A sex pheromone in the desert tenebrionid beetle Parastizopus armaticeps.

Males of the desert beetle Parastizopus armaticeps (Pér.) (Coleoptera: Tenebrionidae) exhibit a characteristic calling behavior that attracts females by raising the tip of the abdomen, exposing the aedeagus, and remaining in this posture for a few seconds while emitting a pheromone. We collected the pheromone by holding a solid phase microextraction fiber (100 mum polydimethylsiloxane) close to the aedeagus for 5 s and analyzed the volatiles collected by gas chromatography/mass spectrometry.

1-Tridecene--male-produced sex pheromone of the tenebrionid beetle Parastizopus transgariepinus.

Males of the genus Parastizopus (Coleoptera: Tenebrionidae) exhibit a special pheromone-emitting behaviour. They do a headstand, expose the aedeagus and remain in this posture for a few seconds. The pheromone emitted by P.