Data from: Antennal lobe organization and pheromone usage in bombycid moths

We investigated the neuroanatomy of the macroglomerular complex, which is
dedicated for sex pheromone processing, in five species belonging to the
subfamily Bombycinae, Ernolatia moorei, Trilocha varians, Rondotia
menciana, Bombyx mandarina, and Bombyx mori. The glomerulus located at the
dorsal-most part of the olfactory center shows the largest volume in most
of the moth species studied thus far. Such normal glomerular organization
has been observed in E. moorei and T. varians, which use a two-component
mixture, including the compound bombykal as a mating signal. On the other
hand, the other three species, which use another component as a single
attractant, exhibit a modified arrangement of the macroglomerular complex.
This correlation between pheromone usage and neural organization might be
helpful for understanding speciation.