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Tai LA
02-Apr-2021, 10:15 AM
Taken in Selangor

https://i.postimg.cc/svSsncP1/FB-IMG-1617325864640.jpg (https://postimg.cc/svSsncP1)

Psyche
20-Apr-2021, 07:32 PM
Should be the female Ischyja marapok.

The HW blue band normally helpful is hidden.

The sharply dividing line between the outer & basal zones indicate a female.
Species in which the division is very sharp includes I. subreducta, paraplesius, hemiphaea, manlia & marapok.
These can be viewed here.
https://www.mothsofborneo.com/part-15-16/miscellaneous_i/gallery.php

I. subreducta can be eliminated as it is cofined to Borneo.
I. paraplesius have broad submarginal streaks.


I. hemiphaeus have a heavy dark contrasted submarginal fascia.
Female.
http://www.jpmoth.org/~dmoth/Digital_Moths_of_Asia/90_NOCTUOIDEA/02_EREBIDAE/15_EREBINAE/053_Ischyja/Ischyja%20hemiphaea/Ischyja%20hemiphaea_970906280.jpg

These leaves the females of I. manlia & marapok.

In I. manlia, the FW margin is slightly incurved & the apex slightly falcate (hooked) ; FW submarginal darker, may be spot-like, running in deeper from the apex.
https://commons.wikimedia.org/wiki/File:Ischyja_manlia_(32678412544).jpg


In I. marapok female. the FW outer margin is straighter. FW submarginal runs shallower & closer to outer margin from apex.
https://singapore.biodiversity.online/species/A-Arth-Hexa-Lepidoptera-000536


TL Seow: Cheers.