Atheta (Atheta) aemula (Erichson)

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 : 22

31. Atheta (Atheta) aemula (Erichson)

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

References. Erichson 1839. Bernhauer 1907. Gusarov 2003. Webster et al. 2009. Brunke et al. 2012. Klimaszewski et al. 2018.

Distribution. Nearctic. Canada: NB, ON, QC. USA: CA, IA, KS, MA, MS, NC, NH, NJ, NY, PA, TX.

Collection and Habitat data. Specimens in NH were captured in sifted leaf litter at birch sap drop, in flight intercept and pitfall traps in forests, in silver maple litter by a stream, and in dune habitat. Adults were present from April to October. In Canada found in decaying organic material, under dog scat, on a river margin (flood plain) forest, flood debris on a river bank, in rotting wood chips, in decaying sea wrack on the upper margin of a beach, in compost (decaying vegetables) near a mixed forest, on mushrooms ( Morchella sp. ), and on Pleurotus sp. mushrooms on a dead trembling aspen in a mixed forest ( Klimaszewski et al. 2018).

Material. USA, New Hampshire, Grafton Co.: Bedell Bridge St. Park @ Oliverian Brook , 25.V–7.VI.1992, 3–19.VIII.1992, D.S. Chandler, FITrap, 2 females ; 3.VII.1992, D.S. Chandler, sift silver maple by stream, 1 male ; 3.VII.1992, D.S. Chandler, berlese maple litter along stream in forest, 1 male . Rockingham Co.: Seabrook backdunes, 1–14.VI.1989, 15–28.VI.1989, D.S. Chandler, FIT, 2 males . Strafford Co.: Durham , 26.V.1987, W.J. Morse, rotting lawn clippings, 1 male, 1 female . 1 mi SW Durham , 16.IV.1982, D.S. Chandler, water tower, 1 female ; 21.V.1982, D.S. Chandler, sift leaf litter birch sap drip, 1 female . Kingman Farm, 3.5 km N Durham , 47m, 17.IX– 1.X.2009, forest, pitfall, 1 male . Lee , 9.V.1965, 1 female .