72. Atheta (Alaobia) ventricosa Bernhauer

(Illustrations in Klimaszewski et al. 2018, 2021), Table 1

References. Bernhauer 1907. Gusarov 2003. Klimaszewski et al. 2005a, 2008b. Klimaszewski et al. 2007, 2011, 2015, 2018, 2021. Majka and Klimaszewski 2008, 2010.

Distribution. Nearctic, transcontinental in Canada, recorded from A/S (Klimaszewski et al. 2021). Canada: AB, BC, LB, NB, NF, NS, ON, QC, SK, YT. USA: AK, CA, DC, IN, MA, ME (NSR), NC, NH, NJ, NY, PA, VT, WA.

Collection and Habitat data. The NH specimens were captured by flight intercept traps, and by sifting a variety of leaf litters and rotten woods in forests and by streams and bogs. Collected from April to October. In AK specimens were found in Betula, Salix, Populus, and Picea glauca forests, and in old-growth, clear-cut, and thinned and un-thinned 2nd growth forests, in decaying mushrooms in a Betula forest; and in a coastal rain forest. In Canada adults were found in various forest types, usually in decaying fungi (often common) and leaf litter; and in Carex marsh in litter at base of tree. In NF taken in unbaited and carrion-baited pitfall traps and flight intercept traps in various coniferous, mixed wood, and riparian forests (Klimaszewski et al. 2021).

Material. USA, Maine, York Co.: West Lebanon, 9–15.V.1990, 12–18.VI.1990, 24–30.VII.1990, D.W. Barry, FIT, 3 females. New Hampshire, Belknap Co.: Lower Gilmanton, 23.IV.1982, berlese leaf litter, 8 males, 7 females, 1 sex?; 23.IV.1982, S.L. Radke, sift leaf litter, 1 female. Carroll Co.: 2 mi NW Jackson, 11.IX.1981, D.S. Chandler, berlese forest litter, 1 male. 2 mi NW Wonalancet, 21.X.1983, D.S. Chandler, sift rotten wood, 1 male. The Bowl, 2.5 mi NW Wonalancet, 4.VI.1984, D.S. Chandler, mushrooms, 1 male; 27.VI.1984, D.S. Chandler, sift leaf litter on spring edge, 1 female; 16.VIII.1984, D.S. Chandler, sift rotten wood, 1 sex? 6 mi NW Bartlett, Nancy Brook Trail, 1500’, 9.IX.1987, J.M. Campbell and A. Davies, sifting Pleurotus on tree trunk (CNC), 1 sex?; A. Davies, sifting Fagus litter beside logs (CNC), 2 males, 11 sex?; Y. Bousquet (CNC), 1 female, 1 sex? 8 mi NW Bartlett, Nancy Brook Trail, 2500’, 9.IX.1987, J.M. Campbell and A. Davies, Sphagnum in mist zone of waterfalls (CNC), 1 male. 17 km S Gorham, Glen Ellis Falls, 1900’, 8.IX.1987, J.M. Campbell and A. Davies, sifting litter by stream (CNC), 2 females, 1 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? White Mts., Crawford Notch Silver Cascade, 17.VIII.1976, J.M. Campbell (CNC), 1 male, 3 sex? Cheshire Co.: Rhododendron St. Pk., 22.IV.1982, D.S. Chandler, sift leaf litter along stream, 1 female. Coos Co.: Gorham, 800’, 15.VIII.1976, J.M. and B.A. Campbell (CNC), 1 female. White Mts., Glen Boulder Trail, 2500’, 17.VIII.1967, J.M. and B.A. Campbell (CNC), 3 sex? White Mts., Glen Ellis Falls, 1900’, 15.VIII.1976, J.M. and B.A. Campbell (CNC), 1 sex? Hwy. 33, Second Connecticut Lake, 23.V.19822, D.S. Chandler, sift grass and alder litter, 1 male. Mt. Washington Auto Road, 3000’, 1.VIII.1982, D.S. Chandler, sift rotten birch, 3 females; 2700’, 7.VIII.1982, D.S. Chandler, sift litter along stream, 2 females; 2700’, 25.VI.1982, D.S. Chandler, sift rotten wood, 1 male. Norton Pool, 3 Mi NE East Inlet Dam, 11.VI.1986, D.S. Chandler, sift conifer logs, 1 male, 2 sex?; 27.V–11.VI.1986, D.S. Chandler, FIT, 1 sex? Pinkham Notch, 1.VII.1982, D.S. Chandler, sift leaf litter on pond margin, 1 female. Second College Grant, nr. Swift Diamond Rd., 44.889933, -71.125962, 4.IX.2021, C. Ziadeh, pitfall trap S.3.87, 1 male; 44.891344, -71.13651, 31.VII.2021, C. Ziadeh, pitfall trap S.2.25, 1 female; 44.8871749, 71.123341, 20.III.2021, pitfall trap W.1.71, C. Ziadeh, 1 male (this M has much shorter elytra than average for this species and has dark brown elytra but genital characters are consistent with this species, tentatively associated here). Grafton Co.: Bedell Bridge St. Park @ Oliverian Brook, 25.V–7.VI.1992, D.S. Chandler, FITrap, 2 males; 26.VIII.1992, D.S. Chandler, berlese old river drift, 1 female. Hubbard Brook, Exp. For., Bear Brook, 1500’, 24.IX.1982, R.M. Reeves, sift leaf litter, 2 males, 2 females; 15.X.1982, D.S. Chandler, sift leaf litter along log, 1 male, 1 female; 1500’, 15.X.1982, D.S. Chandler, sift birch / beech leaf litter, 1 sex?; 2000’, 15.X.1982, 6. VII.1963, D.S. Chandler, sift litter by stream, 1 male, 1 female; 2200’, 24.IX.1982, R.M. Reeves, sift leaf litter, 1 male; 24.IX.1982, R.M. Reeves, spruce stump, 1 sex? 8 mi NW Bartlett, Nancy Cascades, 2500’, 9.IX.1987, J.M. Campbell and A. Davies, Sphagnum in mist zone of waterfalls (CNC), 1 male, 1 female. 5 km W Bartlett Sawyer Pond Trail, 1800’, 11.IX.1987, A. Davies, sifting frass and litter in Betula, Acer tree holes (CNC), 2 sex? Hillsborough Co.: Miller St. Park, 22.IV.1982, D.S. Chandler, sift oak litter, 2 females. Rockingham Co.: Odiorne Point St. Park, 18–25.V.1983, D.S. Chandler, window trap, 1 female. Strafford Co.: 4 mi W Durham, 19–21.V.1982, R.M. Reeves, window trap, 1 female. Spruce Hole, SW Durham, 9.VI.1982, D.S. Chandler, sift oak, beech and huckleberry litter along bog margin, 1 male; 20.V.1987, D.S. Chandler, sift beech leaf litter, 1 male.