Paper Wasps - Polistes spp 

Brownish or brown and yellow stripes, narrow waist.  They usually do not nest in the ground - paper comb nests, 100-200 workers/nest.  Unlike honey bees, they can sting several times, due to their smooth sting apparatus. 
 

Yellow Paper Wasp  - Polistes flavus

Photograph courtesy of Justin O Schmidt PhD

Arizona Paper Wasp, Umbrella Wasp  - Polistes exclamans arizonicus

Photograph courtesy of Chris Starr PhD 
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