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Thread: ID requested for Hesperiids species

  1. #1
    Join Date
    May 2018

    Default ID requested for Hesperiids species


    Dear Sir/Madam, I am sending two different individuals (bred specimen) for identification purpose. I confused with specimen no.: 02 where have seen small spot above cell at UnH but mid tibia is almost unspined. All early stages caterpillar same as like our previous discussion link

    You are requested to guide me along with ID.

    Rajib Dey
    Mob.: +91-9831632692
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  2. #2
    Join Date
    Nov 2010


    This gets very confusing.

    Are the larvae all from the same area on the same hostplant?

    The female of C. bromus is not known to have a spot in HW space 6.(as in 1.)
    Nor a HW cellspots + extra spots.(as in 2.)

    The upperside also resembles both Polytremis lubricans & Pelopidas conjuncta and these two need to be cross-checked.
    Unfortunately there is no male as the male is more distinctly different in the 3 species.
    There is a possibility of a hybrid here.
    This could take a while.

    TL Seow: Cheers.

    PS. I hope you have not published the article on the finding of Caltoris bromus.
    If all three are one species then logically they are all Polytremis lubricans.
    Last edited by Psyche; 29-Sep-2020 at 01:12 AM.

  3. #3
    Join Date
    Nov 2010


    Female Caltoris canaraica. (As discussed with Rajib).

    This is an eye-opener when a species appears far from its usual habitat.

    The confusion arise from several factors.

    1. Evans' description of Caltoris canaraica.
    " UpF upper cellspot always rather larger than the lower cellspot. UnH spots in space 2 & 3, which may be obscured by a broad central band of white scaling conspicuous in DSF."
    As noted in the bred specimens.
    The upper cellspot is not always larger.
    The UnH often have additional spots in space 4, 5, 6 especially in the female.

    2. Previous records of C. canaraica are all in S. India ,hundreds of kilometres from Kolkata.

    3. The larvae of C. canaraica , bromus & Polytremis lubricans are all rather similar with minor differences.

    Examples of C. canaraica with extra spots.

    With a tiny extra spot 5.
    With more spots in spaces 4, 5, 6.

    TL Seow: Cheers.

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