177. Silusida marginella (Casey)

(Illustrations in Klimaszewski et al. 2018), Table 1

References. Casey 1893, 1906. Ashe 1992. Klimaszewski et al. 2005a, 2011, 2018. Majka and Klimaszewski 2008.

Distribution. Nearctic. Canada: NB, NF, NS, ON, PE, QC. USA: CA, IA, KS, ME (NSR), NH (NSR), NY, PA, TN.

Collection and Habitat data. The ME and NH adults were taken primarily by flight intercept and window traps, with some found in litter by a stream, and from Russula mushrooms and a mass of mushrooms on a large stump. Adults mainly taken from August to October, with two females captured in May–June (possibly overwintering adults). In Canada recorded from various hardwood, coniferous, and mixed forests. Adults found in decaying gilled fungi (often very common), Russula mushrooms, on a bracket fungus, and in a decaying white birch ( Betula papyrifera Marshall) log (Klimaszewski et al. 2011, 2018).

Material. USA, Maine, York Co.: West Lebanon, 28.VIII–3.X.1990, 1 male ; 18–25.XI.1991, 1 male, 1 female, D.W. Barry, FIT. New Hampshire, Carroll Co.: 1271 mi N Wonalancet, E Fk. Spring Brk., 1900’, 22–28.VIII.1985, 1 male ; 29.VIII–5.IX.1985, 2 males, 1 female; 6–17.IX.1985, 1 male; 14–21.VIII.1985, D.S. Chandler, fl. intercept trap, 1 female. 6 mi NW Bartlett, Nancy Brook Trail, 1500’, 9.IX.1987, A. Davies and Y. Bousquet, ex Russula mushrooms (CNC), 9 sex? Mt. Chocorua, 1.VIII.1982, W.J. Morse, fungus, 1 female . Coos Co.: 6 mi NW Nancy Brook Trail, 1500’, 9.IX.1987, A. Davies and Y. Bousquet, ex Russula mushrooms (CNC), 9 sex ? 17 km S Gorham, Glen Ellis Falls, 1900’, 8.IX.1987, J.M. Campbell and A. Davies, sifting litter by stream (CNC), 4 sex ? 2 mi NE Crawford Depot, 2100’, 13.IX.1987, J.M. Campbell and A. Davies, mass of mushrooms on large stump (CNC), 1 sex ? 8 mi E Gorham, 800’, 14/ 15.VIII.1976, J.M. and B.A. Campbell (CNC), 3 sex? Mt. Washington, Lakes of the Clouds, 5000’, 10.IX.1987, A. Smetana (CNC), 1 female . White Mts., Crawford Notch , Silver Cascade, 17.VIII.1976, J.M. Campbell (CNC), 1 sex? Grafton Co.: Hubbard Brook Exp. Forest, Bear Brook, 1500’, 15.X.1982, D.S. Chandler, sift rotten wood, 1 male, 1 female . Strafford Co.: Spruce Hole, 3 mi SW Durham, 27.V–10.VI.1987, D.S. Chandler, FIT, 1 female . 4 mi W Durham, 14–17.V.1982, R.M. Reeves, window trap, 1 female .