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Thread: Nacaduba kurava or calauria

  1. #1
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    477

    Default Nacaduba kurava or calauria

    I've been looking at this image in my collection a great many times and am still not convinced I can say with any confidence if this is Nacaduba kurava or calauria (the latter I am not familiar with)

    From previous postings on ButterflyCircle calauria should have well developed dark stria and a straight forewing outer-discal band. However images on BC checklist show the band being either straight or curved/broken.

    This image was photographed in southern Thailand on Malaysia border. Low elevation primary forest.

    I note the very dark colouration (much darker than all my kurava images).
    The seemingly crowded and chaotic layout of the stria on both wings looks very odd against all my other Nacaduba images.
    I also note the pointed nature of the sub-marginal forewing spots 4 and 5.

    Any comments on the ID of this one would be very helpful please.
    Many thanks.

    b4775 Transparent Sixline Blue (Nacaduba kurava nemana) 115 m - Bang Lang 02.JPG
    Last edited by DaveChiangMai; 12-May-2020 at 01:20 PM.

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,462

    Default

    This is a typical female N. kurava .
    It has large submarginal spots with rounded inner margins.

    N. kurava dark striae in postdiscal band weak in the male, less so in the female.
    Submarginal spots with rounded margins; HW spot 6 often very large.
    Males.
    https://www.butterflycircle.com/chec...ue-SunnyC2.JPG
    https://www.butterflycircle.com/chec...neBlue-KSK.JPG
    Females.
    https://www.ifoundbutterflies.org/me...Saji_ae302.jpg
    https://www.flickr.com/photos/115784433@N04/38693424025
    https://singapore.biodiversity.onlin...doptera-000142

    N. calauria ;Dark striae prominent in both sexes.
    FW submarginal spots relatively small with spots 4 & 5 sharp-pointed.
    FW postdiscal band almost always straight& unbroken.
    Male.
    https://wanderingbutterflyeffect.fil...b3ad98860e.jpg
    Male left; female right.
    https://www.butterflycircle.com/chec...llen%20Tan.JPG
    Female with larger submarginal spots.
    https://www.butterflycircle.com/chec...yica---2--.jpg

    There were lots of errors in the past.

    TL Seow: Cheers.
    Last edited by Psyche; 12-May-2020 at 11:08 PM.

  3. #3
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    477

    Default

    Many thanks for the details.

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