The blue males of three Tanaecia species also placed under the genus Cynitia are often confused in the field.

TANAE.png
Tanaecia godartii.
HW band about 1/3 HW width, tapering upwards.
The inner borders of both FW and HW bands always aligned well at rest.
https://www.gbif.org/occurrence/2847206826
https://www.gbif.org/occurrence/2847204935
https://www.gbif.org/occurrence/4055003217
https://www.gbif.org/occurrence/4172306708


Tanaecia flora.
HW blue band about 2/5 HW width at tornus, yapering upwards.
The inner borders of both blue bands usually aligned well at rest.
The female is blue-banded.
https://www.gbif.org/occurrence/2847205003
https://www.gbif.org/occurrence/2847206829
https://www.gbif.org/occurrence/2242800920
https://www.gbif.org/occurrence/2242799810
Female.
https://www.gbif.org/occurrence/5007193037



Tanaecia iapis ( more correct as T. cocytina.)
HW blue band about 2/5 at tornus , not tapering being roughly of uniform width.
Inner borders strongly irregular and typically do not align at rest.
https://www.gbif.org/occurrence/2847204949
https://www.gbif.org/occurrence/2847204963
https://www.gbif.org/occurrence/4424106808
https://www.gbif.org/occurrence/1898830171
With the inner borders 'aligned'.
https://www.gbif.org/occurrence/5069957105


TL Seow: Cheers.