Trivoltine
Guides
Hydropsyche bronta
A net-spinning caddisfly species in the family Hydropsychidae. In summer-warm rivers of southern Ontario, populations exhibit trivoltine life cycles, completing three generations per year. Smaller than the sympatric H. morosa and overwinters in slightly older larval instars.
Phyllonorycter blancardella
spotted tentiform leafminer, apple leafminer moth
Phyllonorycter blancardella is a small leaf-mining moth in the family Gracillariidae, widely distributed across Europe and North America. The species is a significant pest of apple orchards, where larvae create distinctive spotted tentiform mines in leaves. Adults are tiny with variable forewing coloration, often orange or tawny with blackish scaling. The species has two to three generations per year in temperate regions and is subject to complex parasitoid communities that influence its population dynamics.
Tanypus punctipennis
Tanypus punctipennis is a non-biting midge species in the family Chironomidae, subfamily Tanypodinae. It has been documented in European freshwater habitats, particularly Lake Balaton in Hungary, where research indicates a trivoltine life cycle with overlapping generations and extended emergence periods. The species is part of the diverse Tanypus genus, which are predatory midges found in aquatic environments.
Tanytarsus
non-biting midge
Tanytarsus is a large genus of non-biting midges comprising over 480 described species. The genus belongs to the tribe Tanytarsini within the subfamily Chironominae. Larvae occur in diverse freshwater habitats, with some species inhabiting marine environments. Species-level studies reveal complex life cycles with photoperiod and temperature as key determinants of seasonal patterns.