1 | Diverticulum present in the ductus bursae; vesica with 4 - 5 cornuti differing in length (20% - 50% of the length of the phallus); apical bands present in the hind tarsi…………………… | S. traducalis |
- | Diverticulum absent in the ductus bursae; number of cornuti smaller than four or significantly greater than five; apical bands absent in the hind tarsi……………………………………………... | 2 |
2 | Colliculum present; antrum strongly sclerotized transversally; posterior ductus bursae strongly sclerotized; basal sacculus ventrally projected; vesica with three cornuti, grouped into an elongate one and two shorter ones equal in length; coecum strongly sclerotized………………………………………………… | S. fifensis |
- | Colliculum absent; antrum bare from sclerotization; basal sacculus unprojected; vesica with numerous short cornuti; coecum weakly sclerotized…………………………………………. | S. seychellensis |