Tanaecia in Singapore.

Five species of Tanaecia were recorded in Singapore but sadly two seem to be extinct.
The five were .

1. Tanaecia iapis puseda.
2. Tanaecia pelea pelea.

3. Tanaecia godartii puloa.
This species was discovered in Sentosa (Prev. as Pulau Belakang Mati.)
The female of ssp puloa was unusual in having the HW marked in blue.
The male have a narrow blue band which lines up neatly at rest.
http://yutaka.it-n.jp/lim2/721050010.html


4. Tanaecia clathrata violaria.
Only the female was known in Singapore. The blue is variable.
http://yutaka.it-n.jp/lim2/720920010.html
The female type specimen from Singapore.
https://www.wikidata.org/wiki/Q13578...aClathrata.png

Recent observations suggest one or more species are present & undetected.

1. https://www.inaturalist.org/observations/125720855
https://inaturalist-open-data.s3.ama...062/large.jpeg

At first glance this might suggest the female Euthalia monina.
In E. monina the FW sub-basal spot in space 1b is much smaller, & the HW arrowheads form a continuous zigzag.
E. monina female.
https://static.inaturalist.org/photo.../original.jpeg
The HW pattern suggest that the male may have a broad blue band but this also does not match another possibility.
Tanaecia heringi (= T. coelebs.)
https://i.ebayimg.com/images/g/l~8AA...IQ2/s-l400.jpg
https://i.ebayimg.com/images/g/PlQAA...LiL/s-l500.jpg
Probably an unusual form of T. pelea female.


Two further observations are of one species likely to be a rediscovery to Singapore.
https://www.inaturalist.org/observations/145186207
https://www.inaturalist.org/observations/124688776
Note the HW arroheads are set closer to the margin than the inner border, & the built is stout.


Tanaecia pelea.
HW arrowheads set midway or closer to the inner border of the pale marginal zone.
Male with a slender built & a rounded HW.
http://yutaka.it-n.jp/lim2/720960001.html
Males.
https://inaturalist-open-data.s3.ama...9360/large.jpg
https://inaturalist-open-data.s3.ama...4535/large.jpg
Female.
https://inaturalist-open-data.s3.ama...575/large.jpeg

The other two species have the HW arrowheads set nearer the outer margin.

Tanaecia palguna.
Male with stouter built & tapered HW.
FW arrowheads with short points, so the white helmetshaped spots appear wide.
http://yutaka.it-n.jp/lim2/720950010.html
Male.
https://thaibutterflies.com/wp-conte...ia-palguna.jpg

Tanaecia munda.
Male with a stouter built.
FW arrowheads more pointed & intrude deeper into the helmet spots.
http://yutaka.it-n.jp/lim2/720940020.html
https://singapore.biodiversity.onlin...doptera-000485
Female.
https://a4.pbase.com/o6/25/686825/1/...aia_female.jpg
Both observations seem closer to Tanaecia munda & better pix should confirm this.



TL Seow: Cheers.

Thanks Dr Seow for highlighting the different Tanaecia species
Now I am not very sure what this is - shot in the western part of SG
https://live.staticflickr.com/65535/...83252aee_c.jpg

Post 2.

Female Euthalia monina.
In FW space 1b, near the base are two small spots, one flat.

Tanaecia only have a single large spot in the same place.


TL Seow: Cheers.

Hi Dr Seow,

I went to look through my Tanaecia photos and maybe you could double check them, see if anything is different.

1. This one should be a typical example of T. pelea
https://www.inaturalist.org/observations/141865471

2. This one the HW arrows seem different from the typical T. pelea, shot last year April at Rifle Range Link. The photo size is too large to upload here so here's the iNaturalist link
https://www.inaturalist.org/observations/149131919

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.

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

Attachment 28186

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.

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.

Quote:

---

Originally Posted by 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.

---

Many thanks, Dr Seow for the explanation.
:)

REViSION.

Quote:

---

Originally Posted by horace2264

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

Attachment 28186

---

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.

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. :grin2:

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.

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.

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

Post 14.

All three are Tanaecia pelea.
To reiterate.

Tanaecia pelea.
HW arroheads midway or nearer the inner border.
Male with HW margin rounded as in the female.
Male HW arrowheads abbreviated, smaller.
Male & female.
https://wingscales.com/Nymphalidae/Tanaecia-pelea-pelea

Tanaecia palguna.
HW arrowheads nearer the margin.
Male with the HW arrowheads abbreviated & those on the FW relatively short.
Male HW tapers to the tornus.
Male.
https://inaturalist-open-data.s3.ama...8396/large.jpg
Probable female.
https://a4.pbase.com/g9/25/686825/2/...5.MwQKhqWz.jpg

Tanaecia munda
HW arrowheads nearer the margin
Male with the HW tapers to the tornus.
Male HW arrowheads long & well-defined as in the female.
Male.
https://singapore.biodiversity.onlin...7abbc0666c.jpg
Possible female.
https://a4.pbase.com/g6/25/686825/3/...3.q4HTrHyT.jpg


Taenecia aruna.
Arrowheads well-defined in white especially on the FW.
FW with two separated spots in space 2 & 3 ,
https://inaturalist-open-data.s3.ama...1792/large.jpg


TL Seow: Cheers.