†Stigmomyrmex robustus Mayr, 1868c: 97, pl. 5, fig. 101 (w.) BALTIC AMBER (Eocene).

Secondary type information: Primary type material: neotype worker (by designation of Radchenko & Dlussky, 2017b: 778). Primary type locality: Baltic amber. Primary type depository: Museum of the Earth, Warsaw, Poland (MZ). Primary type specimen: MZ PAN 8483 (neotype).