Key to the males of Sulcosticta

1 Paraprocts curved dorsad or inward at tip.................................................................. 2

- Paraprocts directed or curved upward..................................................................... 4

2 Paraprocts stout, the tip curved inward, complicated structure (Fig. 8E)................................... S. viticula

- Paraprocts narrower toward the tip, acutely curved tip dorsad, simple structure..................................... 3

3 Cerci with dorsal tubercles, apically rounded (Fig. 8A)............................................... S. fliedneri

- Cerci smooth, bifurcate apically (Fig. 8B)............................................................ S. vantoli

4 Paraprocts slightly longer than cerci, with ventral robust spine (Fig. 8D)............................ S. sierramadrensis

- Paraprocts half the length of cerci, stout, bifid (Fig. 8C)................................................ S. pallida

- Paraprocts slightly shorter than cerci; cerci broad at tip (Fig. 8F).......................................... S. striata