New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, and an addition to the fauna of Quebec, Canada: Aleocharinae Webster, Reginald P. Klimaszewski, Jan Sweeney, Jon D. DeMerchant, Ian ZooKeys 2012 2012-04-26 186 83 118 E929E1B7-B83C-5ED2-8F36-ABD27DDB6996 Casey, 1906 ** Casey 1906 Hexapoda Staphylinidae Tachyusa GBIF Animalia Tachyusa obsoleta Coleoptera 5 88 Arthropoda species obsoleta  Material examined.  New Brunswick, Queens Co.,Welsford (Bayard) near Nerepis River, 45.4441°N, 66.3300°W, 27.VI.2006, R. P. Webster, coll., river margin, among grass and debris near water (3 ♀, RWC); Bayard at Nerepis river, 45.4426°N, 66.3280°W, 25.V.2008, 30.V.2008, 20.VI.2008, R. P. Webster, coll., river margin, lightly splashing fine sand (3 ♂, 3 ♀, LFC, RWC). York Co.,Douglas, Keswick River at Rt. 105, 45.9922°N, 66.8326°W, 9.V.2006, R. P. Webster, river margin, on moist clay (1 ♀, RWC).   Map 8.Collection localities in New Brunswick, Canada of  Tachyusa obsoleta.  Collection and habitat data. In New Brunswick, most adults of  Tachyusa obsoletawere collected during May and June by lightly splashing water on fine sand near a river margin. Other individuals were found on moist clay and by sifting grass and debris along river margins.  Distribution in Canada and Alaska. BC, SK, NB(  Pasnik2006). For records from the USA, see  Pasnik(2006). This is almost certainly a transcontinental species in North America.