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  1. #1
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    7,347

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    This is a fairly typical male Jamides alecto.
    Note the thick striae & the very sharp spike.
    The striae are yellowish but this is a normal variation.

    The three species can at times be very confusing especially the female.

    Jamides alecto
    FW postdiscal spot 3 is shifted well inwards until its outer margin is aligned with the inner margin of spot 4 above.ie there is no free hanging stria.
    The spike in HW space 1b formed by the lower end of the 3rd stria is sharp, especially in ssp agelades
    White striae are thick but may be mostly so on the lower FW.
    https://yutaka.it-n.jp/lyc4/81140010.html
    https://wingscales.com/Lycaenidae/Ja...alecto-alocina
    Males.
    https://www.ifoundbutterflies.org/si...924_272847.jpg
    https://www.ifoundbutterflies.org/si...e1bdd01f-3.jpg
    https://www.ifoundbutterflies.org/si...70b29d-1_0.jpg
    https://www.ifoundbutterflies.org/si...65e96a8b-1.jpg
    Females.
    https://www.ifoundbutterflies.org/si...070_242409.jpg
    https://www.ifoundbutterflies.org/si...381_255536.jpg
    Male on the right.
    https://www.ifoundbutterflies.org/si...fb467585-1.jpg

    Jamides elpis.
    UnF with usually no 'free hanging stria' as in alecto.
    UnH 2nd stria in space 7 not nearer to the 3rd stria in the cell ie as in alecto.
    Underside with thin striae.
    The white striae on the lower FW in the female are slightly thicker.
    Spike in space 1b less pointy or triangular.
    Note female from Chiang mai probably alecto.
    https://yutaka.it-n.jp/lyc4/81130010.html
    Males.
    https://www.ifoundbutterflies.org/si...cf3608-2_3.jpg
    https://www.ifoundbutterflies.org/si...0199da9d-1.jpg
    https://www.ifoundbutterflies.org/si...40d95c44-1.jpg
    Female from Singapore.
    https://www.butterflycircle.com/chec...obby%20Mun.jpg


    Jamides caeruleus.
    UnF spot 3 dislocation incomplete, the outer margin stria of spot 3 end as a free hanging stria (almost always).
    UnH 2nd stria in space 7 aligned with the 3rd stria in the cell or very close to it.
    UnH spike in space 1b triangular.
    Underside with a dusky grey shading but weak in the female.
    White striae are thin.
    https://yutaka.it-n.jp/lyc4/81120001.html
    Males.
    Thailand.
    https://wingscales.com/Lycaenidae/Ja...leus-caeruleus
    https://thaibutterflies.com/wp-conte...aeruleus-1.jpg
    P. Malaysia.
    https://4.bp.blogspot.com/-_MCB-ltsw...0/DSC_0723.JPG
    Singapore.
    https://www.butterflycircle.com/chec...20-%20Khew.jpg
    Females Singapore.
    https://www.butterflycircle.com/chec...race%20Tan.jpg
    https://www.butterflycircle.com/chec...race%20Tan.jpg
    This is probably J elpis. The striae on the HW are not aligned as in caeruleus.Visible upperside blue pale.
    https://indiabiodiversity.org/species/show/262571
    Uncertain.
    https://www.ifoundbutterflies.org/si...unte_af876.jpg


    TL Seow: Cheers.
    Last edited by Psyche; 03-Sep-2024 at 11:28 PM.

  2. #2
    Join Date
    Jun 2020
    Location
    Tripura, North Eastern India
    Posts
    77

    Default

    Thank you so much sir...

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