Abstract

Cricotopus (Cricotopus) bicinctus (Meigen) and C. (C.) mackenziensis Oliver emerge from June to September in the Fort Simpson area, Northwest Territories. Cricotopus bicinctus begins and ends emerging later than C. mackenziensis. Cricotopus bicinctus apparently produces a mixture of two and three generations per year, whereas C. mackenziensis apparently produces three generations per year. Both species overwinter mainly in the second instar. Emergence data from other studies, when reevaluated, appear to underestimate the number of generations produced by C. bicinctus, indicating a similar number of generations as in the Fort Simpson area.

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