(S. flavata unknown)
1 Biocellate (Fig. 1); tergum 9 without small posteromesal lobe (Fig. 2) …………….… biocellata
1’ Triocellate; tergum 9 with small posteromesal lobe (Fig. 5) ………………………………………. 2
2 Tergum 9 spinule patch narrowly divided; tergum 10 with complete median membrane strip; Y-stem of aedeagal sclerite about as long as arms ……………………………………………... orientalis
2’ Tergum 9 spinule patch undivided (Fig. 5); tergum 10 membrane strip not reaching anterior margin; Y-stem of aedeagal sclerite about half as long as arms (Fig. 6) ……………………. bicornuata