Results 1 to 9 of 9

Thread: Nacaduba kurava?

  1. #1
    Join Date
    Jun 2006
    Location
    Western Singapore
    Posts
    4,312

    Default Nacaduba kurava?

    Is this six-line-blue Nacaduba kurava?

    6LB_MF.jpg
    Horace

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,947

    Default

    Yes. This would be a typical male Nacaduba kurava.

    In the past 6Line Blues were terribly confusing.
    The difficulty at the moment is between N. berenice & calauria where some examples appear intermediate.


    Nacaduba kurava.
    Male ; FW costa with innermost spot above the mid-cell band present .
    FW submarginal spots with rounded margins or at least rounded corners.
    FW postdiscal band almost always straight & entire.
    HW submarginal spot 6 typically large & rectangular.
    Male often with the dark striae poorly developed.
    Male upperside deeper blue with see thru bands from the underside.
    http://www.butterflycircle.com/check...eBlue-KSK3.jpg
    https://3.bp.blogspot.com/-CjZTM1-m2...0/DSC_0451.JPG
    http://www.butterflycircle.com/check...ze%20Siong.jpg
    Female typically with larger & rounder spots & dark striae prominent.
    Female upperside pale blue patch with the apex white.
    http://3.bp.blogspot.com/-Cm9PS58V6Y...0/DSC_0206.JPG
    SSp therasia Taiwan.
    https://en.wikipedia.org/wiki/File:N...w_20150718.jpg


    TL Seow: Cheers.

  3. #3
    Join Date
    Jun 2006
    Location
    Western Singapore
    Posts
    4,312

    Default

    Many thanks, Dr Seow for the ID confirmation.

    I have two shots of female Nacaduba laying eggs on Ardisia elliptica, taken on different days at the same location.

    6LB_O_female_01.jpg

    6LB_O_female_02.jpg

    Are both of them Nacaduba kurava? I am not too sure about the second one.
    Horace

  4. #4
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,947

    Default

    Post 3.

    The 1st is N. kurava.
    The 2nd with FW submarginal spots 4 & 5 sharply pointed is N. calauria.


    N. calauria : Dark striae strongly developed in both sexes.
    FW postdiscal band almost always straight & entire.
    FW submarginal spots 4 & 5 sharply pointed, triangular with the sides straight. HW submarginal spots 4 & 5 should also be pointed.
    Male showing the darkish violet blue upperside.
    https://wanderingbutterflyeffect.fil...b3ad98860e.jpg

    2 males & a pair, male on left.
    https://calbutterfliesworld.blogspot...line-blue.html

    Mating pairs, male on the left.
    http://www.butterflycircle.com/check...llen%20Tan.JPG


    Nacaduba berenice You raised a series in the past & the markings were very variable.
    Dark striaes strongly developed in both sexes.
    FW postdiscal band often broken or dislocated.
    Submarginal spots varies, irregular ; spots 4 & 5 if pointed, the tapering sides tend to be incurved.
    Male upperside showing the pale lavender blue.
    http://1.bp.blogspot.com/-xFQx2YUBf8...nice+icena.jpg

    Male from India upperside.
    https://commons.wikimedia.org/wiki/F...e_(5)_male.jpg

    Different males from Singapore.
    http://www.butterflycircle.com/check...drick%20Ho.jpg
    http://www.butterflycircle.com/check...obby%20Mun.jpg

    Mating pair male on the left.
    https://farm2.staticflickr.com/1819/...438e93dd_c.jpg


    Many examples are confusing.
    eg.
    1. N. berenice The prominent dark striae exclude N. kurava male.
    https://4.bp.blogspot.com/-dUSIc7vcZ...ce%2Bicena.JPG

    2. N. kurava male. The poor dark striae exclude N. berenice male. Correction : Probably best to leave as N. berenice male. spots are pointed.
    http://3.bp.blogspot.com/-bXXmAXE8wN...0/DSC_0236.JPG


    TL Seow: Cheers.
    Last edited by Psyche; 11-Apr-2021 at 12:23 AM.

  5. #5
    Join Date
    Jun 2006
    Location
    Western Singapore
    Posts
    4,312

    Default

    Many thanks, Dr Seow for the Nacaduba ID and the detailed comparison information for the three Nacaduba spp.
    Horace

  6. #6
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,947

    Default

    To complete the quartet.

    Nacaduba beroe neon.
    FW innermost costal spot above the midcell band absent.
    Male with the dark striae weak to obsolete.
    FW postdiscal band typically broken or dislocated.
    Male upperside deeper purple blue than in calauria.
    Female darkish blue with FW submarginal spots which may be blue or white.

    Three males.
    https://wanderingbutterflyeffect.fil...f39fce860b.jpg
    http://2.bp.blogspot.com/-2iA9V4YMtR...0/DSC_0245.JPG
    http://www.butterflycircle.com/check...drick%20Ho.jpg

    Female; This female have a vague mark like a third costal spot but the upperside (shown by Sunny) is darkish blue with blue FW submarginal spots.
    http://www.butterflycircle.com/check...5_1-copy-4.jpg


    Ionolyce helicon . Very common & often confused with N. beroe.
    FW innermost costal spot absent (as in N. beroe.)
    FW postdiscal band irregular & often serially dislocated at each vein.
    HW submarginal spots chevrons (V-shaped) rather than lunulate (lunar shape)
    Males.
    Typical.
    https://1.bp.blogspot.com/-qzpnbNn4L...e-ZhuangYY.jpg
    Looking more like N. beroe.. 2nd pic possibly hybrid., like beroe but HW submarginal spots pointed. Correction: N. beroe based on FW postdiscal band being barely dislocated at vein 4 & rounded HW.
    http://www.butterflycircle.com/check...0Ben%20Jin.jpg
    https://farm1.staticflickr.com/810/4...4104af90_o.jpg
    Females.
    http://3.bp.blogspot.com/-_tCoAYTboN...e+(female).jpg
    https://singapore.biodiversity.onlin...0123?imageId=0
    Possibly with hybrid blood. Correction : Female N. beroe variant; HW shape is totally wrong for I. helicon female, & FW postdiscal band can be undulate in female beroe.
    http://2.bp.blogspot.com/-6y12N-hHpl...e-HoraceT2.jpg


    TL Seow: Cheers.
    Last edited by Psyche; 03-Apr-2021 at 01:47 AM.

  7. #7
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,640

    Default

    Surely a bit off topic, but it's great to see you commenting again dr Seow! Hope you're well.
    cheers
    Jonathan

  8. #8
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,947

    Default

    Thank you Jonathan.
    I am fine. Wishing you well too.


    TL Seow: Cheers.

  9. #9
    Join Date
    Jun 2006
    Location
    Western Singapore
    Posts
    4,312

    Default

    Another male 6-Line-Blue to identify. With the dark striae strongly developed, N. kurava is ruled out.
    Given that the FW sub-marginal spots are not pointed (ruling out N. calauria), I am left with the id of N. berenice. Am I right?

    6LB_12Apr21.jpg
    Horace

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Join us