| Megaloptera - dobsonflies, fishflies, and alderflies |
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 Dobsonfly Corydalidae 2 in.  Alderfly Sialidae 1/2 in. Dobsonfly adults are found near streams but are often are attracted to lights. Adults are remarkable due to their size and the size and shape of their mandibles, especially pronounced in the male. The larvae are called hellgrammites. They live under stones in rapidly running streams and are prized by fishermen because they make excellent bait. Fishfly and alderfly larvae also are found in water but only reach approximately half the size of the hellgrammite, which attains a length of 3 inches. |
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