Koh Phangan & Thailand Moths 2013

[Psyche]

Yup. I noticed that. Not so many info on those moths. Thank you !

The Retina species with a red costal band are only found far north eg. Vietnam, China.

In a check on the Chalcosiinae types of pattern only 2 genera have a red costal band.
The other is Rhodopsona which is largely sympatric to the red Retina.
Note below is PDF of Chalcosiinae classification. page 195 for patterns, 198-199 for Rhodopsona Type I pattern.
http://hbs.bishopmuseum.org/fiji/pdf/yen-etal2005.pdf

Example of Rhodopsona costata. Vietnam,
http://www.boldsystems.org/pics/_w30...1352480708.jpg

One species with a red costal stripe extends down to the Malay Peninsula, Rhodopsona bocki.
By inference it is likely to be this species.
No pix available.

TL Seow