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Thread: ID help for swift species

  1. #1
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    Default ID help for swift species

    Hello!

    I took a photo of this butterfly near NTU, and am having some trouble IDing it. I think it looks like a Malayan Swift, but that's just a guess. Is anyone able to help?

    swift.JPG

    Thanks!

  2. #2
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    I am afraid this shot present great difficulties.
    The shot is rather low-res & blurry.
    The antennae which are improtant in ID are hidden.

    The main features are.
    1 female from the abdominal end & long profile.
    2. There appear to be two subapical spots ie spot 6 & 7.
    3. There is a gap which is space 5 & below a large pale area suggesting spots in space 4 & 3.
    4. There appear to be a couple of spots on the HW.

    Pemara pugnans have large FW spots 3 & 4 & would match the FW.
    But the spots in Pemara are yellow & the HW have no spot.
    The face is also brown.
    http://yutaka.it-n.jp/hes/92180001.html
    http://www.butterflycircle.com/check...20-%20Khew.jpg
    http://i13.photobucket.com/albums/a2...psb95eab08.png


    Probably Isma bononia. Correction Unlikely.
    FW spots 3 & 4 are variable in size & in a blurred shot would appear joined together.
    The underside HW have spots.
    The face is whitish.
    The antennae have white patches.
    http://yutaka.it-n.jp/hes/91990001.html

    You may try to access this site Biodiversity of Singapore.
    My Chrome keep blocking it as unsafe.
    https://www.google.com/search?q=isma...VczSbtJyEw5H3M


    The type location (ie. first collected) is Singapore.
    If correct, you may have rediscover this species.


    TL Seow: Cheers.
    PS. Female Baoris farri for comparison.
    https://4.bp.blogspot.com/-RWFIxTGN_...ederick_01.jpg
    PS 2 Female Caltoris malaya.
    https://4.bp.blogspot.com/-j1Pq5mDim...M_adult_06.jpg
    Last edited by Psyche; 05-Oct-2021 at 09:09 PM.

  3. #3
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    There are too many uncertainties here.

    If the HW white marks are spots they are in space 4 & 5.
    In Isma bononia the two spots are in space 2 & 3.


    Only two species sometimes have HW spots in space 4 & 5 (reduced from the usual number).
    Their appearance are quite different.

    Polytremis lubricans.
    http://www.butterflycircle.com/check...20-%20Khew.jpg

    Pelopidas assamensis.
    https://www.ifoundbutterflies.org/me...9a053587-2.jpg



    Even if assuming all the pale marks are due to injury (except the two subapical spots) confirmation of Caltoris malaya will require here the absence of any FW cellspot.

    Caltoris malaya. Note FW cell without spot.
    https://inaturalist-open-data.s3.ama...peg?1631441516


    TL Seow: Cheers.

  4. #4
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    Correction.

    Polytremis lubricans.



    In Polytremis lubricans the number of spots on the HW varies greatly .
    The spots are normally yellow but in worn individuals may appear whitish.

    Typically the spot in space 4 is large & oblong & the spot in space 5 small & rounded.
    The other is the blackish shading around the spot on the FW.

    The appearance is very similar to this ,minus the extra HW spots.
    https://ftp.funet.fi/index/Tree_of_l...ricans-1av.jpg

    Another example with the HW spots much reduced.
    https://www.ifoundbutterflies.org/me...8b43d9a3-2.jpg


    TL Seow: Cheers.

  5. #5
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    Thanks very much TL Seow! Sorry I couldnt take a better photo.

    I also saw this butterfly in the same vicinity. Can I confirm that it's a Pelopidas mathias mathias?

    swift2.jpg
    swift2a.jpg

    Thank you!

  6. #6
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    Also, this looks like Baoris sp based on the shape of the antaennae, if I'm not wrong. However, I understand there's no way to tell from the two species based on photos?

    Swift 3.jpg

    Thanks!

  7. #7
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    Post 5.

    Borbo cinnara.
    In the 1st pic, 3 HW spots are visible in apace 2, 3, & 6, & no cellspot.


    Borbo cinnara usually have none or one FW cellspot.
    However, there are examples with two cellspot.

    B. cinnara with two cellspots.
    Same individual showing both sides.

    https://www.ifoundbutterflies.org/me...dbf6102c-2.jpg
    https://www.ifoundbutterflies.org/me...dbf6102c-3.jpg

    https://www.ifoundbutterflies.org/me...f36d26f6-1.jpg
    https://www.ifoundbutterflies.org/me...f36d26f6-2.jpg


    TL Seow:Cheers.

  8. #8
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    Post 6.

    Probably Baoris oceia.

    The antenna shape in Baoris & Caltoris are nearly similar except the angle of shot make them look different.

    Caltoris spp with the antennal shaft mostly paler & usually prominent are C. cormasa. cahira & bromus.
    C. bromus.
    http://i13.photobucket.com/albums/a2...psd5aebfd1.png
    C. cahira.
    https://4.bp.blogspot.com/-7l1dr3n_g...ris+bromus.jpg
    C. cormasa.
    http://2.bp.blogspot.com/-OOfX5p3pNC...0/DSC_0106.JPG


    Species in which the antennal shaft is mostly black.C. malaya, philippina, & Baoris.
    C. malaya.
    https://1.bp.blogspot.com/-sEtiy2_aX...M_adult_02.jpg
    https://1.bp.blogspot.com/-DQv0mY2dh...male_upper.jpg


    C. malaya is mostly brown whereas his strongly grey.


    The reference text does not separate the two species based on colour although stating the underside of B. farri is pale silky brown.


    The male of B. farri often fully spotted, ie with 3 subapical spots & 2 cellspot.

    Male B. oceia is stated to have spot 8 (topmost subapical) absent & often the upper cellspot as well.

    Females of both species may be/usually fully spotted.

    Since all known males in Singapore have spot 8 absent although upper cellspot is present, suggest most are B. oceia.


    https://i1.wp.com/www.singaporegeogr...00%2C600&ssl=1
    https://4.bp.blogspot.com/-zofygsdg7...oris+oceia.jpg


    https://3.bp.blogspot.com/-W2EAN-yRd...i_adult_02.jpg
    https://4.bp.blogspot.com/-RWFIxTGN_...ederick_01.jpg


    TL Seow: Cheers.

  9. #9
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    Thank you!

    Quote Originally Posted by Psyche View Post
    Post 5.

    Borbo cinnara.
    In the 1st pic, 3 HW spots are visible in apace 2, 3, & 6, & no cellspot.


    Borbo cinnara usually have none or one FW cellspot.
    However, there are examples with two cellspot.

    B. cinnara with two cellspots.
    Same individual showing both sides.

    https://www.ifoundbutterflies.org/me...dbf6102c-2.jpg
    https://www.ifoundbutterflies.org/me...dbf6102c-3.jpg

    https://www.ifoundbutterflies.org/me...f36d26f6-1.jpg
    https://www.ifoundbutterflies.org/me...f36d26f6-2.jpg


    TL Seow:Cheers.

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