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
HMS Hornet (1911) HMS Hornet (1911) HMS "Hornet" was an "Acheron"-class destroyer of the Royal Navy that served during the First World War and was sold for breaking in 1921. She was the seventh Royal Navy ship to be named "Hornet", after the insect. She was built under the 1910-11 shipbuilding programme by John Brown & Company of Clydebank, Glasgow. She (and her sister ships and ) differed from the standard Admiralty I-class destroyer in only having two shafts instead of three. They had two Brown-Curtis type steam turbines, and twin boilers. Capable of , she carried two guns, other smaller guns and