Stigmomyrmex

Identification
Radchenko and Dlussky (2017) - The genus Stigmomyrmex is characterized by 10-segmented antennae with the distinct 3-segmented clubs, by the sharply pointed humeri, by the sessile, “gable-like” petiole (similar to that of the species of the modern genus Myrmecina), and by the lack of spurs on the middle and hind tibiae (Mayr 1888, Wheeler 1915). Its taxonomic position is still uncertain. Based on the 10-segmented antennae in Stigmomyrmex, Mayr (1868) compared it with the myrmicine genera Solenopsis, Carebara and Liomyrmex. Nevertheless, Stigmomyrmex well differs from the any other known extinct and extant genera of Myrmicinae, while Bolton (2003) placed it in the tribe Formicoxenini.

Nomenclature

 * † STIGMOMYRMEX [Myrmicinae: Crematogastrini]
 * †Stigmomyrmex Mayr, 1868c: 95. Type-species: †Stigmomyrmex venustus, by subsequent designation of Wheeler, W.M. 1911f: 173.