Atrecus americanus (Casey, 1906)

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 : 297-298

Atrecus americanus (Casey, 1906) Map 2

Material examined.

Additional New Brunswick records, Albert Co., Caledonia Gorge P.N.A. (Protected Natural Area), at Turtle Creek, 45.8432°N, 64.8411°W, 5.VII.2011, A. Fairweather, old hardwood forest (sugar maple and beech), in rotten log near creek (1, NBM); Caledonia Gorge P.N.A. at Caledonia Creek, 45.7935°N, 64.7760°W, 1.VII.2011, R. P. Webster, shaded, rocky, cold, clear brook, splashing moss on rocks (1, NBM). Carleton Co., Hovey Hill PNA, (Protected Natural Area), 46.1115°N, 67.7770°W, 19.VIII.2007, R. P. Webster, hardwood forest, under bark. (1, RWC); Jackson Falls, Bell Forest, 46.2208°N, 67.7211°W, 10.VII.2004, Vincent Webster & R. P. Webster, mixed forest, in bracket fungi (1, RWC); same locality and forest type but 46.2200°N, 67.7231°W, 13.VIII.2006, R. P. Webster, in decaying fleshy polypore fungi (1, RWC); same locality and forest type, 8-16.VI.2009, 16-21.VI.2009, 19-31.VII.2009, R. Webster & M.-A. Giguère, Lindgren funnel traps (3, AFC). Queens Co., Cranberry Lake PNA, 46.1125°N, 65.6075°W, 21-27.V.2009, 21-28.VII.2009, 28.VII-6 VIII.2009, R. Webster & M.-A. Giguère, mature red oak forest, Lindgren funnel traps (3, AFC). Restigouche Co., Berry Brook PNA, 47.8140°N, 66.7578°W, 26.V.2007, R.P. Webster, old-growth eastern white cedar swamp, in moss on hummock at base of cedar (2 ♂, RWC); Jacquet River Gorge PNA, 47.7491°N, 66.1114°W, 24.VI.2008, R. P. Webster, hardwood forest, under bark (1, NBM). Sunbury Co., Acadia Research Forest, 45.9799°N, 66.3394°W, 14.V.2007, R. P. Webster, mature red spruce and red maple forest, sifting deep conifer litter at base of large red spruce (1, AFC); Acadia Research Forest, 45.9866°N, 66.3841°W, 2-9.VI.2009, 21-29.VII.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 (3, AFC). York Co., Charters Settlement, 45.8300°N, 66.7360°W, 1.V.2004, R. P. Webster, mixed forest, under bark of conifer log (1, RWC); same locality data and collector but 21.VI.2004, mixed forest, under bark (1, RWC); same locality and collector but 45.8286°N, 66.7211°W, 10.VII.2005, mature red spruce and cedar forest, in bracket fungi (1 ♂, RWC); Fredericton, Odell Park, 7.IX.2005, 45.9570°N, 66.6695°W, R. P. Webster, old-growth hemlock forest, on bracket fungi (1, RWC); 15 km W of Tracy off Rt. 645, 45.6848°N, 66.8821°W,1-8.VI.2009, R. Webster & M.-A. Giguère, old red pine forest, Lindgren funnel trap (1, AFC); 14 km WSW of Tracy, S of Rt. 645, 45.6741°N, 66.8661°W, 10-26.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 trap (1, AFC).

Collection and habitat data.

Smetana (1982) reported this species from under bark of dead trees with one record from Fomitopsis pinicola (Swartz: Fr.) Karst. In New Brunswick, this species was found in various forest types, including hardwood, mixed red spruce ( Picea rubens Sarg.) and eastern white cedar ( Thuja occidentalis L.), and old-growth hemlock ( Tsuga canadensis (L.)). Adults were found under bark of both dead hardwood and conifer trees, in rotten logs, and in various species of polypore fungi (fleshy and bracket fungi). One adult was found in moss on a rock along a shaded brook. Adults were collected during May, June, July, August, and September.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Smetana 1982). Atrecus americanus was listed as occurring in New Brunswick by Majka et al. (2011) without any supporting references or data. Here, we provide the first documented records from New Brunswick.

Figures

Map 2. Collection localities in New Brunswick, Canada of Atrecus americanus.