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Eastern Dobsonfly

Corydalus cornutus


Adult dobsonflies are large insects, 100 to 140 mm (Arnett 2000), with large wings from which the order name Megaloptera (large wing) is derived. The female has short powerful mandibles similar in size to those of the larva and is capable of drawing blood with her bite. The male has long, sickle-shaped mandibles (up to 40 mm in length) and is incapable of inflicting a painful bite.


Found throughout most of eastern North America east of the Continental Divide from Canada to Mexico near flowing streams which provide habitat for its larvae.

No species ID suggestions

Manhattan, Kansas, USA

Lat: 39.19, Long: -96.57

Spotted on Jul 1, 2017
Submitted on Jul 2, 2017

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