n African Entomology - Secretions of Dufour's gland in some ants (Hymenoptera: Formicidae)

Volume 22, Issue 4
  • ISSN : 1021-3589



The ant (Mayr) (Hymenoptera: Formicidae: Ponerinae) is a small dark ant, a recent accidental introduction into Saudi Arabia. It tends to be found in or near human habitations, and it is particularly unpleasant because its sting can cause severe reaction in some individuals, and there are reports of fatal effects. Analysis of the poison apparatus of , locally known as the samsum ant, and comparison with two other native small black ants, and (Hymenoptera: Formicidae), have shown distinct differences in the materials in their Dufour glands and clearly distinguish from the two Messor species. showed only hydrocarbons in its Dufour gland dominated by nonadecene, nonadecane and heneicosane. The powerful venom revealed no volatile compounds. The Dufour glands of and had characteristic mixtures of hydrocarbons, but no venom gland volatile compounds. Pentadecane and hepadecane were the major compounds of the gland in while nonadecane and heneicosane were the major in .

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