Acrotona subpygmaea (Bernhauer)

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 : 20

26. Acrotona subpygmaea (Bernhauer)

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

References. Bernhauer 1909. Brunke et al. 2012. Webster et al. 2016. Klimaszewski et al. 2018.

Distribution. Nearctic. Canada: NB, NS, ON, SK. USA: IN, MA, ME (NSR), NH (NSR), NY, RI.

Collection and Habitat data. Specimens in NH were captured by a flight intercept and pitfall traps, by sifting grass and leaf litter by a stream, by sifting oak, beech and huckleberry litter and other leaf litters along bog margins, and by processing grass sod with a Berlese. Collected from January–March and from May to October — probably active through the year. In NB recorded in moist leaves along margins of vernal ponds and snow-melt pools in various forest types as well as from leaf litter near a seepage and brook leaf litter and moss, from a Carex hummock in a Carex marsh, and in a gilled mushroom ( Webster et al. 2016, Klimaszewski et al. 2018), and in ON specimens were also found in vernal pool litter (several sites), forest litter, tree hole litter, litter in a bog, and wet moss on rocks at the margin of a spring ( Brunke et al. 2012).

Material. USA, Maine, Penobscot Co.: 4 mi W Orono, 28.V.1982, D.S. Chandler, sift leaf litter in wet depressions in forest, 1 female. York Co.: West Lebanon, 24–27.V.1991, D.W. Barry, FIT, 1 female. New Hampshire, Carroll Co.: 2 mi NW Wonalancet, 19.VII.1984, D.S. Chandler, sift leaf litter by stream, 1 male, 1 female. 6 mi NW Bartlett, Nancy Brook Trail , 1500’, 9.IX.1987, J.M. Campbell and A. Davies, sifting leaf litter along cascading stream ( CNC), 1 female. Coos Co.: 8 mi E Gorham, 800’, 14.VIII.1976, J.M. and B.A. Campbell ( CNC), 1 sex? Glen Boulder Trail, White Mts. , 2500’, 17.VIII.1976, J.M. and B.A. Campbell ( CNC), 6 males, 5 females, 8 sex? Glen Ellis Falls, 1500’, 16.VIII.1976, J.M. and B.A. Campbell ( CNC), 2 sex? Pinkham Notch , 1.VII.1982, D.S. Chandler, sift grass litter, 1 female. 1 mi NE East Inlet Dam , 10–26.V.1986, 1 male; 12–24.VI.1986, D.S. Chandler, FIT, 1 male. Second College Grant, nr. Dead Diamond Rd. , 44.93097, -71.074241, 30.I–26.III.2022, pitfall trap #47, 1 male; 44.929264, -71.083743, 30.I–26.III.2022, pitfall trap #107, 1 female; 44.932474, -71.081851, 20.III.2021, C. Ziadeh, pitfall trap W.1.125, 1 female. Second College Grant, nr. Swift Diamond Rd. , 44.88991, -71.136755, 20.III.2021, pitfall trap W.1.124, 1 male; 44.892247, -71.135284, 31.VII.2021, pitfall trap S.2.28, 1 female; 44.892213, -71.135211, 20.III.2021, C. Ziadeh, pitfall trap W.1.27, 1 male. Rockingham Co.: Jct. 1A & 1B, nr. Foyes Corner , 12.V.1982, D.S. Chandler, sift oak & beech litter, 2 females. Rockingham Co.: Seabrook backdunes, 18–31.V.1989, D.S. Chandler, FIT, 2 females. Strafford Co.: 1 mi SW Durham , 21.V.1982, water tower, 1 female; 27.V–10.VI.1987, FIT, 1 female; 11–18.VI.1987, D.S. Chandler, FIT, 1 male; 15.X–4.XI.1987, D.S. Chandler, FIT, 1 female; 21.V.1982, berlese grass clumps in swamp, 1 female. College Woods, Durham , 43.1404, -70.9461, 14.IX.2006, W.R. Beagan, berlese field sod, 1 male; 4.X.2007, Z.A. Bandola, berlese meadow sod, 1 female. Spruce Hole , 3 mi SW Durham, 9.VI.1982, D.S. Chandler, sift oak, beech and huckleberry litter along bog margin, 1 male, 2 females; 12–26.V.1987, FIT, 1 female; 27.V–10.VI.1987, FIT, 1 female; 9.VI.1982, sift fern & pine litter on bog edge, 1 male, 3 females; 26.V.1987, sift leaf litter on bog margin, 1 female; 20.VIII.1982, sift leaf litter on bog margin, 1 female; 29.VII.1987, sift beech leaf litter, 1 female; 9.VI.1982, sift fern & pine litter on bog edge, 1 female, all D.S. Chandler. Thompson Farm, 3.5 km SW Durham , 43.1162, -70.94755, 17m, 8.IX.2005, L.D. Sprague, oak / pine leaf litter, 1 female .