Palpita sp..
 
 
 
Size: approx. 40 mm. Photo: 08/25/11, 10 pm.


The genus Palpita has 10 species in North America. The small photo shows another specimen that might be a different species in Palpita (photo taken on 08/02/12). 
 

 
bug guide (this photo):
http://bugguide.net/node/view/568512
bug guide (small photo):
http://bugguide.net/node/view/683766