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Thread: A Potanthus species from Chiang Dao

  1. #1
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    554

    Default A Potanthus species from Chiang Dao

    Am having a hard time with this one. From Chiang Dao, at an altitude of around 800 metres.
    Notable tiny in the field. Much smaller than other Potanthus in the area.
    My closest estimate is Potanthus confucius dushta but very unsure.
    Many thanks

    IMG_3108.JPG

    IMG_3113.JPG

    IMG_3121.JPG

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    6,835

    Default

    This should be male Potanthus nesta.
    Salient points
    1. small size ,2. FW band continuous , slight overlap, margins straight, 3 HW band not projected out strongly in upper part, 4. Underside lightly shaded .

    This is similar to the Potanthus in this blog.
    http://butterfliesvietnam.blogspot.m...p-dart-sp.html
    This can be ID'ed as P. nesta on the following reasons.
    The list of known species is stated in the text.
    The following can be eliminated thus.
    1. Abdominal ends yellow ,without a black band, P. omaha, ganda, confucius, & pava.
    2. Species with distinctively different fascia ,or markings ,P. trachala, pallida, serina, palnia, juno, lydia , tibetana & rectifasciata.
    3. Male with a brand at FW mid vein 1b. P. mara .mingo.

    Note small size FW 12 mm.

    Evans' description of P. nesta.
    Male without a trace of a brand, markings yellow, FW - 12 mm.
    Apical spots usually conjoined to band ; HW band usually continue into space 6 & spot in space 7 conspicuous.
    Underside HW variable; band may or may not contrast with the ground & is usually edged with black spots.

    TL Seow: Cheers.
    Last edited by Psyche; 15-Apr-2018 at 11:43 AM. Reason: typo

  3. #3
    Join Date
    Dec 2016
    Location
    Thailand
    Posts
    554

    Default

    Many thanks for the detailed explanation.

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