Two s Thailand Arhopala

[DaveChiangMai]

Two more Arhopala species from Nakhon Sri Thammarat, Jun 25.
Need help to to confirm / ID.
I am pretty sure image 1 is A. zamba.
Image 2, I am not at all sure of. Maybe A. athada?
Many thanks

Zambra.JPG
Image 1.

409A3422.JPG
Image 2.

[Psyche]

https://www.butterflycircle.com/atta...8&d=1751956829
Probable Arhopala athada.
Note FW spot 9 is slightly shifted in; HW spot 6 and 7 more or less upright.

2. https://www.butterflycircle.com/atta...7&d=1751956817
Arhopala silhetensis.
Note wide spacing of bands; FW spot 9 well shifted in; HW spots 6 and 7 oblique with curvy margins.

The cleander subgroup of the cleander group comprises four large Oakblues.
They can also be quite confusing because of wide individual variations in each species.
ZAMBRA.png
Arhopala zambra.
FW spot 9 as wide or wider than spot 6 and in line with spots 4, 5, and 6.
FW costal spot 10 wide as the cellend bar and directly on top of it.
HW spots 6 and 7 usually partially oblique.
https://www.gbif.org/occurrence/2847202965
https://www.gbif.org/occurrence/2847202987
https://en.wikipedia.org/wiki/Arhopa...raFUpUnAC1.jpg
https://inaturalist-open-data.s3.ama...9/original.jpg
https://static.inaturalist.org/photo...300/large.jpeg


Arhopala cleander.
FW spot 9 more often narrower than spot 6 but more or less in line with the rest
Postdiscal band typically not dislocated at vein 4 (hidden in fieldshot).
FW spot 10 small.
HW spots 6 and 7 usually partially oblique.
https://www.gbif.org/occurrence/2847198626
https://www.gbif.org/occurrence/2847198338
https://www.gbif.org/occurrence/2847198624
https://thaibutterflies.com/Butterfl...pala-cleander/



Arhopala athada.
FW spot 9 usally shifted inwards of spot 6 or only just; spot 9 small.
FW spot 10 small.
HW spots 6 and 7 more often upright and relatively broad.
https://www.gbif.org/tools/zoom/simp...ee3db86a4e6aef
https://www.butterflycircle.com/chec...-%20horace.jpg
https://www.butterflycircle.com/chec...-%20horace.jpg



Arhopala silhetensis.
FW with wide spacing of the bands.
FW spot9 spot 9 shifted inwards.
FW spot 10 small.
HW spots 6 and 7 usually oblique with strong sinuous margins.
https://www.gbif.org/occurrence/2847203431
https://www.gbif.org/occurrence/2847203429
https://www.butterflycircle.com/chec...-%20horace.jpg
https://thaibutterflies.com/wp-conte...ylhetensis.jpg



TL Seow:Cheers.

[DaveChiangMai]

Many thanks.
I should have known silhetensis since it occurs in the north.
But not sure what to make Image 1, as it lacks spot 10 totally.?
Thanks

[DaveChiangMai]

I assume A. athada can show lack of spot 10.

[Psyche]

I assume A. athada can show lack of spot 10.

This one looks to have an injury or a developmental defect where spot 10 is.

[DaveChiangMai]

OK. Many thanks.

[Psyche]

Correction to image 1.
https://www.butterflycircle.com/atta...8&d=1751956829
Very likely to be Arhopala cleander.

I never really read in the text properly but there is some mention of A. cleander.
Here is a revised description.

Arhopala cleander.
FW spot 9 may be in line or just shifted inwards a little.
FW postdiscal band not dislocated at vein 4 (not visible at rest).
FW spot 10 may be absent.
HW spot 6 usually narrower than the spacing between spot 5 and the cellend bar.
(Typo error in C&P4 states this as interval of spot 6 and endcell bar.)

FW spot 10 is clearly absent.
HW spot 6 is somewhat rounded but is acceptable variation.


Typical.
https://www.gbif.org/occurrence/2847198628
https://www.gbif.org/occurrence/2847198620

With spot 10 weak and obscure.
https://www.gbif.org/occurrence/2847198343
https://www.gbif.org/occurrence/2847198320

With FW spot 10 absent.
https://www.gbif.org/occurrence/2847198338

TL Seow: Cheers.