The length of the forewings is 10–12 mm for males and 11–13 mm for females. The outer third of the forewings is gray-brown to dark gray, while the hindwings are almost entirely white.
This is one of the smallest species of Dioptinae. The name, taken from the Latin word delicatus, applies to the moth’s size and to its intricate wing pattern.
- Miller, J.S. 2009: Generic revision of the Dioptinae (Lepidoptera: Noctuoidea: Notodontidae) Part 1: Dioptini. Bulletin of the American Museum of Natural History, 321: 1-674.
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