Stenus (Stenus) pluto Casey, 1884

Webster, Reginald P., Davies, Anthony E., Klimaszewski, Jan & Bourdon, Caroline, 2016, Further contributions to the staphylinid fauna of New Brunswick, Canada, and the USA, with descriptions of two new Proteinus species (Coleoptera, Staphylinidae), ZooKeys 573, pp. 31-83 : 61

Taxon classification Animalia Coleoptera Staphylinidae

Stenus (Stenus) pluto Casey, 1884

Material examined.

New Brunswick, Albert Co., Caledonia Gorge P.N.A., 45.7930°N, 64.7764°W, 1.VII.2011, R.P. Webster // Small rocky clear cold river margin (Caledonia Creek), sifting drift material (tree bud material) near eddy area (1 ♂, RWC). Restigouche Co., Jacquet River Gorge P.N.A. 47.8256°N, 66.0770°W, 13.VIII.2010, R. P. Webster // Large shaded brook among cobblestones (1 ♀, RWC); Wild Goose Lake, 420 m elev., 47.8540°N, 68.3219°W, 7.VI.2011, R.P. Webster // Lake margin with emergent Carex and grasses, treading Carex and grasses (5 ♂, 2 ♀, RWC); Summit Lake, 47.7825°N, 68.3199°W, 7.VI.2011, R.P. Webster // Lake margin, Carex marsh, treading Carex hummocks and emergent vegetation (1 ♂, RWC).

Distribution in Canada and Alaska.

BC, SK, MB, ON, QC, NB ( Bousquet et al. 2013).

Natural history.

Most specimens of Stenus pluto were found along lake margins (two sites) with emergent vegetation ( Carex , Carex hummocks, and grasses). Adults were collected by treading vegetation into water. One specimen was sifted from drift material (tree bud material) near an eddy area along a small rocky, clear, cold river margin and another was found among cobblestones along a large shaded brook. This species was collected in June, July, and August in NB.