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Thread: ID help needed (26 Aug 2022)

  1. #1
    Join Date
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    Default ID help needed (26 Aug 2022)

    Dear Dr Seow, is this Nacaduba berenice icena or Ionolyce helicon merguiana? Thanks!

    NA1.jpg

    Is this Malay Yeoman?
    MY1.jpg
    Cher Hern

  2. #2
    Join Date
    Nov 2010
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    1. Male Nacaduba beroe.
    Fairly typical.
    FW with innermost costal spot (above the mid-cell band) absent.
    Dark striae within bands largely obsolete.
    HW submarginal spot in space 3 above the black spot lunulate (cescent) not pointed.
    https://inaturalist-open-data.s3.ama...113/large.jpeg
    https://inaturalist-open-data.s3.ama...5224/large.jpg


    Ionolyce helicon.
    Can look similar to N. beroe.
    FW innermost costal spot absent.
    FW postdiscal band serially dislocated.
    https://inaturalist-open-data.s3.ama...9699/large.jpg
    https://inaturalist-open-data.s3.ama...981/large.jpeg


    Nacaduba berenice.
    FW inner costal spot almost always present.
    FW postdiscal band dislocated or crooked.
    Dark striae with bands strongly developed.
    https://inaturalist-open-data.s3.ama...4214/large.jpg
    https://inaturalist-open-data.s3.ama...2682/large.jpg

  3. #3
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    If this is taken in Singapore than it is a new record.

    Cirrichroa surya siamensis. Correction: Cirrochroa malaya.
    UnF discal band expanded upwards to the costa.
    HW white discal band narrow ,of uniform width throughout.
    http://www.samuibutterflies.com/expe...rrochroasurya/
    http://yutaka.it-n.jp/hel/710190010.html

    30 years ago this was still largely known from the northern half of Peninsular Malaysia.


    Cirrochroa emalea emalea.
    UnF band expanded at costa but more widely.
    Hw discal markedly constricted in space 5.
    http://www.butterflycircle.com/check...eoman-KSK2.jpg
    http://www.butterflycircle.com/check...eoman-khew.jpg


    C. tyche.
    UnF discal of nearly uniform width, the inner margin very irregular.
    https://1.bp.blogspot.com/-_5lIYcugi...an_Khew_03.jpg
    https://1.bp.blogspot.com/-gH0F2cUzT...ederick_01.jpg



    TL Seow: Cheers.
    Last edited by Psyche; 26-Aug-2022 at 09:59 PM.

  4. #4
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    Correction: 2 is definitely Cirrochroa malaya.

    This species resembles C. surya on the underside is found in Sundaland but seem not in Thailand.
    The upperside resenbles C. emalea.
    https://en.wikipedia.org/wiki/Cirroc...layamalaya.jpg
    The underside resembles C. surya.
    Pahang.
    https://farm5.static.flickr.com/4017...8c9065e3_o.jpg


    TL Seow; Cheers.
    Last edited by Psyche; 26-Aug-2022 at 10:00 PM.

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