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View Full Version : Assistance to ID Hesperiinae Shot at Northern Thailand



David Chan
09-Sep-2018, 07:20 PM
Dear Dr Seow,

Please assist to help ID these butterflies. I have tried to ID by comparing against Antonio's checklist and pictures found on the internet.

Pic 1: Could this be a Large-spot Plain Ace (Thoressa hyrie)?
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Pic 2: Could this be a Moore's Ace (Halpe porus)?
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Pic 3: Could this be a Overlapped Ace (Halpe arcuata)?
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Pic 4: Could this be a Common Bush Hopper (Ampittia dioscorides)?
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Pic 5: Could this be a Moore's Ace (Halpe porus)?
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Pic 6: Not sure what this is?
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Pic 7: This butterfly is rather big. Looks like an Awl.
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Thanks for your help again. Hesperiinae are really hard to ID.

Best regards,
David Chan

Psyche
09-Sep-2018, 08:48 PM
1. Thoressa hyrie. Note orangetip antenna ;Blurry UnH.
https://www.ifoundbutterflies.org/sp/2910/Thoressa-hyrie

2. Halpe porus;HW band clearly delineated wit he veins dark; UpF with 2 large cellspot.
https://wingscales.com/Hesperiidae/Halpe-porus

3. Pithauria stramineipennis. NOte orangetip antenna. sharp FW; HW vague with a dark-ringed spot in space 6.
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Pithauria-stramineipennis-1080x721.jpg

4. Ampitta dioscorides. Note HW with vague irregular orange bands.
https://alchetron.com/cdn/ampittia-dioscorides-509365b4-9295-42c2-993d-f2cb944dfb8-resize-750.jpeg

Very similar A. maroides: UnH mostly orange with irregular black spots.
http://farm8.staticflickr.com/7298/10862365535_eee5a9f028_c.jpg

5. female Halpe porus :UnH have more spots.
https://farm1.static.flickr.com/487/18594706392_9608f211f7_b.jpg

6. Thoressa hyrie.

Pithauria murdava looks similar; Large size, sharper FW;FW subapical 6 much larger than spot 7 ; HW pattern different.
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Pithauria-murdava-1080x720.jpg
http://www.flutters.org/home/photogallery/plog-content/images/butterfliesbrnbspnbspnbsphesperiidae-the-skippers-br/subfamily-hesperiinae--brnbspnbspnbsp-genus-pithauria--straw-ace-/dark_straw_ace_1_monsoonjyotigogoi.jpg

7. This is rather worn ;The orange tip antenna suggest Thoressa or Pithauria.
The underside seem to have a series of spots.
In particular a large spot 6.
I think it is the female P. stramineipennis.


TL Seow: Cheers.

David Chan
09-Sep-2018, 09:56 PM
Dear Dr Seow,

Thanks a lot for the pointers.

Best regards,
David Chan