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itsmemei
20-Feb-2021, 02:57 PM
Dear Dr Seow, could you help to distinguish the gender of these 2 Common Rose? Butt A has rounder forewings and abdomen.

https://live.staticflickr.com/65535/50961758821_6310f7c59d_b_d.jpg

A
https://live.staticflickr.com/65535/50961554587_baaf7afd56_b_d.jpg

B
https://live.staticflickr.com/65535/50961554552_7a5a4764a9_b_d.jpg

Psyche
20-Feb-2021, 04:56 PM
Both are males.

The two genders can sometimes be confusingly similar.

Male Pachliopta.
FW narrower with the termen (outer margin) straight.
Abdominal end, last segment is triangular .This is the clasper.
https://d2gg9evh47fn9z.cloudfront.net/800px_COLOURBOX27028535.jpg
http://thaibutterflies.com/wp-content/uploads/2016/06/The-Common-rose-1080x675.jpg
http://www.butterflycircle.com/checklist/mugshots/Pachliopta%20aristolochiae%20asteris/Black-Rose%20-%20khew.jpg
http://antropocene.it/wp-content/uploads/2019/02/Pachliopta-aristolochiae-800x445.jpg


Female Pachliopta
FW broader with the termen( outer margin) rounded ( convex ).
Abdominal end last segment is nearly rectangular, not triangular.
https://ms.wikipedia.org/wiki/Atrophaneura_aristolochiae#/media/Fail:Common_Rose_(Pachliopta_aristolochiae)_in_Hyd erabad_W_IMG_8713.jpg
http://www.butterflycircle.com/checklist/mugshots/Pachliopta%20aristolochiae%20asteris/common%20rose%20-%20sunny%20chir.jpg
https://en.wikipedia.org/wiki/Pachliopta_aristolochiae#/media/File:Pachliopta_aristolochiae_interposita.jpg
https://commons.wikimedia.org/wiki/File:Pachliopta_aristolochiae-Common_rose_butterfly.jpg


There is some variation in the wingshape & some males have broader FWs, but the termen is always straight in the middle part.
https://species.wikimedia.org/wiki/Pachliopta_aristolochiae#/media/File:AristolochiaeMFUpUnAC1.jpg


The male is much commoner.



TL Seow: Cheers.

Psyche
20-Feb-2021, 05:04 PM
Both are males.

The two genders can sometimes be confusingly similar.

Male Pachliopta.
FW narrower with the termen (outer margin) straight.
Abdominal end, last segment is triangular .This is the clasper.
https://d2gg9evh47fn9z.cloudfront.net/800px_COLOURBOX27028535.jpg
http://thaibutterflies.com/wp-content/uploads/2016/06/The-Common-rose-1080x675.jpg
http://www.butterflycircle.com/checklist/mugshots/Pachliopta%20aristolochiae%20asteris/Black-Rose%20-%20khew.jpg
http://antropocene.it/wp-content/uploads/2019/02/Pachliopta-aristolochiae-800x445.jpg


Female Pachliopta
FW broader with the termen( outer margin) rounded ( convex ).
Abdominal end last segment is nearly rectangular, not triangular.
https://ms.wikipedia.org/wiki/Atrophaneura_aristolochiae#/media/Fail:Common_Rose_(Pachliopta_aristolochiae)_in_Hyd erabad_W_IMG_8713.jpg
http://www.butterflycircle.com/checklist/mugshots/Pachliopta%20aristolochiae%20asteris/common%20rose%20-%20sunny%20chir.jpg
https://en.wikipedia.org/wiki/Pachliopta_aristolochiae#/media/File:Pachliopta_aristolochiae_interposita.jpg
https://commons.wikimedia.org/wiki/File:Pachliopta_aristolochiae-Common_rose_butterfly.jpg


There is some variation in the wingshape & some males have broader FWs, but the termen is always straight in the middle part.
https://species.wikimedia.org/wiki/Pachliopta_aristolochiae#/media/File:AristolochiaeMFUpUnAC1.jpg


The male is much commoner.



TL Seow: Cheers.

itsmemei
20-Feb-2021, 05:34 PM
Thanks, Dr Seow!