Pantoporia hordonia or sandaka?

[horace2264]

Shot this specimen in the central catchment reserve. The grey fascia and the orange submarginal line are nearly equal in width, making it difficult to decide which Pantoporia sp. it belongs to.

[Psyche]

This certainly looks good for a female P. hordonia.
The grey line is thicker in most of its length & not interrupted.

A male P. hordonia from Raub ,Malaya. Note longer foot than a female.
http://4.bp.blogspot.com/-6TIVtGI_okk/U3dZiNWZG2I/AAAAAAAAOdc/ONasPwcgx60/s1600/DSC_0229.JPG

A female hordonia from Singapore, Federick' shot.Note short foot; prominent grey line uninterupted.
http://1.bp.blogspot.com/_0EK80AsaR7g/SjpsuZKrvSI/AAAAAAAAA-4/JSRS1ko6pPM/s400/DSC0088-Pantoporia-hordonia.jpg

A definitive Singapore P. sandaka male. Federick.
Note long foot ;Grey line almost obsolete; cellular bar not notched at upper margin.
https://farm2.staticflickr.com/1187/1048295585_dbdb16cd75.jpg

Definitive female P. sandaka Singapore, Federick.
Grey line constricted & interrupted ; short foot; cellular bar notched.
http://www.butterflycircle.com/checklist/mugshots/Pantoporia%20hordonia%20hordonia/Common%20Lascar%20-%20Federick%20Ho.jpg

TL Seow:cheers:
PS. A definitive male P. sandaka from Raub, Malaya for comparison. Note here cellular bar is notched; orange line appeared narrow; grey line rather obscure.
http://4.bp.blogspot.com/-N4hHveKQt1A/Une7R-mginI/AAAAAAAALd8/cifccgD7ZOw/s1600/DSC_0131.JPG
PS2. This male MNT 2009 by Federick looks right for a hordonia male . The grey line is wider but irregular
http://3.bp.blogspot.com/_0EK80AsaR7g/SxkZYrw948I/AAAAAAAACJg/FtEX9Sa-D2E/s400/DSC_1880-Common-Lascar@MNT.jpg

[horace2264]

Thanks, Dr Seow for the Pantoporia ID and the detailed list of the various related pics. :)

[Silverstreak]

Shot this in the recent December trip in Chiang Dao, Chiang Mai , Thailand.

From the descriptions so far on subject matter , this appears to be a Pantoporia

http://i13.photobucket.com/albums/a288/SunnyChir/Bin/Sunny-Chir-1DX-2014_12_07--1220141434_zps95b63c44.png (http://s13.photobucket.com/user/SunnyChir/media/Bin/Sunny-Chir-1DX-2014_12_07--1220141434_zps95b63c44.png.html)

Closeup of forewing upper left apical area

http://i13.photobucket.com/albums/a288/SunnyChir/Bin/SNAG_Program-0905_zpsbd40a984.png (http://s13.photobucket.com/user/SunnyChir/media/Bin/SNAG_Program-0905_zpsbd40a984.png.html)

[Psyche]

Up north the picture is complicated by dsf & wsf as well as intermediates.

Generally if the grey band is interrupted ie broken into separate grey spots it should be P. sandaka.
So this looks like it.
The subspecies in the northern region, of P. sandaka is davidsoni but but probably intermediates with ssp sandaka occurs.
Dsf have wider orange bands.

Typical male P. hordonia hordonia & P. sandaka sandaka , Malaya.(wsf)
http://www.learnaboutbutterflies.com/Pantoporia%20hordonia%20001a.jpg
http://4.bp.blogspot.com/-N4hHveKQt1A/Une7R-mginI/AAAAAAAALd8/cifccgD7ZOw/s1600/DSC_0131.JPG

Indian P. h. hordonia dsf (taken in November )
http://www.ifoundbutterflies.org/media_images/PantoporiaHordonia/03PantoporiaHordonia_KrushnameghKunte_aa859.jpg

Indian P. sandaka davidsoni wsf taken in June.
http://upload.wikimedia.org/wikipedia/commons/c/cf/Common_Lascar-DSC_0834.jpg
Indian P. sandaka davidsoni dsf. Note the peripheral bands are connected in both dsf & wsf here.
http://www.projectnoah.org/spottings/21393107

Thailand P. hordonia hordonia male & female (labelled dsf but is typical wsf ,taken in June.)
http://www.insect-hunter.com/threads/pantoporia-hordonia-common-lascar-%E0%B8%9C%E0%B8%B5%E0%B9%80%E0%B8%AA%E0%B8%B7%E0%B 9%89%E0%B8%AD%E0%B8%81%E0%B8%B0%E0%B8%A5%E0%B8%B2% E0%B8%AA%E0%B8%B5%E0%B9%81%E0%B8%94%E0%B8%87%E0%B8 %98%E0%B8%A3%E0%B8%A3%E0%B8%A1%E0%B8%94%E0%B8%B2.4 36/

The two species can be very confusing.
The Taiwanese taxon rihodona is considered a ssp of P. hordonia.
Run the male thru the key of C&P4 and it appears to be P. sandaka.
http://taibif.tw/zh/namecode/347182

The males have similar genitalia.

TL Seow:cheers:

[Silverstreak]

Thanks Dr. Seow for the explanation and references ! :)