Udara placidula or Celastrina lavendularis

[DaveChiangMai]

A photo from Nam Nao, nc Thailand. From the lack of spot at the base of HW 7, I assume this is a Celastrina sp, and the white edges to the back spots makes me think C. lavendularis. But how to tell this apart from Udara placidula, or even U. cyma.?
A very confusing group.
Many thanks

24823

[Psyche]

Acytolepis puspa.
There is a tadpole -shaped spot at the base of HW space 7.
The haphazard arrangement of the FW postdiscal spot is usually indicative of A. puspa.
http://www.ifoundbutterflies.org/media_images/2015/233_10435-389-5672695145387-2.jpg
http://www.ifoundbutterflies.org/media_images/AcytolepisLilacea/AcytolepisLilacea_KrushnameghKunte_af852.jpg

The differences in Udara & Celastrina is in the genitalia.

Celastrina lavendularis. dark ground colour.
HW without a basal spot in space 7; Spots ringed with white ; antennal club with prominent white dot.
http://www.ifoundbutterflies.org/media_images/2015/95_3955-998-54e3697c391f7-1.jpg

Udara placidula.
HW postdiscal spot 7 black, darker than the rest; HW marginal spots & submarginal lunules less defined , the submarginals faded off at FW apex.
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Udara-placidula-1080x720.jpg
https://2.bp.blogspot.com/-K1f48uKLjtM/WYkrz99B1yI/AAAAAAAAdeQ/O4C9KVWdK04_BycZ6aOhYRjDI2kfbQiYgCLcBGAs/s1600/DSC_1494.JPG
http://www.lycaenidae.gmxhome.de/Lycaenopsis/Udara/placidulahowarthi1.jpg

Udara cyma
HW postdiscal spot 7 black & darker than the rest; Marginal & submarginal spots well=defined throughtout.
http://www004.upp.so-net.ne.jp/jamides/LycPhil/Lycaenopsis-Phil/cyma2.jpg
http://www004.upp.so-net.ne.jp/jamides/LycPhil/Lycaenopsis-Phil/cyma1.jpg

U.dilecta: HW postdiscal spot 7 not darker than the rest.
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Udara-dilecta-1080x675.jpg


TL Seow: Cheers.

[DaveChiangMai]

Many thanks for the clarification. I've been looking at the wrong dots!