Chironomid-predator
Guides
Analetris
Analetris is a genus of sand-dwelling mayflies in the family Acanthametropodidae, established by Edmunds in 1972. The genus contains at least two species: the extant Analetris eximia and the extinct †Analetris secundus. Members of this genus are specialized inhabitants of riverine environments with unstable silty substrates. The best-studied species, A. eximia, is considered endangered due to habitat destruction from reservoir construction.
Monohelea
Monohelea is a genus of predaceous biting midges in the family Ceratopogonidae. The genus has cosmopolitan distribution with records from the Americas, including Brazil, Argentina, the United States, Mexico, and the Caribbean, as well as other regions. Females are known predators of small insects, particularly chironomid midges. Immature stages are poorly documented in the Neotropics, though larvae have been found in sphagnum moss and bog-like habitats in other regions.
Pseudiron centralis
White Sand-river Mayfly
Pseudiron centralis is a predaceous mayfly species endemic to sandy freshwater river habitats in North America. It exhibits a univoltine summer life cycle with an extended egg stage lasting 9–10 months. Larvae are active epibenthic predators specialized for feeding on psammophilous chironomid larvae, with distinct microhabitat shifts during development: early instars occupy marginal sands, while later instars inhabit shifting sand dunes in main channel areas. The species shows low population density but also low mortality, with random dispersion patterns in mature larvae.