http://research.tamu.edu/2013/06/10/were-not-bees-if-you-please/
Mexican honey wasps form paper nests that are usually found in trees and shrubs. They are smaller than a honey bee, are almost all black in body color, and are not very hairy. They also are not very aggressive and often ignore human activity. More information about Mexican Honey Wasps can be found on the Texas A&M AgriLife Extension website.
http://today.agrilife.org/2013/04/25/not-bees-honey-wasps/
