Chiangmai 7-12 Oct 2019

[Psyche]

Post 5.
There are about 20 species of Potanthus species in Thailand & their IDs can be very difficult from fieldshots.


Potanthus no. 1; Male on the left ,female on the right.
Male abdominal end not black-banded ,FW spots overlapping HW spot 6 absent; Female FW spots no overlap between spot 5 & 6; HW spot 6 present.
Underside dark shaded.

Three species have the abdominal end yellow without a black band. namely P. omaha, ganda & confucius.

P. omaha ;HW band the veins dark-dusted, shading light.
http://www.butterflycircle.com/check...obby%20Mun.jpg

P. ganda; HW band the veins not dark=dusted ;heavier dark shading.
P. ganda is normally quite oranging but it difficult to judge in fieldshots.
Male from P. Malaysia; female from Singapore.
https://2.bp.blogspot.com/-r1T4ajMPu...25286%2529.jpg
https://3.bp.blogspot.com/-8xXyOhBOa...Dart-KohCH.jpg

P. confuciusFW spots broadly overlapping; HW underside usually with spot 6; Band edged with definite dark spots.
Male Thailand female from Taiwan.
https://wingscales.com/content/record/514-1-f6975.jpg
http://dearlep.tw/images/Papilionoid...20DSC_0068.jpg


No. 1 should be Potanthus ganda.
You can see the the respective sexes match.



2. FW with spot barely overlap spot 3 while spot 5 is detached from spot 6. FW spot 2 & 3 wider.Abdominal end with a black band.
This should be P. pseudomaesa.
Examples.
http://images5.fotop.net/albums/butt...seudomaesa.jpg
https://www.ifoundbutterflies.org/me...d7f5f8902c.jpg
https://www.ifoundbutterflies.org/me...deea639e-1.jpg
https://www.ifoundbutterflies.org/me...1a69905b-4.jpg

Similar.
P. lydia;
FW spot 4 & 5 often convergent on their inner margins.; FW cell more heavily dark.
https://www.ifoundbutterflies.org/me...07a03494-1.jpg
http://www.samuibutterflies.com/02_i...huslydia.r.jpg

P. serina ;FW spot 5 distinctly smaller than spot 4; HW with a small spot 6 on inner corner.
https://singapore.biodiversity.onlin...96bb1e9322.jpg

P. palnia; FW spot 5 smaller than spot 4; band more strongly divided by dark veins.
https://farm5.static.flickr.com/4566...3350f458_b.jpg

P. trachala have the FW band uniformly narrow & the outer margins strongly excavated.
http://3.bp.blogspot.com/_yzw2AzY2du...anthusM01a.jpg


TL Seow: Cheers.