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Blue Nawab
05-Jul-2021, 08:11 PM
Dear Dr Seow,
Pls help with the ids of the following skippers, thanks!
#1
27206

#2
27207

#3
27208

Psyche
06-Jul-2021, 12:16 AM
All three should be Potanthus omaha.
1. male 2 & 3 are females.

It is very difficult to ID Potanthus based on one view.
At least an upperside or underside HW should be visible.

No 3 have the abdominal end black but it is due to excessive wear.

Three species in Singapore have the abdominal end yellow with a thin black line/band basally.
They are P. ganda, omaha & confucius.


P. omaha ;Duller yellow brown.
Veins more noticeably darkened especially acorss the HW band on both sides.
Males.
http://www.butterflycircle.com/checklist/mugshots/Potanthus%20omaha%20omaha/272%20Potanthus%20omaha%20omaha%20(Lesser%20Dart)% 20Bobby%20Mun.jpg
http://www.butterflycircle.com/checklist/mugshots/Potanthus%20omaha%20omaha/Lesser%20Dart%20-%202%20-%20Tan%20CP.jpg
Female. Note female always have some darker shadings on the abdominal end.
http://2.bp.blogspot.com/-haPCSiByxeE/UzvTWK-9n8I/AAAAAAAANp4/XuJdzJV3AFw/s1600/DSC_0188.JPG


P. ganda; deeper orange; Veins across the HW band on both side not darken or lightly so.
Underside HW more heavily dark shaded than in P. omaha.
Males
https://farm2.staticflickr.com/1337/1049156520_ac5c42d89d.jpg
https://i1.wp.com/www.singaporegeographic.com/wp-content/uploads/2021/01/SingaporeGeographic-Lesser-Dart-1.jpg?ssl=1
Female.
http://www.butterflycircle.com/checklist/mugshots/Potanthus%20ganda/GandaDart_Adult_02.jpg


P. confucius . Veins not darken
FW band in the male with a continuous undivided appearance. All spots overlapping.
Underside band edged with darkish spots but may also be very lightly marked.
Males Thailand.
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Potanthus-confucius-1080x717.jpg
http://lh6.ggpht.com/oqIZdT5RbncTEu9eCgLx-TlgPydf0jfm1d2kErqdVYq7Kwq94h-WlSvyswjf8srdbeYWvrl7EqSSP5vZ2Hf_=s600
Males Singapore.
http://3.bp.blogspot.com/-B2W0fVicLAM/TlfLl8yaSSI/AAAAAAAAEq4/2t883dpTHBk/s400/DSC1958-Potanthus-confucius.jpg
https://inaturalist-open-data.s3.amazonaws.com/photos/135259032/large.jpg?1623329984


TL Seow; Cheers.