Psacothea hilaris

Another contact sex pheromone was identified as a component of the cuticular lipids of females of Psacothea hilaris [350,351]. Extracts of the elytra contained (Z)-21-methyl-8-pentatriacontene 189. The synthetic compounds (both enantiomers were synthesized [352,353]) induced precopulatory behaviour in males, however, its biological activity was considerably lower than that of the natural extract. 

Sex pheromonal activity of geometric and optical isomers of synthetic contact pheromone to males of the yellow-spotted longicom beetles, Psacothea hilaris (Pascoe) (Coleoptera Cerambycidae). Appl. Entomol. Zool., 32, 654-656. 

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