Key to the Scoloposcelis species from the Palaearctic Region

1. Ventral surface of hind femur spinulate.................................................................... 2

- Ventral surface of hind femur smooth...................................................................... 3

2. Antennal segment II dark brown; ventral surface of mid femur without spinules............... S. parallela (China, Japan)

- Antennal segment II yellowish brown to dark brown; ventral surface of mid femur with two spinules towards apex............................................................................. S. boninensis (Japan: Ogasawara Islands)

3. Ventral surface of fore femur with two rows of spinules....................................................... 4

- Ventral surface of fore femur with one row of spinules........................................................ 5

4. Cuneus brown in contrast to pale yellow endocorium................ S. pulchella pulchella (Northern Palaearctic Region)

- Cuneus and posterior area of the endocorium widely brown........... S. pulchella angusta (Europe: Mediterranean region)

5. Hemelytra and legs entirely black or dark brown.......................... S. obscurella (China, Russia, entire Europe)

- Hemelytra excluding outer half of clavus, basal half of endocorium and embolium, inner basal area of membrane black or dark brown; legs excluding tibiae and tarsi dark brown............................................................ 6

6. Head and pronotum entirely black; female copulatory tube twisted; paramere sharp at apex, with large groove................................................................... S. koreanus Jung & Yamada, sp. nov. (Korea: middle part)

- Head and pronotum dark brown to light brown; female copulatory tube curved; paramere weakly projecting at apex, with narrow groove............................................................. S. albodecussata (Japan: the Ryukyus)