Erichsonius alumnus Frank, 1975**

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 : 314

Erichsonius alumnus Frank, 1975** Map 31

Material examined.

New Brunswick, Charlotte Co., ca. 9 km NW of New River, 45.2067°N, 66.6505°W, 13.VI.2008, R. P. Webster, alder swamp near large brook, treading vegetation along brook margin (1 ♀, NBM). Restigouche Co., Little Tobique River near Red Brook, 47.4465°N, 67.0689°W, 13.VI.2006, R. P. Webster, river margin, under debris on clay and sand mix (3 ♂, 5 sex undetermined, RWC). York Co., Charters Settlement, 45.8404°N, 66.7360°W, 27.V.2008, R. P. Webster, brook margin partially shaded by alders, among cobblestones and gravel (1 ♂, RWC); near Mazerolle Settlement, N of Hwy 2 near exit 271, 45.8764°N, 66.8260°W, 7.VI.2008, R. P. Webster, brook margin in beaver meadow, in fine gravel/clay mixed with grass (1 ♂, RWC); 8.4 km W of Tracy, off Rt. 645, 45.6821°N, 66.7894°W, 14.V.2008, R. P. Webster, alder swamp near brook, in leaf litter and grass on hummock (1, NBM).

Collection and habitat data.

Erichsonius alumnu s appears to be a riparian species associated with river and brook margins. Records in Frank (1975) included individuals from banks of streams, on mud by a brook, and an individual collected by treading mud by a stream. In New Brunswick, the largest series was collected along a river margin under debris on a sand-clay mix. Other adults were collected from brook margins in alder swamps and a beaver meadow. Adults occurred in grass litter mixed with fine gravel and clay, among cobblestones and gravel, and leaf and grass litter from these brook margin habitats. This species was collected in May and June.

Distribution in Canada and Alaska.

ON, QC, NB ( Frank 1975).

Figures

Map 31. Collection localities in New Brunswick, Canada of Erichsonius alumnus.