Rugilus angustatus (Geoffroy, 1785)

Webster, Reginald P. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada: Paederinae, ZooKeys 186, pp. 273-292 : 283

Rugilus angustatus (Geoffroy, 1785) Map 14

Material examined.

New Brunswick, Carleton Co., Jackson Falls, Bell Forest, 46.2152°N, 67.7190°W, 1.VI.2005, M.-A. Giguère & R. Webster, upper river margin, collected with aerial net between 16:00 and 18:00 h (2 ♀, RWC); York Co., Canterbury, 45.8920°N, 67.6592°W, 8.VI.2004, D. Sabine & R. Webster, hardwood forest, wood pile, under bark (1 ♀, NBM); Charters Settlement, 45.8340°N, 66.7450°W, 27.IV.2005, 30.IV.2005, R. P. Webster, mixed forest, in wood pile, under (loose) bark of spruce (5 ♂, 2 ♀, RWC); Fredericton, at Saint John River, 45.9588°N, 66.6254°W, 7.VI.2005, R. P. Webster, river margin in flood debris (1 ♀, NBM); Fredericton, Odell Park, 45.9570°N, 66.6695°W, 19.VI.2005, R. P. Webster, compost (with) wood chips and decaying plant material (1 ♂, NBM); Fredericton, 45.9361°N, 66.6747°W, 17.VIII.2009, R. P. Webster, beaver dam, outer margin under over-hanging sticks near water (1 ♂, RWC).

Collection and habitat data.

In the Palaearctic region, Rugilus angustatus occurs under decaying organic matter along forest borders and watercourses and in meadows ( Hoebeke 1995). In New Brunswick, adults of this adventive species were found along river margins, in hardwood and mixed forests, and in a beaver dam. Adults were found under loose bark in wood piles, among composted wood chips and decaying plant material, under overhanging sticks on the outer margin of a beaver dam, and in flood debris on a river margin. Two individuals were collected with an aerial net during evening flight (16:00-18:00 h) on a river margin. Adults were collected during April, June, and August.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Campbell and Davies 1991; Hoebeke 1995).