Weak-fliers
Guides
Megaloptera
alderflies, dobsonflies, fishflies
Megaloptera is a small order of holometabolous insects containing approximately 300 described species across two extant families: Corydalidae (dobsonflies and fishflies) and Sialidae (alderflies). Adults are characterized by large, membranous wings that fold over the abdomen, and many species have short adult lifespans during which they do not feed. Larvae are exclusively aquatic, predatory, and serve as important indicators of stream health due to their sensitivity to pollution. The order was formerly classified within Neuroptera but is now recognized as a distinct order within the superorder Neuropterida.
Psychodidae
Moth flies, Drain flies, Sink flies, Filter flies, Sewer gnats, Sand flies
Psychodidae is a large family of true flies comprising over 2,600 described species worldwide, with highest diversity in humid tropical regions. Members exhibit distinctive short, hairy bodies and wings that create a moth-like appearance. The family encompasses two ecologically divergent groups: non-biting moth flies that inhabit moist, decaying organic matter and plumbing systems, and blood-feeding sand flies (subfamily Phlebotominae) that serve as disease vectors.
Scatopsinae
Scatopsinae is a subfamily of minute black scavenger flies (Diptera: Scatopsidae). These small, dark-colored flies are generally associated with decaying organic matter. The subfamily contains numerous genera and species distributed across diverse habitats worldwide. They are distinguished from the other scatopsid subfamily, Aspistinae, primarily by wing venation and antennal characteristics.