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 Hill (Australia) Bald Hill, which resulted in a coronial enquiry and the adoption of a management plan over Bald Hill in May 2003. Significant improvements to the management of hang gliding and paragliding activities have been undertaken since. Bald Hill (Lawrence Hargrave Memorial Park) is listed in the Wollongong Local Environment Plan as a heritage item of state significance. It is also listed in the Illawarra Regional Environmental Plan as a heritage item. The name is becoming rather a misnomer, for growth of weeds and grasses has become quite prevalent on its mid slopes from its base. There are toilet and carpark