I was looking through some iNaturalist observations and this one seems a little different to me with the way the FW post-discal band curves: https://www.inaturalist.org/observations/71003020
Could it be N.pendleburyi? Of course without dorsals it is difficult to confirm.
There is very little correct image of N. pendleburyi
All known shows the marginal & submarginal spots/bands to be very narrow.
While the band may be curved in pendleburyi,similar bands are also seen in sanaya & subperusia, & probably several others.
I would leave it as N. sanaya since the submarginals are large.
This one has more convex submarginals and the HW post-discal and submarginal bands are close together, possible for N.subperusia lysa? No better/closer shots unfortunately. https://www.inaturalist.org/observations/124359422
I got some Arhopalas that I'm not too sure about. I know this group is really difficult for a definitive ID but any pointers would be much appreciated!
1. This should be A. silhetensis.
The two have been frequently confused as there are A. silhetensis with wider spots.
There is an error in the key line 152.
HW spots 6 & 7 are oblique, the outer edge of spot 7 is well inside the outer edge of spot 6. spot 6, outer margin sinuous, does not overlap spot 5 or the cellend bar. http://yutaka.it-n.jp/lyc4f/82240010.html
2. Arhopala milleri. The upperside of the male is less shiny indigo blue .
In general UnF spot 9 is not shifted inwards from the band or only slightly.
UnH spot 6 is wider at the top & narrower at the bottom. http://yutaka.it-n.jp/lyc4f/82160001.html
3. Probably correct as A. sublustris female . Spot 9 at the costa is often strongly dislocated & shifted inwards. UnH spot is wider at the top & narrower downwards, as in milleri.
Upperside is a bright blue. Female with the brown border of uniform width at the tornus.
4. This looks the same as 3 & is probably A. sublustris.
Other species recorded in Singapore.
A. normani.
As in sublustris, but UnH spot 6 have straighter side margins.
A. phanda. UnH spot 6 & 7 blocky large arranged like a column.
A. aroa. Underside bands narrow, thus widely spaced apart.
UnH spot 6 triangular, with the point on thecellend bar.
Three other species in P. Malaysia, A selta, phaenops, & evans have UnH spot 6 not tapered downwards.
Shot a alea subgroup member at MacRitchie Nature Trail today, managed to get a shot that shows some of the uppersides. Would this be 'bright blue' or 'matt blue'? In person it seemed as a pretty dark blue to me as it was flying, but I don't really have a good baseline to compare the colours with.
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