Olophrum rotundicolle (C. R. Sahlberg, 1830)

Webster, Reginald P., Sweeney, Jon D. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada: Omaliinae, Micropeplinae, Phloeocharinae, Olisthaerinae, and Habrocerinae, ZooKeys 186, pp. 7-29 : 11

Olophrum rotundicolle (C. R. Sahlberg, 1830) Map 9

Material examined.

New Brunswick, Kent Co., Kouchibouguac Nat. Park, 20.IX.1978, J, J. Miller (1 ♂, CNC). Madawaska Co., Loon Lake, 236 m elev., 47.7839°N, 68.3943°W, 21.VII.2010, R. P. Webster, boreal forest, small lake surrounded by sedges, treading sedges and grasses near Myrica gale bushes into water (2, RWC). Restigouche Co., Little Tobique River near Red Brook, 47.4462°N, 67.0689°W, 13.VI.2006, 24.V.2007, R. P. Webster, old growth eastern white cedar swamp, in moss and leaf litter near brook (1, RWC); MacFarlane Brook P.N.A, 47.6018°N, 67.6263°W, 25.V.2007, R. P. Webster, old growth eastern white cedar swamp, in moss near brook (3, NBM, RWC); Jacquet River Gorge P.N.A. 47.8200°N, 66.0015°W, 13.V.2010, R. P. Webster, under alders near brook in Carex marsh, in leaf litter and moss (1 ♀, NBM). Saint John Co., Bains Corner, 45.3223°N, 65.6663°W, 26.V.2006, R. P. Webster, eastern white cedar swamp, in moss (wet) and leaf litter (1, RWC). Victoria Co., 4.0 km NE of Black Brook, 47.3755°N, 67.0100°W, 27.VIII.2004, D. Sabine & R. P. Webster, coll., calcareous eastern white cedar fen, in drainage ditch with sphagnum and sedges (1, RWC). York Co. Charters Settlement, 45.8267°N, 66.7343°W, 30.IV.2005, 23.V.2005, 21.V.2007, R. P. Webster, Carex marsh, treading Carex hummocks with sphagnum into water (1 ♂, 4 sex undetermined, NBM, RWC).

Collection and habitat data.

This Holarctic species has been collected from moss and Carex hummocks, along lake, stream, and bog margins, from floating debris on streams, and in moist Salix and Alnus spp. litter ( Campbell 1983b). Most specimens from New Brunswick were collected from moss, sphagnum, and leaf litter in and near eastern white cedar swamps and in Carex marshes. Adults were collected by sifting moss and litter or treading Carex hummocks and vegetation into water. This species was collected during April, May, June, July, and August.

Distribution in Canada and Alaska.

AK, YT, NT, BC, AB, SK, MB, ON, QC, NB, NS, LB, NF ( Campbell 1983b; CNC specimens).