Key to species of Ricanula (females) from China

1. Pregenital sternite with posterior margin almost straight, medially slightly incised (Fig. 17)............. R. unica sp. nov.

- Pregenital sternite with posterior margin convex medially..................................................... 2

2. Median portion of the posterior margin with strong process (Fig. 41).......................... .. R. hainanensis sp. nov.

- Median portion of the posterior margin without single strong process........................................... 3

3. Median portion of posterior margin with bilobate process....................................... R. pulverosa (Stål)

- Median portion of posterior margin without process (Fig. 34).................................. R. fujianensis sp. nov.