Tanaecia in Singapore.

[Psyche]

Post 4.

Both are typical Tanaecia pelea.

Of the similar species only Tanaecia munda is recorded in the past.

The arrowheads in T palguna & munda are set nearer the outer margin than the inner border.
The males of T. palguna & munda have a more tapered HW & stouter built, ie like a male Euthalia.
http://yutaka.it-n.jp/lim2/720960001.html
http://yutaka.it-n.jp/lim2/720950010.html
http://yutaka.it-n.jp/lim2/720940020.html

Since only T. munda is recorded from Singapore, it is best to concentrate on this species.
The HW have more white & the arrowheads are sharper.
https://singapore.biodiversity.onlin...doptera-000485

Male female T. pelea.
https://www.inaturalist.org/observations/119214231
https://www.inaturalist.org/observations/129776840

Male & female T. palguna.
https://www.inaturalist.org/observations/140354343
https://www.inaturalist.org/observations/137945298

?MaleT. munda.
https://www.inaturalist.org/observations/122783738



TL Seow: Cheers.

[horace2264]

Hi Dr Seow,
What about this shot taken in Ubin in 2018?

MalayViscount_Ubin.jpg

[Psyche]

Post 6.
This is still a female T. pelea.
Note in particular each of the white spots have the inner borders narrowly tapered.

These females T. palguna & T. munda have been DNA barcoded.
The inner borders of the FW white spots are broadly rounded.
https://www.researchgate.net/profile...unda-right.jpg
https://www.researchgate.net/figure/...fig2_351466256


TL Seow: Cheers.

[Psyche]

Correction

These females T. palguna & T. munda have been DNA barcoded.
The inner borders of the FW white spots are broadly rounded.
https://www.researchgate.net/profile...unda-right.jpg
https://www.researchgate.net/figure/...fig2_351466256

It is regrettable that the specimen of the female T. palguna shown in the research article is actually a female Euthalia monina.
Note the double small spots in FW space 1b sub-basally.




TL Seow; Cheers.

[horace2264]

Post 6.
This is still a female T. pelea.
Note in particular each of the white spots have the inner borders narrowly tapered.

These females T. palguna & T. munda have been DNA barcoded.
The inner borders of the FW white spots are broadly rounded.
https://www.researchgate.net/profile...unda-right.jpg
https://www.researchgate.net/figure/...fig2_351466256


TL Seow: Cheers.

Many thanks, Dr Seow for the explanation.

[Psyche]

REViSION.

Hi Dr Seow,
What about this shot taken in Ubin in 2018?

MalayViscount_Ubin.jpg

Having look & compare with the female T. munda in the corrigenda of C&P5, this could possibly be a female T. munda.
https://www.mothsofborneo.com/Corrig...Nov12_2021.pdf
This female is identical to the female T. munda in the Corrigenda of C&P5.
https://a4.pbase.com/o6/25/686825/1/...aia_female.jpg


Typical male & female T. pelea. HW arrowheads tend to be midway or nearer the inner border of the marginal zone.
https://2.bp.blogspot.com/-nRUv8knvc...count-BenY.jpg
Males.
https://3.bp.blogspot.com/-HPyCZXC32...unt-LokePF.jpg
https://2.bp.blogspot.com/-ThTh5VhSK...ederick_03.jpg
Females.
https://3.bp.blogspot.com/-bTGnw3X0J...ichaelKhor.jpg
https://4.bp.blogspot.com/-jDws3eQQ3...count-AntW.jpg
http://yutaka.it-n.jp/lim2/720960001.html

T. munda HW arrowheads always nearer outer margin in the male, midway in the female; HW more white.
Singapore male. HW tapers to the tornus.
https://singapore.biodiversity.onlin...0485?imageId=1
http://yutaka.it-n.jp/lim2/720940020.html


Note; Needs a male to confirm the presence of this species.


TL Seow: Cheers.

[horace2264]

Many thanks, Dr Seow for the added insights to the distinguishing features of both sexes of T. munda.
We need to work harder and probably spend more time in Ubin in our search for T. munda.

[Psyche]

This observation is interesting in that the FW arrowheads ,rendered in white are separated from the series of postdiscal spots to the inside.
https://www.inaturalist.org/observations/137292791
https://inaturalist-open-data.s3.ama...783/large.jpeg

In all the three other similar species in P. Malaysia the white area to the inside of the arrowheads are not separated as distinct spots.
T. pelea male.
https://inaturalist-open-data.s3.ama...253/large.jpeg
T. palguna male.
https://thaibutterflies.com/wp-conte...ia-palguna.jpg
T. munda male.
https://singapore.biodiversity.onlin...0485?imageId=1
T. aruna male.
https://thaibutterflies.com/wp-conte...ia-aruna-1.jpg
http://yutaka.it-n.jp/lim2/720930001.html

Tanaecia is very variable & the subspecies from nearby islands eg Sumatra ,Borneo are very confusingly different.

This looks almost certain to be T. aruna but one can not rule out a form of T. pelea say from Borneo, an escapee from a butterfly farm.
Better pix will help to confirm the ID.

TL Seow: CHeers.

[Psyche]

Revision.

This pic which strongly suggest T. arunaappear to be a T. pelea pic. which have been overcontrasted.
https://www.inaturalist.org/observations/137292791

It is rather similar to this example.
https://www.inaturalist.org/observations/55162408


TL Seow: Cheers.

[Zicky]

Dear Doctor Seow,

I am confident these are Tanaecia genus, but i would like to hear your opinion given that you have some thoughts on other tanaecia in Singapore

1 - inat link - https://www.inaturalist.org/observations/152608903
2 - inat link - https://www.inaturalist.org/observations/152608885
3 - inat link - https://www.inaturalist.org/observations/152608883

Skipping rehards
Zicky