The Holarctic genus Manica Jurine, 1807 are mysterious and primitive ants from the tribe Myrmicini of the subfamily Myrmicinae. A new species (Manica shanyii He et al., 2024) from China has recently been described, which was the first documented appearance of the genus and a new species in China. In this study, the key features of M. shanyii are compared with Manica species and the related genus Myrmica Latreille, 1804. Morphological features are demonstrated here, which makes it possible to divide two close genera Manica and Myrmica. After studying the specimens of this species, we transfer Manica shanyii He et al., 2024 to Myrmica shanyii (He et al., 2024), comb. nov. Also, to comply with the nomenclature rules, we propose to consider Manica parasitica (Creighton, 1934), syn. nov., as a junior synonym of Manica bradleyi (Wheeler, 1909).