Bald-faced hornet hydrocarbons serve as a barrier to moisture diffusion and thus prevent dehydration in wasps. Cuticular hydrocarbon profiles vary over species and nests, and so cuticular hydrocarbons are a proposed mechanism for nest-mate recognition. Worker and queen cuticular lipids have similar components, but their distributions differ dramatically, implying that cuticular hydrocarbons also play a role in caste differentiation. The following lipid profiles were determined from specimens collected in the summer and early fall of northeastern Georgia in 1989. The dominant hydrocarbons recovered from the cuticles of workers were n-alkanes and methyl branched and dimethyl branched alkanes with a C27 or a
Bald Mountains range gets its name from the relatively frequent occurrence of grassy balds atop the more prominent summits. The Cherokee National Forest and the Pisgah National Forest protect substantial sections of the Bald Mountains. The Appalachian Trail traverses the crest of the range. Populated areas within the range include Erwin and Del Rio in Tennessee and Hot Springs in North Carolina. The highest summit in the Bald Mountains is Big Bald, which rises to an elevation of . Bald Mountains The Bald Mountains are a mountain range rising along the border between Tennessee and North Carolina in the southeastern United States.