| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Sijua parvula | Whalley, 1971 | species | Accepted | ||
| Sijua plagalis | (Gaede, 1917) | species | Accepted | ||
| Sijua plagialis | (Gaede, 1929) | species | Misapplied | ||
| Sijua sigillata | (Warren, 1898) | species | Accepted | ||
| Silosca comorensis | Gozmány, 1968 | species | Accepted | ||
| Silosca hypsocola | Gozmány, 1968 | species | Accepted | ||
| Silosca licziae | Gozmány, 1967 | species | Accepted | ||
| Silosca mariae | Gozmány, 1965 | species | Accepted | ||
| Silosca savannae | Gozmány, 1968 | species | Accepted | ||
| Silosca somnis | Gozmány, 1967 | species | Accepted | ||
| Silosca superba | Gozmány, 1967 | species | Accepted | ||
| Simesia critobulus | (Fawcett, 1916) | species | Synonym | ||
| Simesia dasychiroides | (Butler, 1898) | species | Accepted | ||
| Simesia olmii | (Berio, 1937) | species | Synonym | ||
| Similipepsis ekisi | Wang, 1984 | species | Accepted | ||
| Similipepsis eumenidiformis | Bartsch, 2008 | species | Accepted | ||
| Similipepsis gansoni | Gorbunov, 2023 | species | Accepted | ||
| Similipepsis maromizaensis | Bartsch, 2008 | species | Accepted | ||
| Similipepsis murzini | Gorbunov, 2023 | species | Accepted | ||
| Similipepsis osuni | Bakowski & Kallies, 2008 | species | Accepted | ||
| Similipepsis typica | (Strand, 1913) | species | Accepted | ||
| Similipepsis violaceus | Le Cerf, 1911 | species | Accepted | ||
| Similisynagris aurea | (Gaede, 1929) | species | Accepted | ||
| Similisynagris kapanga | Gorbunov, 2023 | species | Accepted | ||
| Simplicia borbonica | (Guillermet, 2005) | species | Accepted |