Bug Identifier
Eastern Dobsonfly (Female)
Community identification

Eastern Dobsonfly (Female)

Corydalus cornutus

Order & Family
Megaloptera: Corydalidae
Size
2 to 5 inches (50 to 125 mm) in length wing-span.
See this bug in the Encyclopedia

Natural Habitat

Found near clean, fast-moving freshwater streams and rivers where larvae (hellgrammites) develop.

Diet & Feeding

Adults may drink nectar or water but often do not eat; larvae are fierce aquatic predators of soft-bodied insects.

Behavior Patterns

Adults are nocturnal and attracted to bright lights. Females possess short, powerful mandibles for defense, unlike the long, tusklike mandibles of males.

Risks & Benefits

Benefits: Larvae are indicators of good water quality and are prized as fish bait. Risks: Females can deliver a painful bite if handled, though they are not venomous.