Atheta annexa Casey, 1910
CANADA: NEW BRUNSWICK: Albert Co.: Crooked Creek, 22.VIII.2003, C.G. Majka, along stream, decaying fungi, (3, CGMC) ; Mary’s Point, 20.IX.2002, D.S. Christie, white spruce forest, gill fungus, (1, CGMC) ; Mary’s Point, 8.IX.2004, C.G. Majka, white spruce forest, on Russula virescens (Schaeff.) Fr., (1, CGMC) . NOVA SCOTIA: Annapolis Co.: Big Dam Lake, Kejimkujik National Park, 27.VI-7.VII.2004, H. Love, hemlock forest, pitfall trap, (1, DAL) ; Channel Lake, Kejimkujik National Park, 18.IX.-2.X.2004, H. Love, maple/ oak/birch forest, pitfall trap, (6, DAL) ; Hants Co.: Woodville Ice Cave, 3.VIII.2007, M. Moseley, deep threshold of cave, leaf litter, (1, NSMC) ; Digby Co.: Pebbleloggitch Lake, Kejimkujik National Park, 13-24.VIII.2004, H. Love, maple/oak/birch forest, pitfall trap, (1, DAL) ; Kings Co.: 10.VIII.2005, D.H. Webster, compost heap, moldy corncobs, (1, DHWC); Queens Co.: Canning Field, Kejimkujik National Park, 14-23.VIII.2004, H. Love, hemlock forest, pitfall trap, (1, DAL) ; Cobreille Lake, Kejimkujik National Park, 27.VI-6.VII.2004, 13-24.VIII.2004, H. Love, maple/oak/birch forest, pitfall trap, (4, DAL) ; North Cranberry Lake, Kejimkujik National Park, 28.VI-8.VII.2004, H. Love, hemlock forest, pitfall trap, (1, DAL) . ONTARIO: Algoma Co.: Lake Superior Provincial Park, 11.IX.1980, R. Baranowski, (1m, MZLU; 1m, LFC; 1f, LFC) ; Nippising Co.: Algonquin Provincial Park near Brent, 20.VIII.1980, R. Baranowski, (5m, MZLU; 5f, MZLU; 2m, LFC) .
Atheta annexa is newly recorded in New Brunswick, Nova Scotia, and Ontario. It has been collected from organic debris, fungi near cave entrances, raccoon dung, and woodrat ( Neotoma spp.) nests (Klimaszewski and Peck 1986). In the Maritime Provinces it has been found in decaying fungi, in a cave threshold, and on moldy corncobs.