Is this a Ionolyce helicon or a Nacduba?

[JitLeangFoo]

27428

Thanks

[Psyche]

It is a male Nacaduna berenice icena.
There is a costal spot above the innermost FW band.

Both Ionolyce helicon & Nacaduba beroe lacks this costal spot.


I. helicon.
male.
https://static.inaturalist.org/photos/38413905/original.jpeg
females.
http://3.bp.blogspot.com/-_tCoAYTboNg/UKjT1dUbUHI/AAAAAAAAHS4/um95Y_-F404/s1600/HFH0261+Pointed+Line+Blue+(female).jpg
https://i153.photobucket.com/albums/s237/jameschia26/Butterflies/IMG_8894.jpg


N beroe.
Male above, female below.
https://inaturalist-open-data.s3.amazonaws.com/photos/11323784/original.jpg
Female.
https://static.inaturalist.org/photos/120183982/original.jpeg



N. berenice icena.
Almost always have a costal spot above the innermost FW band.
FW band may also looks like I. helicon.
Males.
https://farm4.staticflickr.com/3225/2894068742_4a302635c1_z.jpg?zz=1
http://www.butterflycircle.com/checklist/mugshots/Nacaduba%20berenice%20icena/Rounded%206%20Line%20Blue%20-%20Neo%20Chee%20Beng.jpg
Females.
https://i22.photobucket.com/albums/b323/digimania/nacuduba.jpg
http://www.butterflycircle.com/checklist/mugshots/Nacaduba%20berenice%20icena/R6LB_female_01.jpg



TL Seow: Cheers.