Silusa alternans Sachse

Klimaszewski, Jan, Chandler, Donald S., Davies, Anthony & Bourdon, Caroline, 2023, Aleocharine rove beetles of New Hampshire, USA: new taxa and new records (Coleoptera, Staphylinidae, Aleocharinae), Zootaxa 5364 (1), pp. 1-141 : 85-86

173. Silusa alternans Sachse

(Illustrations in Klimaszewski et al. 2003, 2018), Table 1

References. Sachse 1852. Casey 1893, 1906. Klimaszewski et al. 2003, 2007, 2018. Majka and Klimaszewski 2008, 2010. Brunke et al. 2012.

Distribution. Nearctic. Canada: NB, NS, ON, PE, QC. USA: GA, NH, NY.

Collection and Habitat data. The NH specimens were captured in Russula mushrooms, a mass of mushrooms on a large stump, and rotten wood; most commonly taken by flight intercept and Malaise traps. Collected from June to September in NH. In Canada collected in a variety of hardwood and coniferous forests (Klimaszewski et al. 2003, 2018). Adults usually taken in various kinds of decaying mushrooms, and are most commonly found in late summer; in decaying polypore mushroom on sugar maple, in decaying mushrooms on forest floors, in fleshy mushrooms of various stages of decay, in rotting fleshy fungi, in mushrooms including Russula sp. , a few were captured by Lindgren funnel traps (Klimaszewski et al. 2003, 2018).

Material. USA: New Hampshire, Carroll Co.: 6 mi NW Nancy Brook Trail , 1500’, 9.IX.1987, A. Davies and Y. Bousquet, ex Russula mushrooms ( CNC), 1 female . The Bowl, 2.5 mi NW Wonalancet , 24–30.VII.1985, 31.VII–6.VIII.1985, 22–28.VIII.1985, 6–17.IX.1985, D.S. Chandler, FITrap, 6 males ; 23.VIII–1.IX.1984, D.S. Chandler, malaise trap, 1 female; 11–16.VIII.1984, D.S. Chandler, FIT, 1 male. 1 mi N Wonalancet, E Fk. Spring Brk. , 14–21.VIII.1985, 22–28.VIII.1985, 29.VIII–5.IX.1985, fl. intercept trap, 1900’, D.S. Chandler, 4 males, 1 female . Coos Co.: 2 mi NE Crawford Depot, 2100’, 13.IX.1987, J.M. Campbell and A. Davies, mass of mushrooms on large stump ( CNC), 1 sex? Grafton Co.: Hubbard Brook Exp. Forest , Bear Brook , 1950’, 6.VII.1983, D.S. Chandler, sift rotten wood, 1 male . Strafford Co.: Durham , 24.IX.1991, W.J. Morse, on fungi, 1 female . Spruce Hole , 3 mi SW Durham, 11–18.VI.1987, 2–9.VII.1987, 10–23.VII.1987, 3–24.IX.1987, D.S. Chandler, FIT, 4 males, 2 females .