Euchromius nigrobasalis is a species of moth in the family Crambidae. It is found in Zimbabwe and South Africa.Revision of the species of the genus Euchromius Guenée, 1845 (Lepidoptera: Pyralidae: Crambinae) occurring in the Afrotropical region
The length of the forewings is 12–16 mm. Adults have been recorded in October and November.
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