The cephalic extracts of the ant Anochetus kempfi were found to contain 2,5
-dimethyl-3-isoamylpyrazine (1) and 3-methyl-4-phenylpyrrole (2). The struc
tures of these compounds were established from their spectral data and by c
omparison with synthetic samples. This is the first report of a phenylpyrro
le found in an insect and only the third report of a pyrrole from ants.