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Megaloptera
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Section

Megaloptera

Dobsonflies, alderflies, fishflies. Large soft-bodied insects. Predatory aquatic larvae — hellgrammites — are top-tier fish bait.

Cards

Corydalus cornutus

Corydalus cornutus

The eastern dobsonfly, Corydalus cornutus, is a large insect in the Corydalidae family. The larvae are known as hellgrammites and are among the top invertebrate predators in the streams in which they live, and are used by anglers as bait.

Megaloptera

Megaloptera

Megaloptera is an order of insects. It contains the alderflies, dobsonflies and fishflies, and there are about 300 known species.

Dobsonfly

Dobsonfly

Dobsonflies are a subfamily of insects, Corydalinae, part of the Megalopteran family Corydalidae. The larvae are aquatic, living in streams, and the adults are often found along streams as well. The nine genera of dobsonflies are distributed in the Americas, Asia, and South Africa.

Alderfly

Alderfly

Alderflies are megalopteran insects of the family Sialidae. They are closely related to the dobsonflies and fishflies as well as to the prehistoric Euchauliodidae. All living alderflies – about 66 species all together – are part of the subfamily Sialinae, which contains nine extant genera.Sialis lutaria is the commonest alderfly in the United Kingdom and across much of Europe.

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