Tamba coeruleobasis

Tamba coeruleobasis is a noctuoid moth in the family Erebidae first described by Lutz W. R. Kobes in 1989.

Characteristics
The medial area of the forewing is broadly unmarked from the irregularly black-bordered blue basal patch to the fine, irregular to zigzag paler fasciae in the marginal zone; these cross a triangular darker area at the apex.

Distribution and habitat
It is found in Borneo, Sumatra, Peninsular Malaysia in the lowlands and hill forests.