Request for ID: Potanthus rectifisciatus ?

[Silverstreak]

Dr. Seow ,

Your kind assistance please ! :)

Ray Cannon shot this at Doi Sutep Pui NP, Chiang Mai, Thailand, on Wednesday, 1 November 2017.

He suspects this might be the Potanthus rectifisciatus

My comments were :

Two of the Potanthus that lack UPH spot 7 in Thailand are P. rectifasiatus and P. pamela and both have brand running from vein 1b to 4.

Description from Butterflies of the Malay Peninsula on P. rectifasciatus :

The narrow and deeply excavated post-discal band on the forewing is composed of spots with the outer edges in line in both sexes.

The hindwing post discal band is distinctive in lacking the usual spots 7 on the upper surface.

The male of this species and of the much rarer P. pamela has a discal stigma running from vein 1b to 4 on the forewing above.

The only problem I have with the posted specimen is the UPF post-discal band are not deeply excavated on the outer edges and the lack of a tiny spot 6 normally conjoined with spot 5 on the UNH .

This could very well be a Potanthus pamela than a Potanthus rectifiasiatus.

There are also two Telicotas that have similar characteristic as exhibited in this specimen, namely :

Telicota ohara ( male )

Telicota linna

24991

24992

[Psyche]

I presume the two pix are of one skipper.
It is a male Telicota linna.
FW base of space 2 is black thus excluding T. colon, augias & besta.

There is a straight thick grey brand from vein 1b to vein 4 (same for all Telicota)

T. linna large spp. FW 18-19mm.brand thicker , straight ; FW spots form a comparatively narrow band.
http://2.bp.blogspot.com/-wU0gNp51E3U/VgOg89qI7cI/AAAAAAAAOQg/t1opVeXR03U/s1600/Telicota-linna-Males---Horace-Tan.jpg

T. bambusae smaller, FW 14-15mm. Brand thicker & straight ; FW short & spots in space 1b, 2 & 3 comparatively broad.
http://www.flutters.org/home/photogallery/plog-content/images/butterfliesbrnbspnbspnbsphesperiidae-the-skippers-br/subfamily-hesperiinae--brnbspnbspnbsp-genus-cephrenestelicota--palm-dart-/dark-palm-dart__telicota-ancilla_ashish-tiple.jpg

T. ohara large FW 19-20 mm. FW brand very narrow & straight.
http://dearlep.tw/images/Papilionoidea/Hesperiidae/DSC_6198%E9%9B%84_1.jpg

P. rectifasciatus FW spots almost in a straight line (less so on the Un.) FW brand obscure but hugging inner margin of spot 1b ,2, & 3
HW with a large spot 6. UnHW with spot 6 & 7 prominent.
Example from Cambodia .(Malayan examples with smaller markings)
https://farm5.static.flickr.com/4585/38661764476_5a39db4bb7_b.jpg
https://farm5.static.flickr.com/4583/38716918641_9fe59687f5_b.jpg
https://farm5.static.flickr.com/4563/26941566369_350759b8dd_b.jpg

P. pamela Upperside similar to P. rectifasciatus.
Un.HW with spot 7 rather vaque.
This female below has been set & shown to be P. pamela.
(Correction:This example is probably just a female P. rectifasciatus with light markings UnHW spot 7 is not obscure.)
http://nlliew66butterflies.blogspot.my/2017/05/potanthus-pamela-evans.html


TL Seow: Cheers.

[Silverstreak]

Much appreciated Dr Seow wishing you a Prosperous and Healthy 2018 ! :)

[Psyche]

Same to you ,Sunny.

TL Seow: Cheers.