- Macropsis basalis, Pediopsis basalis
- Siphloplecton basale, Baetis basalis Walker, 1853;Heptagenia basalis;Siphloplecton flexus;Siphloplecton signatum Traver, 1932;Siphlurus flexus Clemens, 1913;Medium speckled lake olive;Great speckled lake olive;Great speckled olive dun
- Stictocephala basalis, Ceresa basalis;Ceresa melanogasater Osborn, 1893;Ceresa turbida Goding, 1893;Stictocephala semibrunnea Buckton, 1902
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