Erichsonius rosellus 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 : 317

Erichsonius rosellus Frank, 1975** Map 36

Material examined.

New Brunswick, Charlotte Co., near Clark Ridge, 45.3155°N, 67.4406°W, 27.V.2007, R. P. Webster, beaver pond, treading vegetation (1, RWC). Restigouche Co., Jacquet River Gorge P.N.A., 47.7357°N, 66.0774°W, 24.VI.2008, R. P. Webster, beaver pond margin, among leaves and sedges (1 ♂, RWC). Sunbury Co., Maugerville, Portobello Creek N.W.A., 45.8992°N, 66.4248°W, 5.VI.2004, R. P. Webster, silver maple swamp, in leaf litter on margin of small pond (1 ♂, RWC). York Co. 8.5 km W of Tracy, off Rt. 645, 45.6821°N, 66.7894°W, 6.V.2008, R. P. Webster, wet alder swamp in leaf litter and grass on hummock (1 ♂, RWC); Fredericton, University of New Brunswick Woodlot, 45.9116°N, 66.6698°W, 26.V.2008, R. Webster, G. Forbes, & M.-A. Giguère, abandoned beaver lodge occupied by muskrats, in roof of lodge (3 ♂, 1 sex undetermined, RWC); University of New Brunswick Woodlot, 45.9391°N, 66.6747°W, 17.VIII.2009, R. Webster, D. McAlpine, & G. Forbes, in beaver lodge, within wall of lodge (1 ♂, RWC).

Collection and habitat data.

Almost nothing was previously known about the habitat associations of this species. The only record with habitat data reported in Frank (1975) included a specimen collected from a "pool seep". In New Brunswick, adults were found in leaf litter in wet habitats, such as beaver pond margins, a pond margin in a silver maple swamp, and a wet alder swamp. This species was also found in the walls of both a beaver lodge and an abandoned beaver lodge occupied by muskrats. Adults were collected in May, June, and August.

Distribution in Canada and Alaska.

ON, QC, NB ( Frank 1975).

Figures

Map 36. Collection localities in New Brunswick, Canada of Erichsonius rosellus.