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Thread: Separation of Halpe wantona and arcuata

  1. #1
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    509

    Default Separation of Halpe wantona and arcuata

    Two Halpe (I assume) skippers from my northern Thailand collection, from around 500 metres giving me some headaches.

    Image 1. I am fairly confident is H. wantona. Would that be correct? And how can I rule out H. arcuata?

    Image 2. I originally had as Pithauria murdava, but since it does not match other images I have of this species very well, I now am considering it to be a Halpe species. But which? H. acuata possibly? But does not seem correct for that either.

    With thanks.

    Image 1.
    skipper 1.JPG

    Image 2.
    skipper 2.JPG

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,731

    Default

    It is nearly impossible to ID Halpe from a single view.

    1 looks to be H. wantona as by comparing the field shots below.
    http://yutaka.it-n.jp/hes/91410001.html
    The FW is lowered too much & so there is no way of knowing a cellspot is present.

    2 looks like H. arcuata but the subapical spots are distinctly yellow.

    H. veluvana is the species where the FW spots are stated to be yellow.

    Both H. arcuata & veluvana have spots 2 & 3 widely overlapping.
    H. veluvana always have a FW cellspot & H. arcuata almost never.

    http://yutaka.it-n.jp/hes/91350001.html
    http://yutaka.it-n.jp/hes/91420010.html



    TL Seow: Cheers.

  3. #3
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    509

    Default

    Many thanks for the feedback. General indictors are fine, as, as you say, single photos are so difficult.

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