
Appearance
The pale brown wedge dividing the forewing apex identifies both sexes of this species. The male has a distinctive loop containing leaden-grey on the dorsum at one third that is separated from an 8-shaped patch of a similar grey distal to the reniform by a zone of fawn speckles on black. The ventral constriction of the 8 is produced by a distal tooth from the reniform. The male hindwings are only slightly suffused blue basal to a clearly defined, narrow, pale blue postmedial fascia.
Naming
SynonymsPotamophora ferrifracta Walker, [1863] 1864
Potamophora schlegelii Snellen, 1884
Ischyja glaucopteron Hampson, 1891
Distribution
Borneo, Peninsular Malaysia, Java, Lombok, Dammer, Thailand (VK), India, Hainan, Japan.References:
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http://www.mothsofborneo.com/part-15-16/miscellaneous_i/miscellaneousi_3_3.phphttp://www.inaturalist.org/taxa/416148-Ischyja-ferrifracta