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Thread: ID help for this moth from Sumatra please ?

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  1. #1
    Join Date
    Sep 2019
    Location
    Padang - West Sumatra - Indonesia
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    10

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    Thanks a lot for your help Dr Seow !

    E. marguerita is endemic of Sumatra (Zool. Meded. 10 (8): 129, (9: pl. 4, f. 1a-b)) : https://www.repository.naturalis.nl/document/149267

    Here is the approximate translation in English of the description :

    After related to I. oblitterans Feld. (male) Vein system similarly depicted on the adjacent text figure; the median makes a turn in the cell, so that it was initially very narrow, and suddenly broadened at the end. There is a fold in the cell with string scales and a brown spot beneath it
    from ditto scales to vein 3. Between veins 1 and 2 is another fold with modified scales, as with I. oblitterans Feld.

    The front wing veins 7, 8 and 9 are stalked in such a way that 8 and 9 come together at the same point, so that a trident is formed, or 8 and 9 very shortly after one another. The location of these three veins relative to SS a varies! For the female, 8 and 9 are always short on 7 (see text figure).

    Head, tegulae, patagia, thorax and abdomen end yellow; the first part of the abdomen gray; legs yellow to brown-yellow; the coxae and the bases of the femora turn yellow. Front wings very light brownish yellowish-white with a purple hue; the costa yellow or yellow-white. Rear wings white with a yellow tint, particularly marginal and apical. No trace of a wing drawing.

  2. #2
    Join Date
    Nov 2010
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    Malaysia
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    If the forewing of E. marguerita is very light brownish yellowish-white & it is related to E. oblitterans then it probably looks the same.
    https://www.africanmoths.com/pages/E...litterans.html

    If so this can only be E. prabana.


    TL Seow: Cheers.

  3. #3
    Join Date
    Sep 2019
    Location
    Padang - West Sumatra - Indonesia
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    Thanks Dr. Seow for your explanations. It helped me a lot.
    Cheers
    Nad

  4. #4
    Join Date
    Nov 2010
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    Malaysia
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    This gets very complicated.

    In checking correct examples of Eilema prabana one thing did not match well.
    There should be a dark patch on the prothorax.

    E. prabana.

    http://v3.boldsystems.org/index.php/...e?taxid=588636
    http://v3.boldsystems.org/pics/LEPMY...1399648792.JPG

    https://www.researchgate.net/figure/...fig1_267642363

    http://virtualcollections.naturalsci...sa-tams-1935-1


    Singapore do have Brunia antica & E. prabana.

    E. prabana is described as very dark ie blackish grey.
    http://www.mothsofborneo.com/part-7/...siini_10_1.php


    Brunia antica in Singapore.
    https://www.inaturalist.org/observations/777156
    https://www.inaturalist.org/observations/14695527

    Likely Eilema prabana. Prothorax with a dark patch.
    https://www.inaturalist.org/observations/8488541
    https://www.inaturalist.org/observations/8427538

    The width of the yellow margin is likely a variable feature.


    Thus it is much more likely your pix are Brunia antica , that is if B. sarawaca does not occur in Sumatra.


    TL Seow : Cheers.

  5. #5
    Join Date
    Sep 2019
    Location
    Padang - West Sumatra - Indonesia
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    10

    Default

    Thank you Dr. Seow, the dark patch is indeed very visible on E. prabana.

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