Abstract
Observations and analytical experiments were conducted on the mating behavior of the udo longicorn beetle, Acalolepta luxuriosa BATES. It was found that the vision does not play an essential role in the recognition of the female by the male. The males recognized sexually mature females through the contact chemoreceptors of antennae. The pheromone was supposed to be spread over the surface of the female body. The effect of pheromone in eliciting the mating behavior in the male decreased gradually to zero on the 17th day after the death of the female. It was also shown that the female may recognize males of the same species through the chemosensory cues of antennae and palpi.
