ID Requests - Peninsular Malaysia by SLLIew - Sep 26, 2025

Hi Dr. Seow,
Requesting your help to confirm id of my recent observations Thank you.

#1 Chersonesia rahria? intermedia? Gua Tempurong, Perak - Sep 9, 2025
https://www.inaturalist.org/observations/312710342

#2 Nacaduba sp? Gua Tempurong, Perak - Sep 9, 2025
https://www.inaturalist.org/observations/312710344

#3 Curetis sp? Batu Berangkai, Kampar, Perak - Sep 9, 2025
https://www.inaturalist.org/observations/312821972

#4 Arhopala sp? Penang Botanic Gardens - Sep 11, 2025
https://www.inaturalist.org/observations/313211066

#5 Pelopidas mathias? Balik Pulau, Penang - Sep 17, 2025
https://www.inaturalist.org/observations/314544547

#6 Grass skipper? Penang Botanic Gardens - Sep 19, 2025
https://www.inaturalist.org/observations/314972531

#7A Hasora sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315502878

#7B Hasora sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315502879

#8 Isma sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315502949

#9 Arhopala sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315502957

#10 Arhopala sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315502977

#11 Arhopala sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315502984

#12 Zeuxidia sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315503005

#13 Arhopala sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315503016

#14 Arhopala sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315503049

#15 Allotinus sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315503059

#16A Allotinus sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315503050

#16B Allotinus sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315503058

#17 Potanthus sp? Sungai Sedim, Kedah - Sep 20, 2025
https://www.inaturalist.org/observations/315645554

#18 Appias albina? Perlis State Park - Sep 23, 2025
https://www.inaturalist.org/observations/316288243

#19 Grass skipper? Perlis State Park - Sep 23, 2025
https://www.inaturalist.org/observations/316288244

#20 Grass skipper? Wang Kelian, Perlis - Sep 23, 2025
https://www.inaturalist.org/observations/316288251

#21 Appias? Perlis State Park - Sep 23, 2025
https://www.inaturalist.org/observations/316288262

#22 Flos sp? Penang Hill - Sep 25, 2025
https://www.inaturalist.org/observations/316530796

#23 Grass skipper? Penang Hill - Sep 25, 2025
https://www.inaturalist.org/observations/316530801

#24 Grass skipper? Penang Mainland - Sep 26, 2025
https://www.inaturalist.org/observations/316713712

Cheers from Penang, SL Liew

1.https://www.inaturalist.org/observations/312710342

Chersonesia intermedia.


C. rahria is readily recognised by a dark curved fascia crossing the FW apwx.
https://www.flickr.com/photos/gancw1/21923910758

C. intermedia does not have this fascia.
https://wingscales.com/Nymphalidae/C...dia-intermedia

Note below 1st image is C. rahria, 2nd image C. intermedia.
https://wingscales.com/Nymphalidae/C...-rahria-rahria



2. https://www.inaturalist.org/observations/312710344
Too vague and blur, but looks like N. berenice.




3. https://www.inaturalist.org/observations/312821972
curetis felderi.
C. felderi have the palpi white and not spotted with red or orange, but this need good resolution to see.

UnH postdiscal spot 7 is large ,crecentic and spot 6 small & tucked well inwards.
This is somewhat similar tp that of C. bulis but more prominent.
The FW orange is large and the black border does not run much inw3ards along the lower margin.
This is clearly seen here.
https://yutaka.it-n.jp/lyc3/84080001.html
https://en.wikipedia.org/wiki/Cureti...riMUpUnAc1.jpg
https://www.gbif.org/occurrence/2847201383
https://www.gbif.org/occurrence/2847199208

C. santana & bulis have a much smaller FW orange with the black running well in along the lower margin.
they seem to have been well confused as there are many mislabelle3d images.

C. santana. HW space 6 more than half orange as seen in set specimens.
https://yutaka.it-n.jp/lyc3/84050010.html
C. santana misIDed as C. bulis.
https://www.gbif.org/occurrence/2847199202
https://www.gbif.org/occurrence/2847199210
https://www.gbif.org/occurrence/2847199211


C. bulis HW space 6 more than half its length black.
https://yutaka.it-n.jp/lyc3/84030010.html
https://www.gbif.org/occurrence/2847201369
C. bulis misIDed as C. santana.
https://www.gbif.org/occurrence/2847199190
https://www.gbif.org/occurrence/2847199195
https://www.gbif.org/occurrence/2847199196

4.https://www.inaturalist.org/observations/313211066
Too blur and worn.
The staggered position of HW spots 6 & 7 suggest epimuta group.
Three main species, A. epimuta, atosia and lurida.



5. https://www.inaturalist.org/observations/314544547
The dull grey-tinged underside suggest Pelopidas mathias.




6. https://www.inaturalist.org/observations/314972531
The FW spots suggest a Halpe species.



7a. https://www.inaturalist.org/observations/315502878
7b .https://www.inaturalist.org/observations/315502879

Both are probably Hasora chromus.

The more uniformly narrow white band suggest this.
The subapical spot is usually absent (usually present in H. vitta.).



8.https://www.inaturalist.org/observations/315502949
Probably Zographetus ogygia.
https://yutaka.it-n.jp/hes/91760001.html
https://yutaka.it-n.jp/hes/91780001.html


It does not seem possible to separate the two species.

9. https://www.inaturalist.org/observations/315502957
Cleander group, alea subgroup.

Probably Arhopala phanda.
A. phanda have broad postdiscal spots on both wings.
UnH spot 6 & 7 are aligned & broadly columnar.
https://www.gbif.org/occurrence/2847201311
https://www.gbif.org/occurrence/2847201324



10.https://www.inaturalist.org/observations/315502977
11.https://www.inaturalist.org/observations/315502984

Arhopala horsfieldi.
The male upperside FW is only half green.
HW spot 6 & 7 less irregular.
Torna black spots in space 2, & 3 are more rounded.


The eumolphus group.
1. FW with spot 4 shifted out.
2. Hw spot 7 is directly on top of spot 6.
3. HW postdiscal band is only partially dislocated at vein 2.

A. eumolphus have HW spot 6 & 7 outer margins more strongly notched,& tornal black spots 2, & 3 more flattened.
Attachment 28937

https://www.gbif.org/occurrence/2847200713
https://www.gbif.org/occurrence/2847200675

https://www.gbif.org/occurrence/2847200434
https://www.gbif.org/occurrence/2847200446

https://www.gbif.org/occurrence/2847202661
https://www.gbif.org/occurrence/2847200049



12.https://www.inaturalist.org/observations/315503005
Zeuxidia amethystus.
The upperside shows the four blue patches.
https://www.butterflycircle.com/chec...1%20070908.jpg

Z. doubledayi can also be readily IDed by the HW eyespots being smaller and spot 2 is partially white.
https://yutaka.it-n.jp/npict5/50420001_n001.jpg



13. https://www.inaturalist.org/observations/315503016
The markings are that of the eumolphus group.
Probably A. eumolphus itself.
The HW spot 6 & 7 are more notched on the outer margins.
The tornal black spots are flattened so that the green metamark (diffuse0 is like a tapered pennant.


14. https://www.inaturalist.org/observations/315503049
The markings are that of the amphimuta group.
Too worn.

15. https://www.inaturalist.org/observations/315503059

16a. https://www.inaturalist.org/observations/315503050

16b. https://www.inaturalist.org/observations/315503058

All three are female variants of Allotinus horsfieldi.
Attachment 28938

Allotinus horsfieldi.
HW with postdiscal spot 6 under spot 7 or slightly inwards of it.
FW postdiscal band oblique and usually dislocated at veins 2 & 4.
Ground buff ,pale yellowish with the markings deeper brwn.
Female HW with the teeth broad-based.
Male.
https://www.gbif.org/occurrence/2847203237
Females. Note broad based teeth on HW margin.
https://www.gbif.org/occurrence/2847201683
https://www.gbif.org/occurrence/2847203239


Allotinus leogoron.
This is similarly marked but the ground is whiter and the markings darker.
The female have the HW teeth narrow-based.
https://www.gbif.org/occurrence/2847201619
Females. Note narrower-based HW teeth and whiter ground.
https://www.gbif.org/occurrence/2847203213
https://www.gbif.org/occurrence/2847203193


Two similar species may be mentioned.

A. corbet is a very small species with rounded FWs. The position of HW spot 6 is variable. sometimmes set deeper as in A. unicolor.
https://www.gbif.org/occurrence/2847201661
https://www.gbif.org/occurrence/2847201660

A. apries have the FW postdiscal band mostly parallel to the 5termen.
The HW postdiscal band is rather obscure and poorly defined.
Both sexes do not have teeth on the HW margin.
Male.
https://www.gbif.org/occurrence/3985726326
Female.
https://www.gbif.org/occurrence/2847203339

17.https://www.inaturalist.org/observations/315645554
Probable Potanthus mingo.

There is a strong black band at the abdominal end and the HW band's veins are not dark-dusted.
The species in which the abdominal end is strongly black banded are P. serina, lydia, trachala, mingo and flava.The first three can be eliminated by the FW markings.
P. flava is a rarity but is usually very heavily marked with dark spots beneath.
https://yutaka.it-n.jp/hes/92780010.html
https://www.gbif.org/occurrence/2456362435
This leaves P. mingo which very variable but the FW spots 4, & 5 are not distorted..
https://yutaka.it-n.jp/hes/92810010.html



18. https://www.inaturalist.org/observations/316288243
Appias paulina.
See male from Yala.
https://yutaka.it-n.jp/pie/20610020.html

A. albina have sharper FW.
https://yutaka.it-n.jp/pie/20590010.html




19. https://www.inaturalist.org/observations/316288244
Parnara bada.
Absence of cell spots and short antennae.

P. bada have FW spot 2, 3, & 4 well separated and equal distance apart.
https://yutaka.it-n.jp/hes/93050001.html
P. ganga have spot 3 closer to spot 2.
https://yutaka.it-n.jp/hes/93040001.html



20. https://www.inaturalist.org/observations/316288251
Most likely female Isma guttulifera.

The prominent spot in space 1b and twin large cellspot + white spot on antennal club indicate I. damcles or guttulifera.
The males of the two are rather similar.

In female I. guttulifera the inner margin of spot 2 lines up with the two cellspot.
Male.
https://www.gbif.org/occurrence/2456362305
Female.
https://www.gbif.org/occurrence/2456362254

In I damocles female the two cellspot do not line up so well with spot 2.
Male.
https://www.gbif.org/occurrence/2456362187
Female.
https://www.gbif.org/occurrence/2456362099

20. https://www.inaturalist.org/observations/316288262
Unknown.


21. https://www.inaturalist.org/observations/316530796
Probably Arhopala (or Flos) abseus.
https://blogger.googleusercontent.co...A_adult_4c.jpg
https://www.butterflycircle.com/chec...---Sum-Che.jpg



22. https://www.inaturalist.org/observations/316530801
Unknown.



23.https://www.inaturalist.org/observations/316713712
Parnara bada.



TL Seow: Cheers.

Thanks again Dr. Seow for your id feedback and excellent ilustrations - apreciate them.

Cheers, SL Liew