What's That Bug? does not endorse extermination

Subject: river bug in Iowa
Location: Winnebago River, Mason City IA
June 9, 2013 11:32 pm
We saw several of these bugs along a river trail today after very heavy rainfall and slight flooding. Any idea what these are?
Signature: Elizabeth Haag

Hellgrammite

Hellgrammite

Hi Elizabeth,
This is a Hellgrammite, the semiaquatic larval form of a Dobsonfly.  For years, we have been trying to uncover the origin of the name Hellgrammite, but alas, our searching has not proven fruitful.  We are also hoping to eventually be able to post a photo of a pair of Dobsonflies mating.

What's That Bug? does not endorse extermination
Location: Mason County, Iowa

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