Forty new records of aleocharine beetles, and two new species in the genera Acrotona Thomson and Atheta Thomson, for the province of Manitoba, Canada (Coleoptera: Staphylinidae: Aleocharinae) Author Klimaszewski, Jan Resources Canada, Canadian Forest Service, Laurentian Forestry 1055 du P. E. P. S., P. O. Box 10380 Stn. Sainte-Foy, Québec, Quebec, Canada G 1 V 4 C 7 jan. klimaszewski @ canada. ca Author Godin, Benoit 14 A Thompson Whitehorse, Yukon, Canada Y 1 A 0 C 4 Author Davies, Anthony Canadian National Collection of Insects, Arachnids and Nematodes Agriculture and Agri-Food Canada Ottawa, Ontario, Canada K 1 A 0 C 6 Author Bourdon, Caroline Resources Canada, Canadian Forest Service, Laurentian Forestry 1055 du P. E. P. S., P. O. Box 10380 Stn. Sainte-Foy, Québec, Quebec, Canada G 1 V 4 C 7 Author Horwood, Denise 14 A Thompson Whitehorse, Yukon, Canada Y 1 A 0 C 4 text Insecta Mundi 2018 2018-07-27 2018 641 1 33 journal article 10.5281/zenodo.5173990 1942-1354 5173990 9415B2C5-9166-4014-985F-7955E72805D2 Gyrophaena laetula Casey Distribution Origin Nearctic Distribution Canada : MB, NB, NF. USA : DC, IL, IN, KY, MA, NY, PA, TN, VA, WI New provincial Canada : Manitoba : Birds Hill [Prov. Park] bur oak [trail], 2016-IX-16 , 50.0083°N , record 96.9216°W , 264 m , mushrooms, sifting, B. Godin & D. Horwood ( BGC ) 1 male ; Max Lake, 2016-IX-10 , 49.0714°N , 100.1384°W , 686 m , mushrooms, sifting, B. Godin & D. Horwood (LFC) 1 male . References Casey 1906 , Seevers 1951 , Klimaszewski et al. 2018 Collection and habitat data. Habitat (outside of the study area). Mixed forests (mature to old), regenerating mixed forest, red oak forest, red spruce and yellow birch forest, mature red spruce and red maple forest, old jack pine forest, and forested black spruce bog with red maple. Adults on/in fresh gilled mushrooms, on Pleurotus sp. on dead standing Populus tremuloides Michx , and in fresh Boletus mushrooms. Collecting period . VI–IX. Collecting method . S ifting mushrooms.