Bastilla arcuata

http://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=373265
https://en.wikipedia.org/wiki/Bastilla_arcuata
MOT vol 3, pl 20/17.
Hampson Vol 2, # 2500, pg 499 mentioned as Ophiusa arcuata (error in spelling).
http://www.mothsofborneo.com/part-15-16/ophiusini/ophiusini_8_9.phpSimilar species
Bastilla dicoella lacks the basal narrow whitish line.
Bastilla amygdalis
From Moths of Borneo
Diagnosis. This and the next species are similar to the previous few but can be distinguished by their having an angle in the distal edge of the costal trapezoidal mark; this is more acute in arcuata Moore. The two are best distinguished from each other by the forewing antemedial: straight in amygdalis, with ground colour uniform across it; sinuous in arcuata with the ground colour darker basal to it.