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Thread: Curetis sperthis sperthis in Singapore.

  1. #1
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    Default Curetis sperthis sperthis in Singapore.

    A recent observation is Curetis sperthis.

    https://www.inaturalist.org/observations/181209566

  2. #2
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    The three species C. santana, sperthis & bulis belongs to a group characterised by a speckling of black dots .
    They can be quite confusing to separate from the underside alone in fieldshots due to perspective distortion.
    SPERTH.png
    Curetis sperthis sperthis.
    The diagnostic feature in the male is that the UpH space 7 is black.
    UpF postdiscal band band is more parallel to the margin in the lower half.
    HW postdiscal spot 6 & 7 are lunulate & in line, submarginal spots 6 & 7 likewise.
    These images are set specimens as the only way to ensure the IDs are correct.
    http://yutaka.it-n.jp/lyc3/84070001.html
    https://en.wikipedia.org/wiki/Cureti...isMUpUnAC1.jpg

    Note the observation matches the markings.
    In addition the broken part of the HW shows space5 marginal area largely black which is often in sperthis & bulis.
    (IN C. santana the black margin in space 5 is typically narrow.)


    Curetis santana
    HW space 7 mostly orange.
    UpF band oblique.
    UnH postdiscal spot 6 & 7 inline ,margins mostly straight.
    UnH submarginal spots 6 & 7 dislocated & out of line.
    http://yutaka.it-n.jp/lyc3/84050010.html
    https://ms.wikipedia.org/wiki/Cureti...caMUpUnAC1.jpg
    https://www.butterflycircle.com/chec...20-%20Mark.jpg
    http://www.butterflycircle.com/check...Sunny-Chir.jpg
    https://3.bp.blogspot.com/-iR9so13Eh...beam-NonaO.jpg
    http://www.butterflycircle.com/check...am)--Sunny.jpg


    Curetis bulis.
    HW space 7 at least half black.
    UnF band oblique.
    UnH postdiscal spot 6 tuck under spot 7.
    UnH submarginal spot 6 & 7 usually joined end to end.
    http://yutaka.it-n.jp/lyc3/84030010.html
    P. Malaysia.
    http://3.bp.blogspot.com/-r4mQgTdE6x...0/DSC_0074.JPG
    http://4.bp.blogspot.com/-tIUJ97is3R...C_0064-001.JPG


    TL Seow; Cheers.

  3. #3
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    I wonder which Curetis species is featured in the following picture (taken on 2 Oct 2007 at the Bukit Timah Nature Reserve)?

    Last edited by horace2264; 12-Sep-2023 at 12:11 AM.
    Horace

  4. #4
    Join Date
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    Hi Doctor Seow,

    what about this following observation?
    https://www.inaturalist.org/observations/149097954
    the more i look at the pictures, the more confusing they get!

    Skipping regards
    Zicky
    Zick Soh

  5. #5
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    Post 3.

    This is interesting because it looks to be Curetis bulis stigmata
    However this needs an upperside for confirmation.
    HW postdiscal spot 7 is large with rounded margin.
    HW submarginal spots 6 & 7 in line ,in a curve marked by black dots.
    Apical costa with more black spots.
    Examples from P. Malaysia.
    http://3.bp.blogspot.com/-Bvwvsyyu0X...C_0074-001.JPG
    http://2.bp.blogspot.com/--tFvF5ZTnC...0/DSC_0388.JPG
    http://3.bp.blogspot.com/-uWiwGCSeck...0/DSC_0691.JPG
    http://3.bp.blogspot.com/-r4mQgTdE6x...0/DSC_0074.JPG
    http://nlliew66butterflies.blogspot....ata-moore.html

    Compare Curetis santana malayica.
    HW postdiscal spot 7 with straighter margin usually.
    HW submarginal spots 6 & 7 strongly dislocated.
    FW costa with less black spots.
    http://www.butterflycircle.com/check...Sunny-Chir.jpg
    https://www.butterflycircle.com/chec...20-%20Mark.jpg
    http://www.butterflycircle.com/check...8404%20(2).JPG
    https://3.bp.blogspot.com/-iR9so13Eh...beam-NonaO.jpg


    Post 4.
    https://www.inaturalist.org/observations/149097954
    Male Curetis saronis sumatrana.

    Curetis in Singapore are divided into two groups.

    A. Ground speckled with black dots.

    A1. FW band nearly parallel to margin....C. sperthis.
    https://www.inaturalist.org/observations/126444840

    A2. FW band oblique......Submarginal spots 6 & 7 dislocated, out of line... C. santana
    http://www.butterflycircle.com/check...Sunny-Chir.jpg

    A3. FW band oblique ;HW submarginal spots 6 & 7 more or less aligned.... C. bulis stigmata.
    https://thaibutterflies.com/wp-conte...gmata-male.jpg


    B. Underside not speckled with black dots ; FW band parallel to margin.

    B1. Legs banded red /redbrown...................C. saronis.
    B2. Legs banded black..........................C. tagalica, regula .



    TL Seow: Cheers.
    Last edited by Psyche; 13-Sep-2023 at 05:30 PM.

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