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🦷 Dobsonflies & Alderflies

Eastern Dobsonfly

Corydalus cornutus

About

Males have enormous sickle-shaped mandibles up to 40 mm long used in combat for mates. Despite their fearsome appearance, the large mandibles are too unwieldy to deliver a strong bite.

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Did You Know?

Male dobsonfly mandibles are an example of sexually selected exaggeration β€” they look terrifying but are actually weaker than the shorter female mandibles.