Scaphidium quadriguttatum Say, 1823

Webster, Reginald P., Sweeney, Jon D. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada: Scaphidiinae, Piestinae, Osorinae, and Oxytelinae, ZooKeys 186, pp. 239-262 : 240

Scaphidium quadriguttatum Say, 1823 Map 1

Material examined.

New Brunswick, Queens Co., Cranberry Lake P.N.A. (Protected Natural Area), 46.1125°N, 65.6075°W, 22-29.VI.2009, M. Roy & V. Webster, old red oak forest, Lindgren funnel trap (1 ♂, RWC). Restigouche, Co., Dionne Brook P.N.A., 47.9064°N, 68.3441°W, 27.VI-14.VII.2011, M. Roy & V. Webster, old-growth white spruce and balsam fir forest, Lindgren funnel trap (1, NBM). York Co., Charters Settlement, 45.8406°N, 66.7321°W, 8.VI.2003, R. P. Webster, mixed forest, on foliage (1, RWC); 14 km WSW of Tracy, S of Rt. 645, 45.6741°N, 66.8661°W, 10-26.V.2010, R. Webster & C. MacKay, old mixed forest with red and white spruce, red and white pine, balsam fir, eastern white cedar, red maple, and Populus sp., Lindgren funnel trap (1, AFC).

Collection and habitat data.

Scaphidium spp. are associated with old logs and polypore fungi ( Newton et al. 2000). In New Brunswick, one individual of S. quadriguttatum was collected from foliage (beating) in a mixed forest, and others were captured in Lindgren funnel traps deployed in an old (180-year-old trees) mixed forest, an old red oak ( Quercus rubra L.) forest, and an old-growth balsam fir ( Abies balsamsea (L.) Mill.) and white spruce ( Picea glauca (Moench) Voss) forest. Adults were collected during May, June, and July.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Campbell 1991; Bishop et al. 2009).