ID KEYS: Attatha spp.

Attatha ino differs from Attatha regalis vide Hampson as under:

-oblique band of the forewing being quadrate from costa to median nevure in Attatha ino, where its outer edge is angled.
-apical triangular patch is wider in Attatha regalis so as to extend close to the post-medial and the margin. The opposite is mentioned in Hampson. 

Page citation

Singh, R. 2024. ID KEYS: Attatha spp. . In Sondhi, S., Y. Sondhi, R.P. Singh, P. Roy and K. Kunte (Chief Editors). Butterflies of India, v. 3.74. Indian Foundation for Butterflies.