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
Vanzolini's bald-faced saki his assistant Miguel Moreira. The mammals in this expedition were collected alive and prepared as museum specimens, as described by Cory T. Carvalho, the mammalogist working at the Goeldi museum at the time After 61 years, in 2017, one individual was collected after being hunted for bush meat in an extractive community in the state of Acre, Brazil. After not being seen alive for more than 60 years, as F. Novaes and M. Moreira collected specimens in 1956, an individual was photographed in the wild in August 2017. Vanzolini's bald-faced saki Vanzolini's bald-faced saki ("Pithecia vanzolinii") is a species of