Microsaurus canadensis, (Casey, 1915)

Webster, Reginald P., Smetana, Ales, Sweeney, Jon D. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick and an addition to the fauna of Quebec: Staphylininae, ZooKeys 186, pp. 293-348 : 303-304

Quedius (Microsaurus) canadensis (Casey, 1915) Map 14

Material examined.

Additional New Brunswick records. Carleton Co., Jackson Falls, Bell Forest, 46.2200°N, 67.7231°W, 18.IX.2006, R. P. Webster, mature hardwood forest, under bark of large, dead, standing basswood covered with bracket fungi (1 ♂, RWC); same locality, 4-12.VI.2008, 12-19.VI.2008, 5-12.VII.2008, 23-28.IV.2009, 9-14.V.2009, 14-20.V.2009, 9-16.VI.2009, R. Webster & M.-A. Giguère, mature hardwood forest, Lindgren funnel traps (2 ♂, 3 ♀, 6 sex undetermined, AFC, NBM, RWC). Charlotte Co., 10 km NW of New River Beach, 45.2110°N, 66.6170°W, 30.IV-17.V.2010, R. P. Webster & V. Webster, coll., old-growth eastern white cedar forest, Lindgren funnel trap (1, AFC). Queens Co., Cranberry Lake P.N.A., 46.1125°N, 65.6075°W, 24.IV-5 V.2009, R. Webster & M.-A. Giguère, mature red oak forest, Lindgren funnel traps (5, AFC, NBM). Restigouche Co., Jacquet River Gorge P.N.A., 47.8160°N, 66.0083°W, 14.VIII.2010, R. P. Webster, old eastern white cedar forest, in polypore fungi on Populus log (1, NBM); Dionne Brook P.N.A., 47.9030°N, 68.3503°W, 28.VII-9.VIII.2011, 9-23.VIII.2011, M. Roy & V. Webster, old-growth northern hardwood forest, Lindgren funnel trap (2, NBM); same locality and collectors but 47.9064°N, 68.3441°W, 27.VI-14.VII.2011, 9-23.VIII.2011, old-growth white spruce and balsam fir forest, Lindgren funnel traps (2, AFC, NBM). Sunbury Co., Acadia Research Forest, 45.9866°N, 66.3841°W, 28.IV-8.V.2009, 8-13.V.2009, 13-19.V.2009, 2-9.VI.2009, 29.VII-4.VIII.2009, R. Webster & M.-A. Giguère, mature (110 year-old) red spruce forest with scattered red maple and balsam fir, Lindgren funnel traps (1 ♂, 13 sex undetermined, AFC, RWC). York Co., Charters Settlement, 45.8395°N, 66.7391°W, 25-29.IV.2008, R. P. Webster, mixed forest, Lindgren funnel trap (1 ♂, RWC); 15 km W of Tracy, off Rt. 645, 45.6848°N, 66.8821°W, 25.IV-4V.2009, 4-11.V.2009, 11-19.V.2009, R. Webster & M.-A. Giguère, mature (120-180 year-old) red pine forest, Lindgren funnel traps (3 ♂, 4 sex undetermined, AFC, RWC); 14 km WSW of Tracy, S of Rt. 645, 45.6741°N, 66.8661°W, 26.IV-10.V.2010, R. Webster & C. MacKay, coll., old mixed forest with red and white spruce, red and white pine, balsam fir, eastern white cedar, red maple, and Populus sp., Lindgren funnel traps (2, AFC).

Collection and habitat data.

Little is known about the habitat associations of this species. Smetana (1973) reported a specimen from Polyporus betulinus (Bull.) Fr. In New Brunswick, one specimen was collected from under bark of a large, dead, standing basswood covered with bracket fungi (polypore fungi), one from under bark of a spruce log, and another in a polypore fungi on a Populus log. Many specimens were captured in Lindgren funnel traps deployed in a variety of forest types, including an old red pine ( Pinus resinosa Ait.) forest, a hardwood with sugar maple ( Acer saccharum Marsh.) and American beech ( Fagus grandifolia Ehrh.), an old-growth northern hardwood forest, a red spruce forest, an old-growth white spruce and balsam fir forest, a mixed forest, and an old eastern white cedar forest. These traps mimic tree trunks ( Lindgren 1983), and it is possible that this species lives in microhabitats associated with standing trees. Adults were collected in April, May, June, July, August, and September.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Smetana 1971a, 1973, 1978; Bishop et al. 2009). This species was previously known in New Brunswick from one specimen collected in Dalhousie during 1925 by Johansen ( Smetana 1971a).

Figures

Map 14. Collection localities in New Brunswick, Canada of Quedius canadensis.