Corydalidae

Definition

A family of megalopteran insects comprising dobsonflies and fishflies, characterized by large size, elongated bodies, and in males of many species, conspicuously enlarged mandibles used in mating displays. Larvae are aquatic predators commonly known as hellgrammites, inhabiting streams and rivers where they prey on other invertebrates. The family occurs across temperate and tropical regions of North America, South America, Australia, New Zealand, Africa, and Asia.

Etymology

Example

Male dobsonflies of the genus Corydalus bear mandibles so elongated that they cannot be used for feeding, serving solely as visual signals during courtship contests.

Synonyms

• dobsonfly family

Related Terms

• Megaloptera
• Dobsonfly
• Fishfly
• hellgrammite
• Sialidae
• aquatic insect
• holometabolous

Usage Notes

Distinguished from the related family Sialidae (alderflies) by larger adult size, more complex wing venation, and generally more elongate body form. The common name 'fishfly' is sometimes applied more broadly to neuropteroid insects, but in strict usage refers to Corydalidae.