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Commander
25-Feb-2017, 04:06 PM
Dr Seow, the markings on this fella appears strange. An aberration or just darker markings on some ​Potanthus sp?
24271

Psyche
25-Feb-2017, 11:10 PM
The HW spot 7 indicate it is a Potanthus .
Unfortunately Potanthus is extremely diificult to ID on pix.

This male have a broad adominal end black band.

This effectively eliminates these below. There are other features which aid the eliminations.
Potanthus omaha ,ganda, confucius .
eg. P. confucius.
http://wingscales.com/content/record/514-1-f6975.jpg
http://4.bp.blogspot.com/-HbP5kenLKN8/VIMRAEd50vI/AAAAAAAAQqs/HJJioUrfcaU/s1600/HFH_6045%2BPotanthus%2Bsp%2B.jpg
P. omaha.
http://www.butterflycircle.com/checklist/mugshots/Potanthus%20omaha%20omaha/272%20Potanthus%20omaha%20omaha%20(Lesser%20Dart)% 20Bobby%20Mun.jpg
P. ganda.
http://m8.i.pbase.com/g9/25/686825/2/154091898.SFW0w8hz.jpg


The others have the male with a broad black band.

P. trachala .very close but FW spots 4&5 without overlaps above & below.
http://4.bp.blogspot.com/-kvlAhJLLsd0/VAxf7FbehUI/AAAAAAAAQFc/hP3tC8esw5s/s1600/HFH3746-Potanthus-trachala-tytleri.jpg
P. serina distinctive appearance.
http://www.butterflycircle.com/checklist/mugshots/Potanthus%20serina/Potanthus-serina-KSK.jpg
P. juno. FW 2 subapical spots; spot 4 larger than spot 5.
https://c1.staticflickr.com/5/4053/4262747008_047e4a9a80.jpg
https://1.bp.blogspot.com/-WroJpPq0U5g/WGddN4VeO8I/AAAAAAAAQQk/yLDmI309uw8nDMBP_wvQFzx7edYEtR6IACLcB/s450/JunoDart-KohCH.jpg
P. lydia. Underside poorly dark shaded ;abdominal end often wholly black. Usually montane.
http://www.samuibutterflies.com/02_images/travels/hesperiidae/potanthuslydia.r.jpg
http://www.samuibutterflies.com/02_images/travels/hesperiidae/potanthuslydia.v.jpg
P. palnia .Underside greenish yellow dark shaded ;no black spot ;spot 4 larger than spot 5.Range India to SE Asia & Sumatra.
https://farm1.static.flickr.com/525/30709482884_4c177d7fd6_b.jpg


This leaves the two most likely.

1 . Potamthus mingo. Underside HW spot 2 & 3 with outer margins strongly concave; often with dark shading & spots.
http://3.bp.blogspot.com/-f3wB2A2ujBs/TljGL_hdu_I/AAAAAAAABdc/afUjssvXasc/s1600/_MG_1531.jpg

This below from Pulau Semakau is similar but with less black shadings.
http://s20.photobucket.com/user/wongcheeming/media/Pulau%20Semakau/IMG_9042-orangeSkipper.jpg.html
(This can not be P. flavus which is strongly greenish ochreous. with HW spot 7 small , twice the size & largely temperate & subtropical.
examples of P. flavus.
http://www9.plala.or.jp/tokyoinsects/kimadarasese2.JPG
https://farm5.staticflickr.com/4098/4741591285_045e261eb1_b.jpg )

2. Potanthus pseudomaesa . India to SE Asia & China.

P. pseudomaesa pseudomaesa :South & central India; Less overlap between spot 5 & 6.
http://www.ifoundbutterflies.org/media_images/2015/171_7165-90-55a941a69905b-4.jpg

P. pseudomaesa clio. more overlap between spot 5 & 6 on the underside; NE India to southern China.(Note amount of overlap always more on the underside)
Male. India.
https://c1.staticflickr.com/5/4065/4262601548_c221a6eca8.jpg
Male HK.
https://farm6.static.flickr.com/5346/30812971915_63c8d11786_b.jpg
http://s3.amazonaws.com/img.tnt/a3a816a2-a8f9/a441_l.jpg
Feamale HK.
https://farm8.static.flickr.com/7290/10773008133_65483f7a2c_b.jpg
https://farm6.static.flickr.com/5332/30181216564_f266333815_b.jpg



I think it is a variant of P. mingo as the outer margins of HW spots 2 & 3 are more roundly concave.

It looks almost identical to P. pseudomaesa clio though.


TL Seow : Cheers.

Commander
25-Feb-2017, 11:26 PM
Thanks for the detailed analysis, Seow. Looks like we'll need to capture some of these strange ones as voucher specimens for further scrutiny.