Key to last instar larvae of Korean species of Limonia

1. Dorsal and ventral sclerites of spiracular field heavily sclerotised (Fig. 33)....... Limonia macrostigma (Schummel, 1829)

- Dorsal and ventral sclerites of spiracular field pale (Figs. 51, 68)................................................2

2. Caudal end of head capsule (frons) tridentate (Fig. 48)............................. Limonia nubeculosa Meigen, 1804

- Caudal end of head capsule (frons) without remarkable teeth (Fig. 61).............. Limonia parvipennis Alexander, 1940