Erichsonius nanus (Horn, 1884)

Brunke, Adam J. & Marshall, Stephen A., 2011, Contributions to the faunistics and bionomics of Staphylinidae (Coleoptera) in northeastern North America: discoveries made through study of the University of Guelph Insect Collection, Ontario, Canada, ZooKeys 75, pp. 29-68 : 43-44

Erichsonius nanus (Horn, 1884)

Materials.

CANADA: PEI: Long Pond National Park, milieu marécageux (=marshy environment), 30-VII-1979, R. Sexton (2).

Diagnosis.

Erichsonius nanus can be recognized among the other densely punctate species in northeastern North America by its larger size (>4.4mm, from clypeus to abdominal apex), and the apical portion of the median lobe of the aedeagus, which is distinctly thin and sinuate in lateral view (Fig. 18).

This species is widely distributed and was previously known from Alaska, British Columbia, Illinois, Maine, Massachusetts, New Brunswick, New Hampshire, Newfoundland, New Jersey, New York, Northwest Territories, Nova Scotia, Ontario, Québec, Washington, Wisconsin ( Frank 1975),Virginia ( Frank 1981a), and Rhode Island ( Sikes 2003). Herein we newly report this species from Prince Edward Island (Map 22). Erichsonius nanus is found in a variety of habitats near water and can be collected in great numbers by sifting or treading the debris present there.