Atopomyrmex calpocalycola Snelling

Type location Cameroun (A. calpocalycolus; Snelling, 1992a: 96, fully illustrated, major and minor workers; re-spelt by Bolton, 1995), collected from Bayenti, north of Nguti, Southwest Province (D. McKey, 26.xi.1989); holotype and 26 paratype workers from internodes of the plant Calpocalyx species (Snelling, 1992a) .

Snelling's (1992a) illustrated description is at .

WORKER - TL 3.88-7.03 mm; variations considerable from other two species and given above; also head distinctly longer than broad in all sizes, and with fully erect hairs on the mesonotal dorsum, plus abundant appressed pubescence, especially on gastral tergites; sculpturation on front of head of very fine close striae and sparse fine punctures; colour very dark reddish-brown, clypeus and adjacent areas of face lighter.