Abstract
The cuticular chemicals of the cockroach, Nauphoeta cinerea, that depress wing-raising activity in adult males were characterized from the cuticular wax of post-teneral-stage last-instar nymphs. Using spectral methods, the chemical structures of the depressants were determined to be a mixture of cis-25, 26-epoxy-29-methylpentacontadiene and five cis-25, 26-epoxyhenpentacontadienes. The mixture was considered to function as a nymph recognition pheromone by conspecific mature adult males through antennal contact.
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