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Male Dobsonfly

Posted by May 21st, 2010 at 6:32 pm

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Dobsonflies and Fishflies

Large Mottled Insect
May 21, 2010
I found this insect outside an office building in the parking lot. It ws the most unusual insect I think I have ever seen. The bug was about 4 inches long and not the least bit shy. It walked towards me instead of away and tried to crawl up onto my shoe. I was just wondering what it is and a little more about it.
Leah
Cullman, Ala

dobsonfly leah 300x172 Male Dobsonfly

Dobsonfly

Hi Leah,
We know that summer is coming when the Dobsonfly images start to arrive in our email box.  This is a male Dobsonfly, which may be distinguished from the female by his trophy mandibles.  The female’s less impressive mouthparts are actually much more utilitarian, and she is able to deliver a painful pinch if carelessly handled.  We have read that the male uses his saber-like mandibles for mating and/or jousting with other males, and we long for a photo documentation that illustrates the behavior.

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