Purification of the Trail Pheromone of Lasius fuliginosus LATREILLE.

The trail pheromone of Lasius fuliginosus LATREILLE contained two kinds of chemicals: fatty acids such as n-hexanoic acid and n-heptanoic acid contained in the hind gut (HUWYLER et al., 1975), and an aliphatic alcohol. The trail-pheromone activity of the latter compound was stronger than that of the fatty acids. However, no peak corresponding to the putative trail pheromone could be detected in two different capillary columns, probably because the amount of pheromone was too small.