ID requested for Hesperiidae

[butterflyrajib]

Dear Sir/Madam,
I am sending herewith two pictures (same individual i.e. ventral view & dosrsal view) for indentification purpose. Image captured from Jaguli-Nadia, West Bengal, India in the month of November 2018. Please guide me alongwith key points.

Regards,
Rajib Dey

[Psyche]

Pseudoborbo bevani.

There are several features together which quickly confirmed the ID.

Pseudoborbo bevani.
1. FW subapical spots more in line.
2. FW spot 2 quadrate or rounded.
3. FW spot in space 1b absent or vestigial.
4. UnH spots not well-defined.
http://yutaka.it-n.jp/hes/93070001.html
https://www.ifoundbutterflies.org/media_images/2014/187_1504-575-546d50d2810f0-1.jpg
http://farm9.staticflickr.com/8468/8141467426_20efa00688_h.jpg
https://www.thaibutterflies.com/wp-content/uploads/2016/07/Borbo-bevani-1080x675.jpg

Borbo cinnara.
FW subapical spots not in line /in an arc.: FW spot 2 crescentic/irregular: Spot 1b strongly present: UnH spots well-defined.
http://yutaka.it-n.jp/hes/93060001.html
https://www.ifoundbutterflies.org/media_images/BorboCinnara/BorboCinnara_KSaji_ad956.jpg
https://www.ifoundbutterflies.org/media_images/BorboCinnara/BorboCinnara_KSaji_ad957.jpg
http://www.butterflycircle.com/checklist/mugshots/Borbo%20cinnara%20cinnara/FS_adult_female_01.jpg

TL Seow: Cheers.

PS. ID Correction This is Parnara bada . The HW cellspot when present is diagnostic for Parnara.

[butterflyrajib]

Thanks Sir for your valued explanation. One thing make me confused. one lower end cell spot present at UNH. For Pseudoborbo bevani, cell end spot will be present?

[Psyche]

Thanks Sir for your valued explanation. One thing make me confused. one lower end cell spot present at UNH. For Pseudoborbo bevani, cell end spot will be present?


You are quite right here.
I actually look at the HW cellspot for some time, but the upperside shot showing 2 FW cellspots & prominent greenish hairs confused me.
Typically only Parnara guttata have 2 FW cellspots, but the UnH is nowhere like P. guttata.
I thought the cellspot is probably an artifact ? injury mark.

Several factors suggest this is Parnara bada.

1. The HW cellspot is correctly in the position for Parnara.
2. No of HW spots is variable in P. bada , in extreme case none.
3. The antennal club seem more stubby.
4. The straighter aligned FW subapical spots are as for Parnara bada.
5. It is possible for rare example of P. bada to have FW cellspots.

In retrospect the presence of a HW cellend spot if present is always diagnostic for Parnara

Thus the ID should be corrected to Parnara bada.

TL Seow: Cheers.

[butterflyrajib]

Thanks for your valuable pictorial explanation. Now we conclude that some special cases, Parnara Bada also have UPF cell spot/spots.

Regards,
Rajib Dey

[gkbaliga]

Hmm Interesting.

Thanks Dr Seow and Rajib for the discussion points

[Psyche]

The Parnara species in India are particularly difficult to ID in India.


In the southern half of India there is only Parnara bada.
This is very variable & ocassionally has a FW cellspot.

Taken in Amboli ,Maharashtra . They are very likely to be of a single species.
Pair with single cellspot.
https://www.ifoundbutterflies.org/media_images/ParnaraSp/Parnara_HemantOgale_ai398.jpg
https://www.ifoundbutterflies.org/media_images/ParnaraSp/Parnara_HemantOgale_ai395.jpg

With 2 cellspot. The FW subapical & row of UpH spots indicate it is Parnara.
https://www.ifoundbutterflies.org/media_images/2015/97_6607-644-5566d7c7ba7bd-1.jpg

The range of Parnara ganga extend to south Gujarat, indicating it is may to be found in Amboli as well.
P. ganga may rarely have a single lower FW cellspot, but the HW very rarely has a spot 6.
http://2.bp.blogspot.com/-R91gL8h9sCM/Vd_ByExbz5I/AAAAAAAAGtI/F4xOEm8NKok/s1600/Parnara%2Bganga1.jpg

It is reasonable to say these 3 are very likely to be P. bada.
It does show that P. bada may ocassionally have 2 cellspots.


The other thing to consider is whether the two pix in post 1 are of two different individuals.
They are on two different plants as can be seen from the leaf textures.

TL Seow: Cheers.

[butterflyrajib]

Dear T L Seow, Both are same individual.

Regards,
Rajib Dey

[Psyche]

Dear T L Seow, Both are same individual.

Regards,
Rajib Dey


Thanks.

I am assuming this is P. bada, but it is hard to separate it from P. ganga
https://www.ifoundbutterflies.org/media_images/2015/97_6607-644-5566d7c7ba7bd-1.jpg

TL Seow: Cheers.