Taxon classification Animalia Coleoptera Staphylinidae

Stenus (Stenus) comma comma LeConte, 1863*

Material examined.

New Brunswick, 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 sand/mix (3 sex undetermined, RWC); Jacquet River Gorge P .N.A., 47.8257°N, 66.0780°W, 24.V.2010 R. P. Webster // margin of Jacquet River, clay bank on bare clay (3 sex undetermined, NBM; 1 sex undetermined, RWC); Sport Camp Brook, 47.9582°N, 68.0183°W, 30.VII.2012, R.P. Webster & M. Turgeon // Logging road through spruce & cedar forest, on mud/clay of dried puddle on roadside (1 sex undetermined RWC). York Co., Keswick River at Rt. 105, 45.9943°N, 66.8337°W, 18.VI.2004, R.P. Webster // River margin, splashing on clay/sand mix on steep bank (5 sex undetermined, RWC).

Distribution in Canada and Alaska.

AK, YK, NT, BC, AB, SK, MB, ON, QC, NB (Bousquet et al. 2013).

Natural history.

Most adults of Stenus comma comma were found along river margins on (often steep) clay banks, on bare clay, under debris on clay/sand mix, and by splashing clay/sand mix on a steep bank. One individual was found on mud/clay in a dried puddle on a logging road. Specimens were collected during May, June, and July.