Atheta (Dimetrota) pseudocrenuliventris Klimaszewski 2005

62. Atheta (Dimetrota) pseudocrenuliventris Klimaszewski

(Illustrations in Klimaszewski et al. 2005, 2018), Table 1

References. Klimaszewski et al. 2005a, 2008, 2011, 2018, 2021. Majka et al. 2006. Brunke et al. 2012.

Distribution. Nearctic, transcontinental in Canada, recorded from A/S (Klimaszewski et al. 2021).

Canada: AB, BC, LB, NB, NF, NS, NT, ON, YT. USA: AK, ME (NSR), NH (NSR).

Collection and Habitat data. The NH specimens were captured by flight intercept traps from May to September. The NH traps were all in the northern portion of the state, the ME trap was in the southern portion of the state. In AK adults were found in a Betula, Salix, and white spruce forest; OTS- Salix, crowberry hummock, in Betula and Populus tremuloides forest, and mixed black and white spruce forest with willow (Klimaszewski et al. 2021). In Canada captured in pitfall, carrion-baited pitfall, and flight intercept traps in mixed and coniferous forests; on coastal barrens in LB, and in owl nests in NS (Klimaszewski et al. 2021). In NB specimens were sifted from litter, grasses and moss on hummocks near water in a wet old-growth eastern white cedar swamp, and from the margins of a vernal pond margin, and red maple swamp, as well as from grass and litter at bases of alders in a marshand grass litter in seepage area with Carex and Spartina patens on upper margin of salt marsh (Klimaszewski et al. 2021). It is possible that this is a wetland species associated with decaying litter. The Bedell Bridge site in NH was adjacent to vernal pools and small sloughs of Oliverian Brook.

Material. USA, Maine, York Co.: West Lebanon, 17–23.VII.1990, 24–30.VII.1990, D.W. Barry, FIT, 3 males. New Hampshire, Coos Co.: 1 mi NE East Inlet Dam, 25.VI–9.VII.1986, D.S. Chandler, FIT, 1 female. Norton Pool, 3 mi NE East Inlet Dam, 9–26.V.1986, 25.VII–7.VIII.1986, 8–21.VIII.1986, D.S. Chandler, FIT, 4 males, 1 female. Grafton Co.: Bedell Bridge St. Park @ Oliverian Brook, 7–24.V.1992, 8–22.VI.1992, 15–26.VII.1992, 3–19.VIII.1992, 20.VIII–6.IX.1992, D.S. Chandler, FIT, 5 males, 3 females.