Bug Identifier
Dobsonfly
Community identification

Dobsonfly

Corydalus cornutus

Order & Family
Order Megaloptera, Family Corydalidae
Size
Large insects, ranging from 50mm to 75mm in length with a wingspan up to 130mm.
See this bug in the Encyclopedia

Natural Habitat

Near freshwater streams, rivers, and woodland areas across North America.

Diet & Feeding

Larvae are aggressive aquatic predators feeding on other aquatic insects. Adult males do not feed, while females may consume liquids like nectar.

Behavior Patterns

Nocturnal adults are strongly attracted to lights and spend larval stages underwater beneath rocks.

Risks & Benefits

Harmless to humans, though females can deliver a painful bite if handled. Larvae serve as vital bioindicators of high water quality.