Key to the species of Scotiophyes based on male genitalia

1. Socius free; valva with a strong bladelike process ...................................................................... S. nebrias

- Socius fused with gnathos; valva without bladelike process ..................................................................... 2

2. Uncus slender distally ................................................................................................................................ 3

- Uncus subtriangular, gradually narrowed towards apex..................................... S. subtriangulata sp. nov.

3. Sacculus prominent ventrally near base ................................................................................... S. faeculosa

- Sacculus smooth ventrally near base ..................................................................................... S. hemiptycta