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Two Asterocampa sp. - Asterocampa - female

Two Asterocampa sp. - Asterocampa - Female
Knoxville, Seven Islands WMA, Knox County, Tennessee, USA
September 9, 2007
Asterocampa clyton (Tawny Emperor) and A. celtis (Hackberry Emperor) enjoying hackberry sap (along with a Polistes sp., which you can barely make out). I don't know if this will be useful for the Guide or not, since it shows two Asterocampa in the same shot, but I thought it might be interesting for side-by-side comparison of the underwings of the two on the genus page, maybe. I also wanted to submit this image, due to, in my opinion, the interesting occurrence of two congeners sharing this sap with a wasp. There were actually several of each species, but these two were the most determined. The wasp didn't bother either of them, but it was interesting to watch the two Emperor species actually seem to push each other out of the way of the seemingly sappier (and presumably tastier) spots on the trunk. I have some fairly decent shots of each species singly, but just of the one wanted to give me an open winged shot.

In the for what it's worth department
I thought I'd point out that both are females.

Moved from Butterflies.

Interesting Behavior
If you watched them for awhile, you probably found it as fascinating as I did. I noted the same things here, with wasps, hornets, flies and yellowjackets all comingling with Hackberrys, Tawnys, Red Admirals, Red-Spotted Purple Admirals, Eastern Commas, Question Marks and Gemmed Satyrs. I even saw a huge grasshopper in the same area once. It seemed as I watched them, that the Hackberrys got shoved around the most by the Tawnys and the Commas and Question Marks, in turn, shoved both of them around the most. The others kept pretty much to themselves. Very fascinating stuff. I'm glad you posted this.

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