Izatha dulcior is a species of moth in the family Oecophoridae.

This species is classified as "At Risk, Naturally Uncommon" by the Department of Conservation.

I. dulcior is the first lepidoptera species described as endemic to the Poor Knights Islands.

B. Hoare in 2010 using a specimen collected at the Tawhiti Rahi South Ridge on Poor Knights Island on the 3 December 1980 by R.H.

[2] This species has been classified as having the "At Risk, Naturally Uncommon" conservation status under the New Zealand Threat Classification System.