Olivier) by Drugmand (1994).The aedeagus is illustrated in Fig. 2 and those of the other two species were illustrated by Smetana (1982). Most specimens were found in strongly disturbed areas and all individuals were brachypterous. One larva was found under a rock at the edge of a disturbed woodlot in April 10, 2010 and was subsequently reared to an adult on May 15th. The larva was provided with soil from the collection site which included oribatid mites and early-instar Oniscus asellus , although the larva was never observed to feed.