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Thread: ID Request: Location - Sungai Sedim, Kedah observed on August 24, 2023

  1. #1
    Join Date
    Dec 2022
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    Penang Island, Malaysia
    Posts
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    Default ID Request: Location - Sungai Sedim, Kedah observed on August 24, 2023

    Hi Dr Seow,
    I revisited Sungai Sedim, Kedah yesterday. Need your help to confirm id of these following butterfly encounters. Thanks.

    #1 Amathusia ochraceofusca or schoenbergi?
    https://www.inaturalist.org/observations/179914311

    #2 Skipper?
    https://www.inaturalist.org/observations/179975823

    #3 Arhopala?
    https://www.inaturalist.org/observations/179975809

    #4 Hasora?
    https://www.inaturalist.org/observations/179920263

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
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    1. Amathusia ochraceofusca.

    The two species can be very similar on the underside.
    The Thai images show A. ochraceofusca as having very shallow notches on the FW band, but this is variable.
    http://yutaka.it-n.jp/ama/50350001.html
    https://thaibutterflies.com/Butterfl...ochraceofusca/

    http://yutaka.it-n.jp/ama/50340001.html
    https://thaibutterflies.com/wp-conte...oenbergi-2.jpg

    This example of A. ochraceofusca was taken in P. Malaysia by a Japanese collector.
    https://stat.ameba.jp/user_images/20...3353807423.jpg
    The deep notches on the outer margin of the FW band are at vein 3, 4, 5, 6, & at the costal margin 7.
    Notches 3 & 4 are of equal depth.

    In A. schoenbergi the notch at vein 4 is deeper than that at vein 3.



    2.Koruthaialos rubecula

    K. rubecula UpF red band not reaching costa (but variable)
    Also. Outer margin of band not indented in the middle & palpi long.
    http://yutaka.it-n.jp/hes/91510001.html
    https://thaibutterflies.com/wp-conte...s-rubecula.jpg

    K. sindu.
    Red band often reaches costa UpF ;Red band with a notch on outer margin ;palpi 3rd segment very short.
    http://yutaka.it-n.jp/hes/91530001.html
    https://thaibutterflies.com/wp-conte...os-sindu-1.jpg

    Other similar species.
    http://yutaka.it-n.jp/hes/91570001.html
    http://yutaka.it-n.jp/hes/91580001.html
    http://yutaka.it-n.jp/hes/92190001.html


    3. Arhopala amphimuta male.

    4 similar species.
    HW with a small white spot on the cilia at the tornus.
    A. moolaiana
    https://thaibutterflies.com/Butterfl...ala-moolaiana/
    A. norda.
    https://thaibutterflies.com/wp-conte...pala-norda.jpg

    HW without a tornal white spot.
    A. amphimuta ;
    Upperside blue to the margin; UnH 'V' spot wellshaped.
    https://4.bp.blogspot.com/-J9Xmngyim...+amphimuta.jpg
    https://3.bp.blogspot.com/_yzw2AzY2d...la+-+TanCP.jpg

    A. major.
    Upperside with broad brown borders ;UnH 'V' spot distorted.
    https://www.butterflycircle.com/chec...20Tan%20CP.jpg
    https://www.butterflycircle.com/chec...-2---Tan-C.jpg



    4. Hasora chromus.
    Underside dull brown & purplish, white band narrow .FW typically without a subapical spot 6.
    https://en.wikipedia.org/wiki/Hasora...nBandedAwl.jpg



    TL Seow: Cheers.
    Last edited by Psyche; 26-Aug-2023 at 05:19 AM.

  3. #3
    Join Date
    Dec 2022
    Location
    Penang Island, Malaysia
    Posts
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    Thanks so much Dr. Seow. Appreciate your detailed sharing, learning examples and identification.

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