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Thread: Hesperiidae ID Request - Singapore

  1. #1
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    Post Hesperiidae ID Request - Singapore

    Dear Dr Seow,

    My name is Lumin Ong and I'm a new member here! May I request ID for the following Skippers:

    1. Pelopidas sp. from Pulau Ubin? The forewings on this individual are longer than what I see usually in a P.mathias!
    Pelopidas 1.jpg
    Pelopidas 2.jpg
    iNaturalist link: https://www.inaturalist.org/observations/153819927

    2. Potanthus sp. May I also ask what does it mean by black-dusted veins? Sometimes I see that the "dust" is under the vein.
    Potanthus 1.jpg
    iNaturalist link: https://www.inaturalist.org/observations/155343215

    3. Telicota sp.
    Telicota1.jpg
    iNaturalist link: https://www.inaturalist.org/observations/143650776

    4. Telicota sp.
    Telicota2.jpg
    iNaturalist link: https://www.inaturalist.org/observations/145763821

    5. Telicota sp.
    Telicota3.jpg
    iNaturalist link: https://www.inaturalist.org/observations/158729745

    6. Skipper shot by a friend
    FunnySkipper.jpg
    iNaturalist link: https://www.inaturalist.org/observations/108346427

    Thank you so much in advance!!

    Cheers,
    Lumin Ong
    Last edited by loomins_zoomins; 25-Jun-2023 at 01:38 AM.

  2. #2
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    1. Female Pelopidas mathias.
    Female have longer wings & a longer profile shape.

    Two very similar species.

    Pelopidas mathias.
    Male UpF with spots 2 & 3 typically quadrate.
    A line thru the two cellspots cut the brand.
    Underside grey tinged & with a dirty look.
    Males.
    https://www.inaturalist.org/observations/155136942
    https://4.bp.blogspot.com/-vqr7KmROf...perside_01.jpg
    https://3.bp.blogspot.com/-NQjrfm7_w...enedict_01.jpg
    Females.
    https://www.butterflycircle.com/chec...hee%20Ming.jpg
    https://4.bp.blogspot.com/-Zld9bl5md...S_adult_01.jpg


    Pelopidas agna.
    Male UpF spots 2 & 3 narrow.
    A line thru the 2 cellspots bypass or just tipped the brand.
    underside with a cleaner uniform look, no dirty shading.
    Males.
    https://www.inaturalist.org/observations/153167531
    https://www.ifoundbutterflies.org/si...bee5e238-3.jpg
    https://2.bp.blogspot.com/-yFt6Y2FL2...A_male_06a.jpg
    https://1.bp.blogspot.com/-tQNuynda7...A_male_06b.jpg
    Females.
    https://2.bp.blogspot.com/-ygTUZGa_y..._female_01.jpg
    https://live.staticflickr.com/579/22...f00c7df8_b.jpg
    Last edited by Psyche; 28-Jun-2023 at 03:05 PM.

  3. #3
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    2. Female Potanthus omaha.

    Typically P. omaha is rather dull ochreous yellow but there are many intermediates between this species & P. ganda.

    Potanthus omaha. Dark dusting as in this individual.
    Abdominal end yellow, although the female may have some dark shading dorsally (above).
    Veins across HW band dark dusted on both sides.
    This include the veins on the underside FW.
    Males.
    https://www.butterflycircle.com/chec...obby%20Mun.jpg
    https://www.inaturalist.org/observations/147590181
    https://www.flickr.com/photos/44691276@N06/46238257944
    https://www.butterflycircle.com/chec...se_site_02.jpg
    Females.
    https://www.inaturalist.org/observations/119696872
    https://4.bp.blogspot.com/-6A1sOPm3b...thus+omaha.jpg
    https://www.inaturalist.org/observations/164215749
    pair with typical dull colour.
    https://www.inaturalist.org/observations/128747575



    Potanthus ganda.
    The male of P. ganda is described as strongly reddish. However most examples in Singapore are not.
    There are intermediates with P. omaha making ID difficult in some cases.
    Veins generally not dark- dusted or only barely so.
    Darker blackish shading.
    Males.
    https://www.inaturalist.org/observations/131869696
    https://www.inaturalist.org/observations/123350481
    https://thumbs.dreamstime.com/b/pota...-246630531.jpg
    https://3.bp.blogspot.com/-QZmu9xfHU...Bunderside.jpg
    Male with the described reddish tone.
    https://www.inaturalist.org/observations/16581975

    Females.
    https://2.bp.blogspot.com/-X9BG2_Zk_...t_Adult_02.jpg
    https://2.bp.blogspot.com/-Ht4NZzQND..._underside.jpg


    A third species with yellow abdominal end,P. confucius, recorded in Singapore may still be extant.
    Typically the FW spots are broadly overlapping & in the male upperside, the band is continuous without interruption by dark veins.
    Underside band e3dged with dark spots & ground lightly shaded.
    https://wingscales.com/Hesperiidae/P...nfucius-dushta
    https://c8.alamy.com/comp/2ARHHTY/tr...ka-2ARHHTY.jpg
    Addendum.
    Probable male P. confucius. Too yellow to be P. ganda ; veins not darken; FW spots broadly overlapping.
    https://www.inaturalist.org/observations/12289699
    Addendum 2.
    Singapore. Federick Ho. 10+ years ago. Male.
    https://3.bp.blogspot.com/-B2W0fVicL...-confucius.jpg
    Last edited by Psyche; 06-Jul-2023 at 10:55 PM.

  4. #4
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    3. Female, 4&5. males.
    Telicota besta.

    This is much the commonest species in Singapore.
    The identification based on on the underside can be very confusing.


    Telicota besta.
    This can be rather confusing as fieldshots colour range from ochreous to orange.
    Male brand arcuate placed near the inner border ie adjacent to the FW cell.
    Underside veins across band lightly darkdusted or with prominent raised veins & shadowlines.
    Males.
    https://1.bp.blogspot.com/-UaQyq4Qv0...B_adult_01.jpg
    https://3.bp.blogspot.com/-NbpYa8Xex...0/DSC_0294.JPG
    https://4.bp.blogspot.com/-wFWDdWMLn...0/DSC_0131.JPG
    https://1.bp.blogspot.com/-6-BjVfqOI...male_up_01.jpg
    https://images-wixmp-ed30a86b8c4ca88...DSdQn1a_R-OTVo
    Females. FW with cellend upper bar longer.
    https://2.bp.blogspot.com/-P5w37zUj7...male_up_01.jpg
    https://www.inaturalist.org/observations/96594886
    https://4.bp.blogspot.com/-OEM0FaXJU..._female_01.jpg
    https://1.bp.blogspot.com/-GqK3ID-7M...sta%2Bbina.jpg


    Telicota linna.
    Male brand narrow & in the middle of the black space.
    Female with both cellend bars unequally short.
    Underside veins not darken in both sexes.
    Underparts often paler.
    Males.
    https://alchetron.com/cdn/telicota-6...resize-750.jpg
    https://www.inaturalist.org/observations/148087973
    https://www.inaturalist.org/observations/149193940
    https://2.bp.blogspot.com/-79Gj7N-1G...TL_male_01.jpg
    https://3.bp.blogspot.com/-qDEk4MIq_...TL_male_05.jpg
    Female.
    https://www.inaturalist.org/observations/131436418
    https://2.bp.blogspot.com/-V0JtdnjTg..._female_02.jpg
    https://2.bp.blogspot.com/-GfwkAkMIT...male_up_01.jpg
    https://thaibutterflies.com/wp-conte...1-1080x720.jpg


    T. augias.
    Male brand large straight & almost fully occupying the black space.
    Often strongly orange all over, including head & body.
    Fairly uniform shade all over. Adominal end orange.
    Underside HW veins not darken in the male.
    Female with underside HW veins lightly dark , HW band deeper orange.
    Males.
    https://3.bp.blogspot.com/-f8o_ke_F-...alm%2BDart.jpg
    https://www.inaturalist.org/observations/61654039
    https://1.bp.blogspot.com/-Hp7OPF_eJ...as-augias).jpg
    https://c2.staticflickr.com/6/5336/9...ff7fdc56_b.jpg
    https://2.bp.blogspot.com/-6riT3uzre...ias_male_1.jpg
    https://3.bp.blogspot.com/-y3LkExqbZ...ias_male_2.jpg
    Females.
    https://www.inaturalist.org/observations/20417040
    https://4.bp.blogspot.com/-oeax9BCEj...ias_female.jpg
    https://static.inaturalist.org/photo...688/large.jpeg


    Telicota colon.
    Male brand arcuate & placed near the cell (as in T. besta)
    Male FW spots with long vein stripes , spot 4 & 5 staggered out ie spot 5 is farther out than spot 4.
    Female with upper cellend bar long; spots 4 & 5 reduced, distorted, spot 5 often notched in the sides/bisected.
    Males.
    https://www.inaturalist.org/observations/132503926
    https://www.butterflycircle.com/chec...colon2-KSK.jpg
    https://www.butterflycircle.com/chec...colon3-KSK.jpg
    Females.
    https://www.inaturalist.org/observations/6234960
    https://www.inaturalist.org/observations/151591307
    https://www.inaturalist.org/observations/19901445
    https://static.inaturalist.org/photo...833/large.jpeg
    https://inaturalist-open-data.s3.ama...397/large.jpeg
    Last edited by Psyche; 29-Jun-2023 at 04:03 AM.

  5. #5
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    6. Female Ampittia dioscorides.
    Female.
    https://www.ifoundbutterflies.org/si...695_236055.jpg


    TL Seow: Cheers.

  6. #6
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    Thank you Dr Seow !!

  7. #7
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    Dear Dr Seow,

    I was scrolling through my Potanthus photos and noticed this unusual individual shot in March 2023.

    Potanthus1 (1).jpg
    iNaturalist link: https://www.inaturalist.org/observations/152367590

    The top three forewing spots appear very detached from other spots compared to other Potanthus omaha shots I've photographed or seen! Please advice ID. Thank you so much in advance!

    Cheers,
    Lumin Ong

  8. #8
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    Post 7.
    Female Potanthus serina.
    The oval black 'hole' denotes a female.
    FW spot 5 much smaller than spot 4 .

    For Potanthus ID it is wise to get an underside shot ,upperside shot & the abdominal end.

    POTANTHUSFW.png

  9. #9
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    The Potanthus species my be divided into two groups.

    A. The male have a yellow abdominal end & at most a thin black line basally.
    The female may have some dark shading at the abdominal end.
    The species P. omaha, ganda & confucius have been described earlier.

    B. The male have a distinct black band or black shading.
    The females similar but often less dark.
    The species in Singapore are.

    Potanthus serina.
    Large size FW17mm ie twice the size of P. omaha.
    FW spot 5 smaller than spot 4.
    HW with a small spot 6 on the upper inner corner of the band.
    HW ground tawny with brownish shading rather than black.
    Typical males.
    https://www.butterflycircle.com/chec...rina-Bobby.jpg
    https://www.inaturalist.org/observations/145564953
    https://inaturalist-open-data.s3.ama...841/large.jpeg
    Females. Note FW spots 2 & 3 wide.
    http://www.butterflycircle.com/check...ale_Horace.jpg
    https://www.inaturalist.org/observations/69850815
    https://www.inaturalist.org/observations/19967403
    Female with FW spot 8 reduced.
    https://www.inaturalist.org/observations/6148686


    Potanthus trachala. FW 15mm.
    FW spots 4 & 5 without overlapping subapical spot 8 or postdiscal spot 4.
    Male FW spots with strongly crescent margins
    UnF spots strongly spiky.
    HW upper spot of band strongly projecting.
    Males.
    https://www.inaturalist.org/observations/146029796
    https://4.bp.blogspot.com/-kvlAhJLLs...la-tytleri.jpg
    Females. Note FW spots 2 & 3 narrow/quadrate.
    https://www.inaturalist.org/observations/125304657
    https://www.butterflycircle.com/chec..._female_01.jpg
    Female with FW spot 8 absent.
    https://www.inaturalist.org/observations/134156361


    Potanthus mingo FW 12mm .Small.
    FW spots 4 & 5 with varying degree of overlap above & below them
    UnH band strongly edged with diffuse dark spots .
    Males.
    https://3.bp.blogspot.com/-f3wB2A2uj...0/_MG_1531.jpg
    https://3.bp.blogspot.com/-lQGrUAdKo...0/_MG_1529.jpg
    https://www.inaturalist.org/observations/166586148
    https://www.inaturalist.org/observations/148688475
    Female left.Note male FW with large overlap between spot 3 & 4, so female cannot be P. trachala.
    https://2.bp.blogspot.com/-tFtROXZYi...us%2Bmingo.JPG



    Potanthus juno.FW 14mm.
    FW with spot 8 absent or vestigia.
    FW spot 5 typically smaller than spot 4 (as in serina.0
    Underside lightly dark dusted.
    HW upper end of band tend to be rounde; spot 6 absent.
    Male.
    https://3.bp.blogspot.com/-eLxO6Cqrl...it%2BBrown.jpg
    Females.
    https://1.bp.blogspot.com/-WroJpPq0U...Dart-KohCH.jpg
    https://www.inaturalist.org/observations/144847300



    TL Seow: Cheers.
    Last edited by Psyche; 06-Jul-2023 at 11:00 PM.

  10. #10
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    Thank you Dr Seow for the ID and detailed guide to Potanthus key ID features!

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