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
Ken Bald 1962,by which time Bald had started drawing his next strip, "Dr. Kildare." Bald and writer Elliot Caplin produced the daily strip "Dr. Kildare", based on the television show of that name. A Sunday color strip was added beginning on April 19, 1964. Comics historian Maurice Horn said, "Bald, who modeled the two principals on the actors who played them on television (Richard Chamberlain and Raymond Massey), drew the strip with breezy, self-assured elegance." Bald continued to draw the "Dr. Kildare" strip for 22 years until 1984, long after the 1960s television series had ended. In 1971, Bald (credited as K.