5-Methyl-2-phenyl-2-hexenal in the scent gland secretion of male cave crickets, Troglophilus cavicola and T. neglectus (Ensifera: Rhaphidophoridae).

5-Methyl-2-phenyl-2-hexenal, a distinctly smelling compound, was identified as a constituent of the male scent gland secretion of two species of cave crickets, Troglophilus cavicola and T. neglectus. It is the first proof of a male specific exocrine compound in grasshoppers.