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Thread: Tanaecia in Singapore.

  1. #1
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    Default 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.
    Last edited by Psyche; 24-Jul-2023 at 11:24 AM.

  2. #2
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    Default

    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

  3. #3
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    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.

  4. #4

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    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
    Jian Kai

  5. #5
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    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.
    Last edited by Psyche; 24-Jul-2023 at 01:41 AM.

  6. #6
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    Hi Dr Seow,
    What about this shot taken in Ubin in 2018?

    MalayViscount_Ubin.jpg
    Horace

  7. #7
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    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.

  8. #8
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    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.

  9. #9
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    Quote Originally Posted by Psyche View Post
    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.
    Horace

  10. #10
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    REViSION.


    Quote Originally Posted by horace2264 View Post
    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.
    Last edited by Psyche; 24-Jul-2023 at 11:27 AM.

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