144. Gymnusa grandiceps Casey (Illustrations in Klimaszewski et al. 1979, 2018, 2020, 2021), Table 1 References. Casey 1915. Klimaszewski 1979, 1982. Klimaszewski and Génier 1985. Webster et al. 2009. Majka and Klimaszewski 2010. Klimaszewski et al. 2011, 2018, 2020, 2021. Distribution. Nearctic, transcontinental in Canada, recorded from A/S (Klimaszewski et al. 2021). Canada: BC, LB, MB, NB, NF, NS, ON, QC. USA: IL, MA, MD, ME, MI, NH, NY, RI. Collection and Habitat data. In NH captured in alder litter, litter by stream, and Alnus litter and Sphagnum near pond. Collected in March and September in NH; collected in April–May in ME. In Canada found in wet forested biotypes such as black spruce bogs (usually in lag zone), alder swamps, spruce and eastern white cedar (Thuja occidentalis L.) forests and swamps, vernal pond margins, and margins of small brooks under alders; in moist leaf litter and mosses in these habitats (Klimaszewski et al. 2021). Material. USA, Maine, Waldo Co.: Camden Hills St. Pk., Mt. Battle, 29.V.1982, D.S. Chandler, sift leaf litter along stream, 3 sex? York Co.: West Lebanon, 1–8.IV.1990, 1 sex?; 18–26.IV.1990, 2 sex?; 7–14.V.1990, 2 sex?; 7–13.V.1990, D.W. Barry, FIT, 1 sex? Maryland, Calvert Co.: 1 mi S Chesapeake Beach, 12.VI.1983, D.S. Chandler, sift beach litter along marsh, 1 sex? Massachusetts, Middlesex Co.: Sherborn, 21–25.III, C.A. Frost, sifting, 1 sex? New Hampshire, Coos Co.: Norton Pool, 2 mi E East Inlet Dam, 7.IX.1984, D.S. Chandler, sift alder litter, 1 sex? 17 km S Gorham, Glen Ellis Falls, 1900’, 8.IX.1987, J.M. Campbell and A. Davies, sifting litter by stream (CNC), 1 sex? 8 mi S Gorham, Pinkham Notch, J.M. Campbell and A. Davies, sifting Alnus litter and Sphagnum near pond (CNC) 1 sex? Rockingham Co.: Hampton, 27.III.1932, S.A. Shaw, 1 sex?

Published as part of 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), pp. 1-141 in Zootaxa 5364 (1) on page 74, DOI: 10.11646/zootaxa.5364.1.1, http://zenodo.org/record/10145460