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DaveChiangMai
09-Apr-2021, 05:58 PM
A couple of Arhopala species from southern Thailand (Phang-nga), lowland primary forest.
I have little experience with these southern species, so would be very grateful for confirmation/correction.
I think the first is A. barami, and the second might be A. epimuta.
With thanks.

Image 1.
26920

Image 2.
26921

Psyche
09-Apr-2021, 11:08 PM
image 1.
Should be correct as Arhopala barami.

THe FW postdiscal spots are visible, counting upwards are spot 2 (partly hidden by the HW), 3, 4 (slightly sifted out) 5, 6, & 9.

Two species are very similar in the following features.

HW postdiscal band partially dislocated. at vein 2 , spot in 1b (V-shaped) overlapping spot 2.
FW without costal spot.
FW postdiscal band with spots 4, 5, 6, & 9 (the upper four) more or less in line.

A. barami ;FW band more or less continuous, & not dislocated at vein 4 (ie the vein below spot 4).
https://species.wikimedia.org/wiki/Arhopala_barami#/media/File:BaramiBethBak1903OD.jpg
https://lh3.googleusercontent.com/proxy/3A9iWK_Jv_WnnvQzMzbDG4EQ6gYIs4v1pcxAW30McXUr-v2TE59g7rFzQEaOjOZZeJqByiEAxME2UB1JKXsR7MHZ1NL_eA

A. vihara: FW postdiscal band distinctly dislocated at vein 4.
https://en.wikipedia.org/wiki/Arhopala_vihara#/media/File:ArhopalaViharaViharaMUpUnAC1.jpg


Image 2 should be Arhopala antimuta.

HW postdiscal spot 6 astride spot 5 & the cellend bar, spot 7 on top of it. HW postdiscal band may be partially or fully dislocated ( fully dislocated here).
FW postdiscal spot 4 barely dislocated out.
https://thaibutterflies.com/wp-content/uploads/2016/07/Arhopala-antimuta.jpg

A. epimuta.
FW postdiscal band's spot 4 dislocated out from the other spots.
HW postdiscal spots 5, 6, 7 staggered, each higher spot set deeper inwards towards base than the one below.
Tornal cilia usually with a white dot.
https://thaibutterflies.com/wp-content/uploads/2016/07/Arhopala-epimuta-1080x675.jpg



TL Seow: Cheers.

DaveChiangMai
09-Apr-2021, 11:30 PM
Many thanks for the corrections, confirmations and details.