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Thread: Tanaecia in Singapore.

  1. #11
    Join Date
    Jun 2006
    Location
    Western Singapore
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    Default

    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.
    Horace

  2. #12
    Join Date
    Nov 2010
    Location
    Malaysia
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    6,846

    Default Tanaecia aruna aruna in Singapore ?

    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.
    Last edited by Psyche; 15-Mar-2023 at 06:45 PM.

  3. #13
    Join Date
    Nov 2010
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    Malaysia
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    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.

  4. #14
    Join Date
    May 2022
    Location
    Singapore
    Posts
    139

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    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
    Zick Soh

  5. #15
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    6,846

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    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.

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