Hydropsyche bronta
Ross, 1938
A net-spinning caddisfly in the Hydropsychidae. In summer-warm rivers of southern Ontario, exhibit trivoltine , completing three per year. Smaller than the sympatric H. morosa and overwinters in slightly older larval instars.
Pronunciation
How to pronounce Hydropsyche bronta: //hɪˈdrɒpsɪki ˈbrɒn.tə//
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Identification
Smaller than Hydropsyche morosa; tends to overwinter in slightly older larval instars than H. morosa. Specific morphological characters not provided in available sources.
Images
Habitat
Summer-warm rivers where water temperatures exceed 24°C for approximately 3 months and reach maxima of 27–30°C. Occupies lower river reaches (stream orders 4 and 5).
Distribution
Southern Ontario, Canada (Credit and Humber rivers). North America (broader range per GBIF).
Life Cycle
Trivoltine in summer-warm river conditions (three per year); at cooler sites below impoundments. Overwinters as larvae in older instars.
Similar Taxa
- Hydropsyche morosaSympatric in southern Ontario rivers; H. bronta is smaller and overwinters in older larval instars. H. morosa tends toward rather than trivoltine in the same warm-water conditions.