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|© John Pickering, 2004-2017|
|The mandibles of adult males of the Eastern Dobsonfly, Corydalus cornutus, are impressive and much larger than those of females. They are used in courtship. However, when it comes to biting, watch out for the females! Unlike the showy males, the females' jaws can inflict a painful bite, easily break your skin, and make you bleed. Both male and female adults fly to porch lights. They have a wingspan of about 11cm (4.5 inches). Their larvae are aquatic predators, know as hellgrammites, and because they do better in unpolluted streams, can serve as bio-indicators of water quality.|
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Updated: 2018-08-15 12:03:10 gmt
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