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Thread: Some additional Arhopala species from s Thailand

  1. #1
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    Default Some additional Arhopala species from s Thailand

    A few Arhopala species from central Peninsula Thailand I am having difficulties to identify.
    Any assistance gratefully received.

    All photographed around Phang-nga.

    1) I think A. phaenops.
    2) I think A, ariana or A. evansi.
    3) Not sure. Either A. epimuta, A muta, or A. moolaiana.
    4) Not at all sure. Cannot find a good match.

    Image 1.
    409A6261.JPG

    Image 2.
    409A6220.JPG

    Image 3.
    409A6214.JPG

    Image 4.
    409A6190.JPG

  2. #2
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    #1 Arhopala agrata binghami from the lack of costal spots on the forewing and the last costal spot of the post-discal band being very faint. Spots 6 and 7 on the hindwing are also unique. Also, the forewings are much more angular than the hindwings and this contrast gives it a striking appearance which can be seen here

    #4 This one's interesting. I could be wrong but i think this has to be Arhopala delta because of the lack of costal spots on the forewing and the fact that it is tailed despite spots 6 and 7 on the hindwing being out of line. The only other species with these characters is A. allata which it is not because that species has more rectangular spots.
    Aaron Soh

  3. #3
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    Default

    Many thanks for the feedback on those two. Having checked indeed #1 looks like agrata, although the race in southern Thailand should be the nominate according to the literature.

  4. #4
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    1. Using the key this does sort of keyed out as A. agrata.
    However A. agrata is quite consistent in appearance.
    FW spot 9 obscure/absent HW spot 6 large trapezoid.
    P. Thailand
    https://thaibutterflies.com/Butterfl...hopala-agrata/
    Singapore.
    https://2.bp.blogspot.com/_0EK80AsaR...3-Arhopala.jpg
    P. Malaysia.
    http://nlliew66butterflies.blogspot....niceville.html
    Examples from Borneo are similar.

    This one differs in the FW band being very narrow & the HW spot 6 differently shaped.
    Possibly a variant or aberration.

    2. A member of the alea subgroup, HW band completely dislocated at vein 2.
    Either A. selta or phaenops.
    Probably A. selta from the purple flush.
    https://thaibutterflies.com/Butterflies/arhopala-selta/
    http://thaibutterflies.com/project_t...pala-phaenops/


    3. A. moolaiana.
    HW toothed at vein 2 & faint white dot at tornal cilia.
    HW spot in space 1b broadly 'V' shaped. HW spot 6 large.
    http://thaibutterflies.com/project_t...ala-moolaiana/


    4. Should be correct as A. delta.
    The deciding factor is HW band is only partially dislocated at vein 2.
    In the similarly marked A. lurida/atosia the band is comletely dislocated at vein 2.

    A. delta.
    https://en.wikipedia.org/wiki/Arhopa...taMUpUnAC1.jpg
    A. allata.
    https://en.wikipedia.org/wiki/Arhopa...taMUpUnAC1.jpg
    A. lurida.
    https://en.wikipedia.org/wiki/Arhopa...daMUpUnAC1.jpg


    TL Seow: Cheers.

  5. #5
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    Default

    With many thanks for the detailed replies.

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