Species: Nemotaulius hostilis (Hagen) 1873

The larval case is generally flattened made of "larger" plant material pieces. Larvae inhabit lake margins and slow moving rivers (Smith 1984). The larvae are the overwintering stage. The adult flight period is in June.

References:

Smith, D. H. 1984. Systematics of Saskatchewan Trichoptera larvae with emphasis on species from the boreal streams. Ph.D. Thesis U. of Saskatchewan, Saskatoon. SK 1302 pp.