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Thread: An Ypthima sp from n Thailand

  1. #1
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    155

    Default An Ypthima sp from n Thailand

    On a recent trip to Omkoi (n Thailand) I photographed these two Ypthima sp (two individuals), that were in an area with many Common Fivering Y. baldus, and looked very different. I would appreciate some comments on these two, which I assume are the same species. The spacing between the ocelli looks very different to others I have in my collection (especially the spacing between 3 and 4 on the hindwing), plus the shape of the ocelli is slightly oval. I am thinking these could be Pallid Fivering Y. savara or maybe Malayan Fivering Y. nebulosa. Y. lisandra can be ruled of as the lower three ocelli are not in alightment.

    Many thanks.

    Image 1.
    IMG_0274.JPG

    Image 2.
    IMG_0283.JPG

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    4,494

    Default

    Ypthima is another terribly difficult genus.
    WSf have the strae sharply defined ;in dsf they are fuzzy.
    So these two are wsf or intermediate forms.

    Y. savara. large FW 24-26 mm. HW twin dark fascia rather straight & parallel throughout.
    http://4.bp.blogspot.com/-CPR5gKMNEd...0/DSC_0022.JPG
    http://www.samuibutterflies.com/02_i...himasavara.jpg

    Y. nebulosa. HW dark fasciae curved.In peninsular Malaysia this is known as Y. horsfieldi humei (complicated story)
    Ground usually whiter & striae more contrasting.
    Uemura states the upperside FW ocellus have a round yellow ring , but his images do not bear this out.
    http://1.bp.blogspot.com/-XUtnXSxzY5...ing-BobbyM.jpg
    https://2.bp.blogspot.com/-jH_X9qRp4...u/DSC_0433.JPG
    https://www.thaibutterflies.com/wp-c...a-1080x675.jpg

    Ypthima baldus ;HW fascie curved; ground colour buff ,less white ;intermediates common in Thailand, dsf with blurry striae & obscure ocelli.
    https://wingscales.com/content/record/637-1-2c030.jpg
    http://www.ifoundbutterflies.org/med...607ac256-1.jpg
    http://www.ifoundbutterflies.org/med...50515c97-1.jpg

    Y. singorensis; similar to Y. baldus but smaller .FW < 18mm.
    http://beta.boldsystems.org/index.ph...e?taxid=754521

    THey are likely to be intermediate forms of Y. baldus.

    TL Seow: Cheers.

  3. #3
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    155

    Default

    Many thanks for the feedback. Appreciate that this group is very difficult.

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