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View Full Version : Arhopalas from Inthanon - confirmation of ID



DaveChiangMai
06-Apr-2019, 11:45 AM
Three different Arhopala from Doi Inthanon, at about 1,200 metres. Provisionally identified. Please could these be confirmed (or otherwise). With thanks.

Image 1. Arhopala bazalus
25657

Image 2. Arhopala alax. Based on forewing spots not particularly lunulate.
25658

Image 3 (and next image 4). Same individual. I think Arhopala agaba.
25659

Image 4 (same as image 3)
25660

Psyche
06-Apr-2019, 05:03 PM
1. Arhopala bazalus.
A. bazalus have heavy markings ,HW spots 5, 6, & & cellend bar large similar to agaba ; HW withthe tornal half heavily darkened & a plaer zone around the apex.
http://www.ifoundbutterflies.org/media_images/2016/137_11489-442-56fa6d3c2e0b1-1.jpg

2. Arhopala atrax.See Yutaka field shot 4 & examples from BoI.
A. atrax & alax can be confusingly similar.

A, atrax ;spots typically lunulate ;HW postdiscal band (comprising spots 2, 3, 4, & 5) out of line.
http://yutaka.it-n.jp/lyc4/82070001.html
http://www.ifoundbutterflies.org/sp/1135/Arhopala-atrax
http://www.ifoundbutterflies.org/media_images/2017/436_18252-959-591c0f792bc5c-2.jpg


A. alax much rarer; FW & HW postdiscal spots with mostly straight margins; HW postdiscal spots 2, 3, 4, & 5 with the margins in line.
http://yutaka.it-n.jp/lyc4/82080001.html
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Arhopala-alax-1.jpg


3 & 4. Arhopala alea. Correction: Doubtful ID. Arhopala alea does not seem to be recorded in Thailand . Arhopala silhetensis.
HW with spot 5 & cellend bar far apart.
http://www.ifoundbutterflies.org/#!/sp/644/Arhopala-alea

A.agaba; HW spot 5 & cellend bar fused or touching ; apical areas of both wings whitened.
http://yutaka.it-n.jp/lyc4/82260001.html
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Arhopala-agaba-1080x721.jpg

A. aurelia; HW spot 5 & cellend always separated; Apical areas not white shaded.
http://yutaka.it-n.jp/lyc4/82100001.html


TL Seow: Cheers.

DaveChiangMai
06-Apr-2019, 08:15 PM
Many thanks for the details. One out of three I got correct, so still a way to go!

Psyche
07-Apr-2019, 12:06 AM
3 & 4 . Arhopala silhetensis. variant.

Arhopala silhetensis have the wide spacing between HW spot 5 & the cellend bar.
Normally spot 6 is narrow & sinuous but there are variants, probaaly dsf.
The other indicator is the dark wavy band just above the tail-base. This is hardly seen in other Arhopala.

A. silhetensis normal wsf Singapore.
http://www.butterflycircle.com/checklist/mugshots/Arhopala%20silhetensis%20adorea/Sylhet%20Oakblue%20-%20khew.jpg
Variants from Thailand & India.
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Arhopala-sylhetensis-1080x675.jpg
http://www.ifoundbutterflies.org/media_images/2014/97_562-669-54354539c2516-2.jpg


TL Seow: Cheers.