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View Full Version : Separation of Arophala birmana and A. paraganesa



DaveChiangMai
21-Jul-2024, 05:46 PM
I am looking for a reliable feature to separate A. birmana and paraganesa. I have a feeling some of my identifications are not correct.
This one was photographed at Omkoi, nw Thailand, Jul 2024. Dry Dipterocarp forest at 950 m. I'm not now sure which species.
Many thanks.

28559

Psyche
21-Jul-2024, 09:11 PM
This one is Arhopala birmana.

28560

Arhopala birmana.
FW postdiscal brown band & the adjacent pale whitish band are strongly dislocated at vein 4.
https://yutaka.it-n.jp/lyc4f/82500001.html


Arhopala paraganesa.
FW postdiscal band only slightly dislocated at vein 5, so it & the adjacent whitish discal bands have mostly regular margins.
https://yutaka.it-n.jp/lyc4f/82520010.html


Arhopala ganesa.
FW postdiscal band more strongly dislocated at vein 5 so it & the whitish discal band are angled on their common margin at vein 5.
HW ground colour more brownish & less contrasted.
FW apex hooked.
https://yutaka.it-n.jp/lyc4f/82510010.html


TL Seow: Cheers.

DaveChiangMai
21-Jul-2024, 09:20 PM
Many thanks for that, which confirmed my suspicions. Fortunately I don;t have to worry about ganesa in Thailand.