What is the X in X-mas?
any of a group of wasps in the family Vespidae (order Hymenoptera) that are striking in appearance, about 16 mm (0.63 inch) long, with orange antennae, wings, and tarsi. The body may be jet black or brown with narrow yellow bands and paired segmental spots. The sting is painful but less toxic to humans than that of the more familiar species of wasps and hornets (Vespa, Vespula). The nest is made of a paperlike material, fashioned from wood that the females have chewed from dead trees, fence posts, or unpainted building lumber and mixed with saliva to form a paste. There are about 100 cells for larvae in a single nest, which is attached by a short stalk to some sort of protective overhang.