Altica sp. (Shiny Flea Beetle).
 
 
 
Size: approx. 5-6 mm. Photo: 05/14/16, 5 pm.


This flea beetle belongs to the genus Altica which has approximately 70 species north of Mexico. Adult beetles can jump away when approached. The small photo is from 09/05/11 (11 am). 
 

 
bug guide (this photo):
http://bugguide.net/node/view/1223608
wikipedia:
http://en.wikipedia.org/wiki/Altica