“…2-Ethyl-3,6-dimethylpyrazine ( Figure 1) is a component of poison gland secretions of ant species in Myrmicinae (Acromyrmex, Atta, Daceton, Manica, Messor, Metapone, Myrmica, Pheidole, Pogonomyrmex, and Tetramorium) [8,10,11] and Ectatomminae (Eciton burchelli) [12], and primarily functions as a trail-following pheromone. There are several reports of 2-ethyl-3,6-dimethylpyrazine in mandibular glands of dolichoderine (Iridomyrmex purpureus), ectatommine (Ectatomma sp.)…”