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Thread: Id help please

  1. #1
    Join Date
    Jun 2020
    Location
    Tripura, North Eastern India
    Posts
    27

    Default Id help please

    Good evening Dr. Seow Sir
    I have keen interest in moths & I'm studying them in Tripura over the past few years. I found hawk moths are very interesting & some genus like Ambulyx, Acosmeryx, Macroglossum etc. each having similar looking species are rather difficult to identify. Therefore by means of this forum can you please provide me some guidance on how to identify similar looking species under the above genus....

    Just for the starting I'm posting images of species under the genus Ambulyx.
    Please help me with their identification providing keys if possible.

    1.
    hawwwk.jpg

    2.
    Ambulyx 12.jpg

    3.
    Ambulyx 11.jpg

    4.
    Ambulyx 10.jpg

    5.
    Ambulyx 9.jpg

    6.
    Ambulyx 8.jpg

    7.
    Ambulyx 6.jpg

    8.
    Ambulyx 5.jpg

    9.
    Ambulyx 4.jpg

    10.
    Ambulyx 1.jpg

    Thank you in advance....

  2. #2
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,939

    Default

    They are all Ambulyx substrigilis., a species widespread in the oriental tropics.
    (See light forms at bottom of webpage.)
    https://tpittaway.tripod.com/china/a_sub.htm
    They are recognised by dark veins & vriegated shadings.
    The lightly marked forms have often been confused with two other species found in Sundaland .
    They are A. pryeri & clavata.
    They are unlikely to have reach India though anything is possible.

    In specimen 2, 3, & 9 the variegation is slight & the suggestion is often of these two species.
    There are also much errors on the net.


    The middle dark vein which runs to the costa , is slightly curve up & widen a little.

    The other two species differ so.

    A. pryveri. Dark middle vein run straight to costa without widening.
    https://commons.wikimedia.org/wiki/F...phingidae).jpg


    In A. clavata: the middle dark vein is joined by an upward slanting dark line whch expand towards costa.
    https://inaturalist-open-data.s3.ama...jpg?1501073880
    http://sphingidae.myspecies.info/taxonomy/term/408

    Other species of Ambulyx do not have the veins prominently dark.


    Tl Seow: Cheers.
    Last edited by Psyche; 24-May-2021 at 08:50 PM.

  3. #3
    Join Date
    Jun 2020
    Location
    Tripura, North Eastern India
    Posts
    27

    Default

    Thank you so much sir

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