The Chironomus group (Diptera: Chironomidae) in Lake Winnipeg, Canada Author Saether, Ole A. text Zootaxa 2012 3275 1 19 journal article 10.5281/zenodo.280836 816a8d34-8ace-44a0-ae2f-087469a0691e 1175-5326 280836 Chironomus (Chironomus) atrella Townes Tendipes atrella Townes, 1945 : 124 . Material examined. Lake Winnipeg light traps: 10 km ESE Pearson Reef, 1 male , 1 female , 5.vi. 1969 . The single adult male collected has an AR of 4.14, 21 sensilla chaetica on p2 and 18 on p3. A female presumably belonging to C. atrella has 65 sensilla chaetica on p2, 34 on p3. Distribution and ecology. The species is known from prairie sloughs, pools and lakes from Prince Edward Island to Alberta and British Columbia , and south to Massachusetts, California, Colorado and New Mexico ( Townes 1945 : 124, Oliver et al. 1990 : 42, Martin 2012 .