Key to subgenera of the genus Alnetoidia from Korea

1. Pygofer with dorsal and ventral processes; style more or less long with truncate apex; aedeagus various in shape... Alnetoidia

- Pygofer without ventral process; style with long wire-like apical portion, without distinct subapical process; aedeagus S-shaped in lateral view................................................................................... Alnella