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View Full Version : ID confirmation - Pygmy posy or dwarf common posy



Siaoon
28-Jul-2026, 11:52 PM
Hi Dr Seow,


Need your advice to confirm the ID of this female posy.
https://www.inaturalist.org/observations/385966125

Help very much appreciated.

Cheers
Siaoon

Psyche
30-Jul-2026, 04:52 PM
https://www.inaturalist.org/observations/385966125
Dwarf Common Posy ,Drupadia ravindra.

Small size individuals can be very confusing.
It is also highly possible the two species may interbreed and produce viable offsprings.

In small examples the best clues are 1)the marginal white band on the HW, 2) HW marginal spot 6.


Pygmy Posy ,Drupadia rufotaenia.
1. HW white marginal band uniformly narrow and well-defined through, including in space 1b, ie between the two black marginal spot.
2. HW marginal spot 6 latge and black.
https://www.butterflycircle.com/checklist/mugshots/Drupadia%20rufotaenia%20rufotaenia/Drupadia-rufotaenia-rufotaenia-(Pygmy-Posy)1.jpg
https://www.butterflycircle.com/checklist/mugshots/Drupadia%20rufotaenia%20rufotaenia/202%20Drupadia%20rufotaenia%20rufotaenia%20(Pygmy% 20Posy)%20..%20Sunny%20Chir.jpg


Common Posy, Drupadia ravindra.
HW white marginal band in space 1b ,between the two black marginal spots much widened,
Its inner border is diffuse and vague.
2. HW marginal spot 6 largely absent and obscure, overwhelmed by the orange ground.
https://www.butterflycircle.com/checklist/mugshots/Drupadia%20ravindra%20moorei/Common%20Posy%20-%202%20-%20Khew.jpg
https://www.butterflycircle.com/checklist/mugshots/Drupadia%20ravindra%20moorei/Common%20Posy%2001%20090808.jpg

TL Seow: Cheers.

Siaoon
01-Aug-2026, 12:44 AM
Thank you for your detailed reply. It was ovipositing on an uvaria sp host plant.
So I was hoping for a D.rufotarnia, as uvaria sp wasn't recorded as a host for D.ravindra.

Once again thank you for sharing your knowledge...

Cheers
Hp Lim