title: Contents of poison apparatus and their relation to trail-following in the antDaceton armigerum.
abstract: The poison gland, which is the source of the trail pheromone inDaceton armigerum, contains a mixture of dimethylpyrazine, trimethylpyrazine and 3-ethyl-2,5-dimethylpyrazine in approximately equal proportions, similar to that of the antManica rubida. The cross-activity in trail-following tests with several other species can thus be explained. The Dufour gland ofD. armigerum contains a mixture of 26 identified hydrocarbons, chiefly 9-tricosene, tricosane, and 9-pentacosene. It also contains very small amounts of two sesquiterpene aldehydes, tetramorine-2 and tetramorine-3, already known in other myrmicine Dufour glands. No volatile substances were detected in the pygidial gland.
authors.affiliation: Department of Chemistry, University of Keele, Keele, Staffordshire, England.
authors.forename: E D
authors.initials: ED
authors.lastname: Morgan
authors.forename: B
authors.initials: B
authors.lastname: Hölldobler
authors.forename: T
authors.initials: T
authors.lastname: Vaisar
authors.forename: B D
authors.initials: BD
authors.lastname: Jackson