[2] However the male I. dasydisca can be distinguished by its mottled pale orange to reddish brown antennae.

[2] I. dasydisca also has large forewing scale-tufts and its hindwing shape is smoothly rounded.

[2] This species is endemic to New Zealand,[1] where it is only known from the northern half of the North Island in the Northland, Auckland and Gisborne areas.

[2] The species has been collected by sweeping and by capturing when at rest on a tree trunk.

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