Intermittent-stream
Guides
Isonychia sicca
Brushlegged mayfly
Isonychia sicca is a brushlegged mayfly species in the family Isonychiidae, distributed across Central America and North America including southeastern Canada and Mexico. As a member of the order Ephemeroptera, it exhibits the characteristic aquatic nymphal stage and brief adult lifespan typical of mayflies. A life history study has documented this species in intermittent stream habitats in north central Texas, indicating adaptation to temporary aquatic environments.
Leuctra duplicata
Atlantic Needlefly
Leuctra duplicata, known as the Atlantic needlefly, is a rolled-winged stonefly in the family Leuctridae. It is a univoltine species with a life cycle adapted to intermittent streams. Adults emerge in mid-to-late May over a 3-4 week period. The species has been recorded from northeastern North America, with notable rarity in some parts of its range.
Lopescladius
A genus of non-biting midges in the subfamily Orthocladiinae, known from the Neotropics. The first record for the Piranhas-Açu River basin in northeastern Brazil was documented in 2015, expanding the known distribution of this poorly studied genus.
Neohermes filicornis
Fishfly
Neohermes filicornis is a long-lived aquatic fishfly (Megaloptera: Corydalidae) inhabiting intermittent streams across North America. The species exhibits burrowing behavior and is adapted to temporary water systems with periodic drying. Adults are terrestrial while larvae are aquatic predators with extended larval development periods.