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Thread: Skippers ID clarification in Singapore

  1. #1
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    Default Skippers ID clarification in Singapore

    Hi Dr. Seow,

    Appreciate if you could help me verify my IDs for the following skippers.


    1a. Potanthus omaha

    14 Nov 2021_USRP.jpg

    1b. Potanthus omaha

    DSC_0358.jpg

    2a. Borbo cinnara

    7 Oct_USRP.jpg

    2b. Borbo cinnara

    DSC_0371.jpg

    3. Telicota besta

    6 Dec 2021_Seletar farmway a.jpg6 Dec 2021_Seletar farmway b.jpg

    4. I am unable to get further than Telicota sp.

    21 Oct_UPRP.jpg

    Thank you!

  2. #2
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  3. #3
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    2a Pelopidas agna.


    2b. Borbo cinnara.

    In Pelopidas occassionally the HW cellspot may be lost or obscure.


    Pelopidas agna.
    Pelopidas have longer antennae, w2ith narrower club.
    FW 3 subapical spots less arcuate .
    P. agna more uniformly brown
    http://3.bp.blogspot.com/-Hw681ALm5F...ded+Swift+.jpg
    https://2.bp.blogspot.com/---kNw2cMz...A_male_05a.jpg
    https://1.bp.blogspot.com/-tQNuynda7...A_male_06b.jpg


    P. mathias have greyer & 'dirty' ground colour.
    https://3.bp.blogspot.com/-NQjrfm7_w...enedict_01.jpg


    Borbo cinnara.
    Shorter antennae with thicker, stubbier clubs.
    Subapical spots more arcuate.
    HW typically three spots , spots 2, 3, & 6.
    Ground tinged green, face & chest whiter.
    https://2.bp.blogspot.com/-jMZu5Yy4Y...ederick_01.jpg
    http://www.butterflycircle.com/check..._female_01.jpg
    http://2.bp.blogspot.com/-KaVjdL_FAM...lt_Khew_01.jpg

  4. #4
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    3. Telicota besta male.


    4. Telicota besta female.


    Telicota besta. FW spots 4 & 5 more or less aligned.
    Only the face paler.
    Male with raised veins usually lightly dark dusted.
    Male brand set nearer inner margin of black space ,where the triangular orang patch is.
    https://1.bp.blogspot.com/-6-BjVfqOI...male_up_01.jpg
    https://2.bp.blogspot.com/-EcRIOq2iv...t_male_-04.jpg

    Female.
    https://4.bp.blogspot.com/-OEM0FaXJU..._female_01.jpg
    http://1.bp.blogspot.com/-GqK3ID-7Ml...sta%2Bbina.jpg



    Female of T. colon similar but spots 4 & 5 small, distorted & staggered out.
    http://1.bp.blogspot.com/-grsw9HIBWI...n%2Bstinga.jpg
    https://static.inaturalist.org/photo.../original.jpeg
    https://inaturalist-open-data.s3.ama...6/original.jpg




    TL Seow: Cheers.
    Last edited by Psyche; 18-Dec-2021 at 04:34 PM.

  5. #5
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    Thanks Dr Seow for the explanations!

    Would this then by P. omaha?

    Would you consider the veins in this photo to be dark dusted?

    DSC_0549.jpg

    Thanks!

  6. #6
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    Yes. I would say they are P. omaha.
    At least the HW veins continue as dark dusted crossing the marginal zone, to the margin.
    Ideally the upperside HW would be available for confirmation.
    Perhaps some gene introgression (hybrid element) in the male.
    The female is more obvious comparing with typical P. ganda females.
    P. ganda.
    http://2.bp.blogspot.com/-7ap54Ani6S...tanthus-sp.jpg
    https://3.bp.blogspot.com/-e_HuBihng..._underside.jpg
    http://www.butterflycircle.com/check...t_Adult_02.jpg


    TL Seow: Cheers.
    Last edited by Psyche; 22-Dec-2021 at 07:10 AM.

  7. #7
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    Ok thanks for clarifying Dr Seow.

    Apologies for adding on but two more skippers for verification please.

    Could this be Erionota thrax based on the almost straight termen and acute forewing apex?

    DSC_0997.jpg

    Also, is the following sufficient to ID it to Astictopterus jama?

    DSC_1073.jpg

    Thank you!

  8. #8
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    Post 7.

    1. Female Erionota acroleuca apicalis.

    E. acroleuca is by far the commonest species in Singapore as its larva feeds on various palms while that of E. thrax & torus feed on Banana which would be a rare plant in Singapore.


    E. acroleuca. Smaller than the other two. FW 25/27 mm.
    Male antennal club wholly white above; female about half white.
    FW margin straight.
    HW patch constricted/narrowed in the upper half.
    Males.
    http://www.butterflycircle.com/check...nny%20Chir.jpg
    http://www.butterflycircle.com/check...drick%20Ho.jpg
    Females.
    https://2.bp.blogspot.com/-oGOIfwCnq..._female_01.jpg
    https://ftp.funet.fi/index/Tree_of_l.../torus-2fv.jpg



    E. thrax. large FW 31/37 mm.
    Male with antennal club 2/3 - 3/4 white; Female about half white.
    FW margin straight.
    HW patch more or less uniformly wide.
    Males.
    https://wanderingbutterflyeffect.fil...0f3c25860d.jpg
    http://www.farelli.info/pages_books/...nota_thrax.htm
    Females.
    https://upload.wikimedia.org/wikiped...ota_thrax1.jpg
    https://www.ifoundbutterflies.org/me...unte_ag436.jpg



    E. torus Large FW 30/36 mm.
    Male antennal club 2/3- 3/4 white; female about half white.
    FW margin convex.
    HW patch broad throughout.
    Male.
    https://inaturalist-open-data.s3.ama...9/original.jpg
    Females.
    http://www.butterflycircle.com/check...2012--0882.jpg
    https://alchetron.com/cdn/erionota-t...esize-750.jpeg

    On the continent E. torus have more rounded FW eg India.
    https://en.wikipedia.org/wiki/Eriono...-06-10-001.jpg




    2. Astictopterus jama.
    Note winhgshape & prominent bulging palpi (labial palps).
    http://www.butterflycircle.com/check...ew%20-%203.jpg
    http://www.butterflycircle.com/check...ew%20-%201.jpg



    TL Seow: Cheers.
    Last edited by Psyche; 26-Dec-2021 at 02:15 PM.

  9. #9
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    Default

    Thanks Dr Seow!

    And yes i did not notice any bananas where I found the Erionota

  10. #10
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    Default

    Can I add on this species.

    Could this be Potanthus serina?

    DSC_0478.jpgDSC_0428.jpg

    Thanks in advance!

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