ID request - Butterflies of Bukit Tinggi, Pahang - April 17-18, 2025

Hi Dr. Seow,
Request your help again for id for my observations from my recent Bukit Tinggi, Pahang trip on April 17-18, 2025.

BTW, during this trip, I was able to see these lifers:
Enispe duranius, Laringa castelnaui, Surendra vivarna, Flos morphina, Neptis anjana, Lexias canescens,, Pseudozizeria maha.

#1 Grass skipper?
https://www.inaturalist.org/observations/271067068

#2 Grass skipper?
https://www.inaturalist.org/observations/271067070

#3 Grass skipper?
https://www.inaturalist.org/observations/271067088

#4 Grass skipper?
https://www.inaturalist.org/observations/271067110

#5 Lycaenidae?
https://www.inaturalist.org/observations/271380538

#6 Lycaenidae?
https://www.inaturalist.org/observations/271380539

#7 Lycaenidae?
https://www.inaturalist.org/observations/271380543

#8 Lycaenidae?
https://www.inaturalist.org/observations/271380550

#9 Grass skipper?
https://www.inaturalist.org/observations/271423791

#10 Grass skipper?
https://www.inaturalist.org/observations/271423792

#11 Grass skipper?
https://www.inaturalist.org/observations/271423794

#12 Grass skipper? Koruthaialos rubecula?
https://www.inaturalist.org/observations/271423795

#13 Grass skipper?
https://www.inaturalist.org/observations/271635729

#14 Grass skipper? Borbo cinnara?
https://www.inaturalist.org/observations/271635731

Cheers, SL Liew

1.https://www.inaturalist.org/observations/271067068
Probably Hyarotis iadera.

Antenna with a white dot seen in Hyarotis or Isma.
Wings uniformly brown.
https://yutaka.it-n.jp/hes/91850001.html



2. https://www.inaturalist.org/observations/271067110
4. https://www.inaturalist.org/observations/271067070

Potanthus lydia.
Large FW 15mm.
Darkish.
Abdomen heavily black-banded and its end heavily black.
Underside dark-shaded without defined spots
UpH band veins not dark-dusted.
https://www.gbif.org/occurrence/2456362409
https://www.gbif.org/occurrence/2847176165
https://thaibutterflies.com/wp-conte...thus-lydia.jpg


3. https://www.inaturalist.org/observations/271067088
The spot arrangement ,with an uper cellspot are as for Halpe.
eg.
https://yutaka.it-n.jp/hes/91410001.html
https://yutaka.it-n.jp/hes/91400010.html

5.https://www.inaturalist.org/observations/271380538
7.https://www.inaturalist.org/observations/271380543
8.https://www.inaturalist.org/observations/271380550

Udara placidula.

Markings relatively small and light.
HW postdiscal spot 7 much darker.
HW marginal spots less heavy and submarginal lunules more rounded.
Male UpF with very narrow border.
https://yutaka.it-n.jp/lyc4/80770010.html
https://www.gbif.org/occurrence/2847201800
https://www.gbif.org/occurrence/2847201794
https://www.inaturalist.org/observations/214331294

Can be very similar.
Celastrina lavendularis.
Spots with prominent white rings and typically heavy.
HW marginal spots often heavy and black, and submarginal lunule3s more serrated.
Male upperside with wider diffuse borders on both wings.
https://yutaka.it-n.jp/lyc4/80870020.html
https://wingscales.com/Lycaenidae/Ce...laris-isabella
https://www.gbif.org/occurrence/2847199548
https://www.gbif.org/occurrence/2847199548



6. https://www.inaturalist.org/observations/271380539

Udara rona.
Similar to U. dilecta with small spots.
HW spot 7 not much darker.
All spots light, more yellowish & may be fading.
Upperside both sexes deeper blue than in U. dilecta.
https://www.gbif.org/occurrence/2847201850
https://www.gbif.org/occurrence/2847201828
https://nlliew66butterflies.blogspot...uhstorfer.html

9.https://www.inaturalist.org/observations/271423791
Uncertain.
The dark yellow FW spots suggest two species.

a. Polytremis lubricans.
The HW spots may be absent on the underside. See Ranong female below.
https://yutaka.it-n.jp/hes/93150001.html
b. Pemara pugnans.
https://yutaka.it-n.jp/hes/92180001.html



10.https://www.inaturalist.org/observations/271423792
Uncertain.
The cellspot ,one large and one small is seen in many skippers.

Closest.https://yutaka.it-n.jp/hes/91950001.html


11. https://www.inaturalist.org/observations/271423794
13. https://www.inaturalist.org/observations/271635729

These two are typical Borbo cinnara.
The have the typical HW spots 2, 3, & 5,no cellspot and thick clubs.
https://blogger.googleusercontent.co...lt_Khew_01.jpg


12.https://www.inaturalist.org/observations/271423795
This matches the female Pseudokerana fuigur well.

K. rubecula orange band inner margin regular.
https://yutaka.it-n.jp/hes/91510001.html

K. sindu.
Orange band with a outer mid-margin notch.
https://yutaka.it-n.jp/hes/91530001.html

K. armatus; Orange band with an outer notch at upper third.
https://yutaka.it-n.jp/hes/91570001.html

K. gemmifer. Orange band with an outer upper concavity.
https://yutaka.it-n.jp/hes/91580001.html

P. fulgur. Orange band with a inner mid margin shallow concavity.
https://yutaka.it-n.jp/hes/92190001.html



14.https://www.inaturalist.org/observations/271635731
Probably correct as Borbo cinnara.
Left FW shows a spot in space 1b (not present in Parnara(.
Antennae with thick clubs.
No cellspot.

B. cinnara can have 0, 1, or 2 cellspots.

TL Seow; Cheers.

Thanks so much Dr. Seow. Always appreciate your help.

Cheers from Penang,
SL LIew