Silusa alternans Sachse, 1852

CANADA: ONTARIO: Nipissing Co.: Algonquin Provincial Park near Brent, 20.VIII.1980, R. Baranowski, (1m, LFC) ; Algonquin Provincial Park near Brent, 21.VIII.1980, R. Baranowski, (1f, MZLU) .

Silusa alternans is newly recorded in Ontario. North American Silusa species are predominantly associated with mushrooms and S. alternans has been collected in yellow birch ( Betula alleghaniensis Britt.) and balsam fir ( Abies balsamea (L.) Mill) dominated forests from Clavaria sp., Russula sp., and other fungi (Klimaszewski et al. 2003) .