Euclasta gigantalis is a species of moth in the family Crambidae. The female has a wingspan of 45mm.Amsel, H. G. 1963. Kleinschmetterlinge aus Äthiopien. - Stuttgarter Beiträge zur Naturkunde 121:1–12.
Distribution It is found in Ethiopia, Kenya, La Réunion and Madagascar.afromoths
In 1988 this moth was also released in Australia for biological control of Cryptostegia grandiflora.
Biology The larvae feed on Camptocarpus mauritianus, Cryptostegia grandiflora, Cryptostegia madagascariensis (Apocynaceae) and Clerodendrum heterophyllum (Lamiaceae).Guillermet, 2009a. Les Hétérocères, ou papillons de nuit, de l'île de La Réunion. Volume 3. Familles des Pyralidae et Crambidae. - — :1–552, pls. 1–11.
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