Disonycha pensylvanica.
 
 
 
Size: approx. 5 mm. Photo: 05/13/15, 9 pm.


 Another pretty flea beetle. Disonycha pensylvanica is usually found near aquatic habitats. Its typical hosts are Polygonum spp. including smartweed. 
 
 
bug guide (this photo):
http://bugguide.net/node/view/1066934