Tuesday, June 7, 2011

Hellgrammite Hole

We were moving rocks recently and found a hellgrammite. Usually hellgrammites are aquatic and found when moving rocks in a stream.  This one was on land.
 This time of year the hellgrammites climb onto shore and find a suitable place to pupate.
 We found this hellgrammite's pupal chamber under a rock near the edge of our yard, which is the bank of the river.
 The hellgrammites have ugly looking mandibles and they know how to use them.

That hellgrammite hole was to be where the larva turned into a dobsonfly.  Since we put this one in the river to see what happened, we'll have to quickly find another one in order to see the larva in its pupal state.

Here is a link to a post with pictures of an adult Eastern Dobsonfly, which is what this hellgrammite will turn into.

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