Key to the European species of Mniophila STEPHENS, 1831

1. Aedeagus ventrally with apical third short, straight margins and nearly straight apex with denticle to elongated, narrow, with narrow apex without denticle (Fig.B); eyes convex, body usually slightly elongated (Fig. 1F); male first metatarsomere short and narrow (Fig. 1K), colouration black usually with greenish metallic lustre; pronotum long with base narrowly rounded (Fig. 1G); elytral puncation denser, often confused, secondary punctation larger. ........................................................................................................ M. muscorum

– Aedeagus ventrally with apical third short with rounded margins and rounded apex without distinct denticle, apex never elongated (Fig. 3J, K); eyes flattened; body clearly rounded (Fig. 3 A-C); male first metatarsomere long and wide (Fig. 3F); colouration usually light to dark brown; pronotum short with widely rounded base (Fig. 3E); elytral puncation sparser, usually more regular, secondary punctation usually smaller. .......................... M. bosnica