Parnara species.
antennae short & the clubs thick.
UpF subapical spots 6 & 7in line; if spot 8 is present, it is usually also in line.
UnH may have a diffuse cellend spot.
UnH spot 7 is always absent.
This practically certain to be a female Arhopala milleri.
Note the longer palpi (labial palps) The abdominal end with a longer slant cut.
Compare with a male A. sublustris given below.
Three species recorded in Singapore are very similar & almost impossible to identify correctly.
A. sublustris is the most common
UnF postdiscal band uppermost spot 9 is typically dislocated & shifted inwards on the costal margin.
UnH spot 6 widest at the top & tapers down wards.
Male upperside bright blue, more reflective. Female with HW brown border wide. FW blue not reaching the tornal margin, brown border being uniformly broad https://yutaka.it-n.jp/lyc4f/82170010.html
This is likely A. sublustris male. https://www.inaturalist.org/observations/189202433
See Otsuka L206.
A. milleri. UnF postdiscal band spot 9 less dislocated ,sometime in line with the rest.
HW spot 6 as in A. sulustris
Male darkisk less reflective blue. Female UpF blue reaches tornal margin ,HW brownish blue reaches the margin. https://yutaka.it-n.jp/lyc4f/82160001.html
see Otsuka L207 for female.
A. normani . UnF spot 9 slightly dislocated.
UnH spot 6 with the side margins straighter.
Male upperside darker blue than A. sublustris.
Female as in A. sublustris. https://yutaka.it-n.jp/lyc4f/82140001.html
Otsuka L212.
The difference is in the male.
The male of Z. ogygia have streaks of specialised scales (brands) on the UpF.
The male of Z. ogygioides lacks these specialised scales.
The separation of the females is as Eliot puts it a matter of guesswork.
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