| | | Kind of type | Full locality |
| | | holotype of synonym Gastrimargus fallax Sjöstedt, 1928 | East Tropical Africa, Tanzania |
| | | holotype of subspecies Gastrimargus determinatus vitripennis (Saussure, 1888) | Southern Africa, Cape Province |
| | | holotype of synonym Gastrimargus femoralis Sjöstedt, 1928 | Southern Africa, Transvaal, Gauteng: Pretoria |
| | | holotype of synonym Gastrimargus volkensi minor Sjöstedt, 1928 | East Tropical Africa: Lake Victoria: Bugalfi |
| | | holotype of synonym Gastrimargus pallidus Sjöstedt, 1928 | East Tropical Africa, Uganda: Lake Victoria, Ssese Islands, Bugala |
| | | holotype of synonym Gastrimargus volkensi Sjöstedt, 1910 | East Tropical Africa, Tanzania: Meru plains |