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Thread: Help with ID of Nacaduba sp

  1. #1
    Join Date
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    Default Help with ID of Nacaduba sp

    Two different butterflies, which I assume are Nacaduba species. Both photographed in mid elevation forest (500 metres) in Nan province, northern Thailand. Very grateful for pointers to identify them.

    Image 1.
    IMG_0695.JPG

    Image 2.
    IMG_0015.JPG

  2. #2
    Join Date
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    Default

    1. Male Nacaduba hermus .

    2. Male Nacaduba hermus.


    Both have only two FW bands (excluding the submarginals) & thus 4-lines blue.

    The 4-lines blues may be ID'ed thus.


    1 N. pavana: Bands with strong inner dark striae ;HW black spot strongly dusted with metallic blue scales.
    https://wingscales.com/content/record/408-1-eb597.jpg

    2. N. sanaya : Without inner dark striae or barely ;HW postdiscal band & submarginals in space 4 & 5 well separated (not always) .FW band dislocated at vein 6 ;HW black spot barely with blue scales.
    http://1.bp.blogspot.com/-XEY63bA0JP...aya+elioti.jpg
    https://wingscales.com/content/record/410-1-e0bfc.jpg

    3. N. hermus; Inner dark striae weak; HW postdiscal spots & submarginals usually close in space 4 & 5 (not always) ; FW band barely dislocated; HW black spot with blue scales.
    http://www.ifoundbutterflies.org/med...d9595f3a-1.jpg (wrong image corrected.)
    http://www.ifoundbutterflies.org/med...gale_ah293.jpg

    N. subperusia lysa.Prodably not in N. Thailand; HW postdiscal band & submarginal always close ;inner dark striae absent ; black spot without blue scalings;FW band not dislocated.
    http://3.bp.blogspot.com/-CCzm1ZlQsQ...rusia+lysa.jpg


    TL Seow: Cheers.
    PS. one more N. pactolus is recognised by its large squarish HW submarginal spot 6, & flattened out spots 4 & 5; the white striae tend to be broad & fuzzy; black spot always with blue scales.
    http://www.butterflycircle.com/check...0-%20Sunny.jpg
    https://c1.staticflickr.com/9/8351/2...8622f27d_b.jpg
    Last edited by Psyche; 12-Mar-2018 at 07:15 PM. Reason: wrong link/image.

  3. #3
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    Default

    Thank you for the details. I now need to go check some of my older identifications.

  4. #4
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    Dear Dr Seow,

    Could all these 3 Nacaduba shot at Northern Thailand be N.pactolus?

    IMG_0509v1.1.jpg

    IMG_0604v1.1.jpg

    IMG_9577v1.1.jpg


    Thanks.

    Best regards,
    David Chan

  5. #5
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    Yes, they are all N. pactolus.
    They are the white lines broaden & HW submarginal spot 6 squarish, the rest with straight inner margins.

    TL Seow:Cheers.

  6. #6
    Join Date
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    Dear Dr Seow,

    Thanks for the confirmation.

    Best regards,
    David Chan

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