Page 3 of 8 FirstFirst 12345 ... LastLast
Results 21 to 30 of 80

Thread: ID help please

  1. #21
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,228

    Default

    Post 20.

    1 Potanthus ganda female.
    Veins may be slightly dark dusted at times; more orange than omaha & dark shading stronger.
    https://2.bp.blogspot.com/-Ht4NZzQND..._underside.jpg
    https://2.bp.blogspot.com/-X9BG2_Zk_...t_Adult_02.jpg
    Female P. omaha.
    http://4.bp.blogspot.com/-MF0Ou8Bsf6...0/DSC_0189.JPG

    2. Baoris farri male.
    The underside view shows a lot of the pale areas on the antennal ;Upper FW cellspot is round; HW with a cellend mark (where the hair tuft sprout on the upperside.)
    https://www.ifoundbutterflies.org/me...luri_ak295.jpg

    3 Caltoris cormasa female . Reddish tone is typical.

    4. Borbo cinnara female;
    The arrangement of the 3 main HW spots 2, 3, & 6 is typical. A small spot 4 is seen. Face & chest white.
    http://2.bp.blogspot.com/-jMZu5Yy4Yg...ederick_01.jpg

    5. Pelopidas mathias male.
    When the HW spots are tiny the cellspot may sometimes be absent. The UnH is irregularly pale shaded.

    P. agna male 1. with absent HW cellspot & 2 with HW cellspot barely present.
    http://1.bp.blogspot.com/-y9RT--lWNe...bo+cinnara.jpg
    http://2.bp.blogspot.com/---kNw2cMzX...A_male_05a.jpg

    Borbo have thicker antennal clubs. Also face & chest strongly white.

    Parnara bada have short stubby antennae.
    http://2.bp.blogspot.com/-r10tmE1ODK...rnara+bada.jpg

    TL Seow :Cheers.

  2. #22
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,625

    Default

    Dr Seow, thanks for the speedy response! I've been looking through older Caltoris shots too... In hopes of finding something unusual but they are all just cormasa.
    cheers
    Jonathan
    http://nypsbluebottle.blogspot.com/
    --- nothing happens by coincidence - everything is DESTINY ---

  3. #23
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,625

    Default

    One shot from the weekend.. Is this correctly Lasippa tiga? (ALso, is it possible to determine sex?) Thanks!

    Lasippa tiga male
    Last edited by Banded Yeoman; 07-Oct-2018 at 05:05 PM.
    cheers
    Jonathan
    http://nypsbluebottle.blogspot.com/
    --- nothing happens by coincidence - everything is DESTINY ---

  4. #24
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,228

    Default

    Yes 6this is a male Lasippa tiga.
    There should not be too much reliance on the tongue shaped spot at the cellend. It varies too much to be reliable.

    Submarginal spot 3 is 2x the width of the adjacent spot 4 above it. (note spot 2 is always narrow)
    This view in the set position (as in a museum specimen)
    If you view it sideway ,submarginal spot 3 is 2x the height of spot 4.


    The male is readily ID'ed by the longer foot along the dorsum (lower margin) of the spot in space 1b. The head (spot 2) is almost always attached to the foot in the male ;Also termen is slightly indented.
    http://www.butterflycircle.com/check..._Horace_01.jpg

    The female have a very short 'foot'; The head is usually detached & the termen is straighter, apex more rounded.
    https://c1.staticflickr.com/8/7297/1...aa7307b5_b.jpg
    https://wanderingbutterflyeffect.fil...2e0d89860b.jpg


    TL Seow: Cheers.

  5. #25
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,625

    Default

    Thanks for the pointers Dr Seow! Interesting that the sexes are actually so different on the upperside. I always assumed they were identical!
    cheers
    Jonathan
    http://nypsbluebottle.blogspot.com/
    --- nothing happens by coincidence - everything is DESTINY ---

  6. #26
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,625

    Default

    Some Potanthus species that were spotted during the drizzle yesterday morning... I've attempted to identify them. Hopefully the IDs (and sex) are correct!

    (Also, off topic, I've decided to post my images larger to help with spotting minute differences between species. The 1024 x 683 size also looks better on the mobile forums.)

    1) Potanthus trachala tytleri? Unsure which sex




    2) Potanthus omaha omaha male?




    cheers
    Jonathan
    http://nypsbluebottle.blogspot.com/
    --- nothing happens by coincidence - everything is DESTINY ---

  7. #27
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,625

    Default

    cont' from the last post: some Satyrinae!

    3) Mycalesis mineus


    4) Mycalesis perseus


    5) 3) Mycalesis perseus


    6) 3) Mycalesis mineus


    7) Ypthima horsfieldi
    Last edited by Banded Yeoman; 11-Jul-2019 at 07:22 PM.
    cheers
    Jonathan
    http://nypsbluebottle.blogspot.com/
    --- nothing happens by coincidence - everything is DESTINY ---

  8. #28
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,228

    Default

    Post 26.

    1a. This is probably female Potanthus ganda.
    FW shape termen rounded; FW cell with wider black 'hole.
    UnF spot 4 overlapping spot 3. Veins across FW spots not black dusted.

    1b Male Potanthus trachala. FW spot 4 & 5 without overlap above & below them; spots with concave margins; abdominal end black-banded.
    P. trachala male.
    http://4.bp.blogspot.com/_yzw2AzY2du...perside_01.jpg
    Two females.
    http://2.bp.blogspot.com/-zzPOcxjK2F...0/DSC_0246.JPG
    https://4.bp.blogspot.com/-prXDPS1KR...0/DSC_0073.JPG
    Female UnH showing spot 4 have no overlap with spot 3.
    http://www.butterflycircle.com/check...us_male_01.jpg

    2. This is quite difficult but since most of the veins appeared to be lightly black-dusted I leave it as P. omaha.
    The gemeral orangey appearance suggest P. ganda.
    P. omaha ;dull ochreous yellow ; veins darkened including on the FW.
    Males ; pair- female on the right.
    http://www.butterflycircle.com/check...obby%20Mun.jpg
    http://www.butterflycircle.com/check...drick%20Ho.jpg
    http://2.bp.blogspot.com/-IJRazQaHR5...0/DSC_0005.JPG
    http://2.bp.blogspot.com/-SeSVvRKmjX...thus+omaha.jpg

    P. ganda: More orangey; veins not or slightly dark-dusted; usually darker heavier shadings.
    2 males & 1 female.
    http://2.bp.blogspot.com/-7ap54Ani6S...tanthus-sp.jpg
    https://2.bp.blogspot.com/-r1T4ajMPu...25286%2529.jpg
    https://2.bp.blogspot.com/-Ht4NZzQND..._underside.jpg

    Post 27.

    3 & 6 Mycalesis mineus ; Indentation formed by HW ocelli triahgle skewed upwards.

    4 & 5. Mycalesis perseus :indentation formed by HW ocelli wider & deeper ;HW lower 4 spots out of line.; FW spots often in an arc.

    7. Ypthima horsfieldii ;whiter ground ; separated spots; spot 2 & 3 more level with the space 1b spots.


    TL Seow: Cheers.

  9. #29
    Join Date
    Oct 2009
    Location
    Singapore
    Posts
    1,625

    Default

    Thanks for the IDs Dr Seow!

    As for the Potanthus species, lighting conditions and post processing differences can really affect the colour of these yellowish-orange butterflies. One quick adjustment could make the skipper more yellow or more orange. To further the confusion, different screens and monitors display colours differently. The use of the "redness" as a characteristic for identifying P. ganda has to be supplementary only... Checking whether the upperside veins are dark dusted or not seems to me a more concrete ID key.

    I noticed that photographs of P. omaha showing strong dark dusting on the underside veins are often of more worn individuals. Perhaps the wear and tear also adds to the darkened veins. The Potanthus no. 2 (post 26) was very fresh and his could explain the lighter veins.

    Just out of curiosity, when dealing with Potanthus, would you say that the upperside features are more conclusive in determining the species?
    cheers
    Jonathan
    http://nypsbluebottle.blogspot.com/
    --- nothing happens by coincidence - everything is DESTINY ---

  10. #30
    Join Date
    Nov 2010
    Location
    Malaysia
    Posts
    5,228

    Default

    Quote Originally Posted by Banded Yeoman View Post
    Thanks for the IDs Dr Seow!

    As for the Potanthus species, lighting conditions and post processing differences can really affect the colour of these yellowish-orange butterflies. One quick adjustment could make the skipper more yellow or more orange. To further the confusion, different screens and monitors display colours differently. The use of the "redness" as a characteristic for identifying P. ganda has to be supplementary only... Checking whether the upperside veins are dark dusted or not seems to me a more concrete ID key.

    I noticed that photographs of P. omaha showing strong dark dusting on the underside veins are often of more worn individuals. Perhaps the wear and tear also adds to the darkened veins. The Potanthus no. 2 (post 26) was very fresh and his could explain the lighter veins.

    Just out of curiosity, when dealing with Potanthus, would you say that the upperside features are more conclusive in determining the species?
    Yes the colour is often very confusing in photos, but when it comes to skippers every little details help.
    In thr case of P. ganda it is less likely for it to be as pale & dull as in P. omaha, while many omahas appeared too orange.

    Here is a fresh P. omaha showing the darkened veins.
    http://www.butterflycircle.com/check...se_site_01.jpg

    The upperiside can also be confusing.
    Typical P. omaha with darkened HW veins.
    http://www.butterflycircle.com/check...20Tan%20CP.jpg
    https://www.nss.org.sg/gallery_image...107_resize.jpg

    Typical P. ganda.
    Bred by Horace.
    https://2.bp.blogspot.com/-dEQvLGTcj...lt_BTVC_01.jpg

    Probable P. ganda
    http://photobucket.com/gallery/user/...LmpwZw==/?ref=
    There are actually many examples where the veins are just a little black dusted & you are not sure if it is due to abrasion.


    TL Seow: Cheers.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Join us