Arhopala lurida hanging on in Singapore.

A recent observation has to be Arhopala lurida.

Both A. atosia & lurida were recorded in the past in Singapore.
Urbanisation & decreasing greenery mean small colonies soon disappear except in the central forested area.

https://static.inaturalist.org/photo...1839/large.jpg
https://www.inaturalist.org/observations/238870040

The butterfly is very similar to A. pseudomuta .
The key is that UnH spot 7 is inwards (towards the base) of spot 6 so that its inner margin is farther in.
In A. pseudomuta spot 7 is directly above spot 6, its margins lies within that of spot 6.
https://www.butterflycircle.com/chec...1---Horace.jpg

Arhopala atosia.
The postdiscal spots are almost the same colour as the ground & contrast little.
Males.
https://www.butterflycircle.com/chec..._atosia_02.jpg
https://www.butterflycircle.com/chec..._atosia_01.jpg
https://geenature.com/observations/61453176
https://www.inaturalist.org/observations/228233363
https://www.inaturalist.org/observations/61453173
Male- left.
https://www.inaturalist.org/observat...ity_assessment
Male disc is large covering space 2 & 3 plus parts of space 1b & the cell.
https://upload.wikimedia.org/wikiped...aMFUpUnAC1.jpg


Arhopala lurida.
Markings more contrasted & ground also typically darker.
In Langkawi this is more obvious.
https://www.inaturalist.org/observations/223492314
https://thaibutterflies.com/Butterfl...hopala-lurida/
This female below was corrected by Yutaka to A. lurida.See website.
https://thaibutterflies.com/Butterfl...hopala-atosia/
https://yutaka.it-n.jp/lyc4f/81820001.html
Male with a smaller disc covering mainly space 2 & 3.
https://en.wikipedia.org/wiki/Arhopa...daMUpUnAC1.jpg
This male is wrongly labelled. It should have been A. lurida.
https://ms.wikipedia.org/wiki/Arhopa...naMUpUnAC1.jpg
These look correct as A. lurida.
https://nlliew66butterflies.blogspot...da-corbet.html



TL Seow: Cheers.

https://static.inaturalist.org/photo...1839/large.jpg

Although going by the key this comes out as Arhopala lurida, mainly because of the position of HW spot 7, a number of features suggest this may be merely a variant of Arhopala pseudomuta.

These features are.
1. It is a common feature in pseudomuta for the FW spot 4 to be strongly dislocated out.
This much less in lurida.

2. UnH spot 6 is rounded in pseudomuta but more angular in lurida.

3. The green metalmark in pseudomuta is less sharp & flanked by a fuzzy strip.
It is well-defined in lurida.


Examples of A. pseudomuta.
https://thaibutterflies.com/wp-conte...pseudomuta.jpg
https://www.butterflycircle.com/chec...-%20Horace.jpg
https://inaturalist-open-data.s3.ama...7583/large.jpg
https://inaturalist-open-data.s3.ama...6356/large.jpg
Examples of A. lurida.
https://thaibutterflies.com/wp-conte...a-lurida-2.jpg
https://thaibutterflies.com/wp-conte...ala-lurida.jpg
https://yutaka.it-n.jp/npict14f/81820001_n001.jpg

This individual have a number of unresolved uncertainties.



TL Seow: Cheers.