Trigonodemus striatus LeConte, 1863

Webster, Reginald P., Sweeney, Jon D. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada: Omaliinae, Micropeplinae, Phloeocharinae, Olisthaerinae, and Habrocerinae, ZooKeys 186, pp. 7-29 : 12

Trigonodemus striatus LeConte, 1863 Map 11

Material examined.

New Brunswick, Carleton Co., Meduxnekeag Valley Nature Preserve, 46.1897°N, 67.6710°W, 26.IX.2007, 12.IX.2008, R. P. Webster, mature mixed forest (with many white pine), on Pholiota species at base of dead black cherry and base of dead Populus species (6, RWC). Charlotte Co., near New River, 45.2122°N, 66.6160°W, 22.IX.2006, R. P. Webster, (old growth) eastern white cedar swamp, in gilled mushroom ( Pholiota sp. on log) (1, RWC). Restigouche Co., Dionne Brook P.N.A., 47.9030°N, 68.3503°W, 19.IX.2011, R. P. Webster, old-growth northern hardwood forest, in gilled mushroom (1, RWC).

Collection and habitat data.

This is a fungicolous species occurring in various species of mushrooms (including Russula sp.), typically those growing on rotting wood ( Smetana 1996). Smetana (1996) reported that numerous specimens were captured in flight intercept traps. All records from Smetana (1996) were from September and October. In New Brunswick, adults were collected during September on Pholiota sp. at the base of a dead black cherry ( Prunus serotina Ehrh.), a dead Populus sp., and on a log. One individual was collected from a gilled mushroom on the forest floor. Adults were found in a mature mixed forest, an eastern white cedar swamp, and in an old-growth northern hardwood forest.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Smetana 1996).