Need HELP !!

[Oakleaf]

Dacalana penicilligera and Dacalana cotys are seeming quite alike. Can anyone please tell me the difference between them! Thanks in advance.

https://www.flickr.com/photos/125106066@N02/21484481513/in/dateposted-public/

Is it D. penicilligera !!

Sylhet, Bangladesh.

[Psyche]

It is D. penicilligera.

The easiest way is to look at the white band on the forewing.

If the FW white band widens at the costa or forward margin, it is D. cotys.
http://www.ifoundbutterflies.org/sp/1138/Dacalana-cotys

If the FW band is the same width at the costa it is D. penicillegera.
http://www.ifoundbutterflies.org/sp/960/Dacalana-penicilligera

TL Seow :Cheers.

[Oakleaf]

Thanks a lot sir.. :)

Sir, I am very much confused among all those five cerulean, present in our country!! Can you please help!

[Psyche]

The five Jamides are J. celeno , pura, alecto, elpis, & bochus.

All Jamides have the white lines forming a sharp spike near the inner margin of the hindwing differentiating them from Nacaduba.

They can be divided into two groups by looking at the forewing band.
1. Forewing main band (middle or 2nd) straight & unbroken.......J. celeno & pura.
2. Forewing main band broken into several parts............J. bochus. elpis & alecto.

There are many erroneous images on the net & it can be very confusing.

Jamides bochus :FW main band broken ;dark brownish underside ; marginal & submarginal spots rounded; upperside darkish blue.
Pair Male on the right.
https://upload.wikimedia.org/wikipedia/commons/e/e1/Jamides_bochus_by_kadavoor.jpg

Jamides alecto; rather large ; white lines thick especially on lower half of FW; Upperside male FW broad border & HW with dark spots.
http://www.ifoundbutterflies.org/media_images/1a_7/tbe967.jpg
http://www.ifoundbutterflies.org/media_images/2014/141_992-158-5460bb5c3ef70-1.jpg
female
http://www.ifoundbutterflies.org/media_images/2015/118_3767-691-54d4da7b9b355-1.jpg

Jamides elpis. smaller but similar to alecto;white lines thin ; male upperside FW border thin ;HW without spot.
http://www.ifoundbutterflies.org/media_images/2014/97_591-45-5437f97cf3608-2.jpg
http://www.ifoundbutterflies.org/media_images/JamidesElpis/JamidesElpis_RohanLovalekar_ag624.jpg

I'll deal with celeno & pura later. They are very confusingly similar.

TL Seow : Cheers.

[Psyche]

Jamides celeno & pura. FW main (2nd) band straight & not broken.

Jamides celeno. Common, open areas & forest.
HW black spot often somewhat flatten, with short or absent silvery side-bars.(very variable)
White lines often chaotic & misaligned.(very variable)
Male upperside FW with a broad dark border variable. margin of both wing dark.
Dsf underside submarginal spots forming a neat narrow band.
http://www.ifoundbutterflies.org/media_images/JamidesCeleno/JamidesCeleno_RohitGirotra_ak442.jpg
pair male on the left.
http://www.ifoundbutterflies.org/media_images/1a_7/a-28729.jpg
http://www.ifoundbutterflies.org/media_images/2015/135_2808-754-54a2c068d9910-1.jpg

Jamides pura. rather rare , forest.
HW black spot often with long silvery side-bars, appear upright; white lines usually well-aligned (very variable)
Male upperside FW wsf with just a dark thin line as border margin of HW very light.
DSf undersde submarginal spots discrete , a series of lunulate (crescentric) marks.
http://www.ifoundbutterflies.org/media_images/1a_7/a-29243.jpg
http://www.ifoundbutterflies.org/media_images/1a_7/a-29245.jpg
http://www.ifoundbutterflies.org/media_images/1a_7/a-29242.jpg
http://www.ifoundbutterflies.org/media_images/1a_11/a-28803.jpg

TL Seow: Cheers.

[Oakleaf]

Thanks a lot sir for your help. :)

[Oakleaf]

Sir, then, I think this one is J. pura, isn't it!!

https://www.flickr.com/photos/125106066@N02/22009077666/in/dateposted-public/lightbox/

[Psyche]

The features are very variable for both species.

In peninsular Malasia J. pura usually have long silvery side bars on the black spot, but these seem to be often absent in India.
J. pura Malaya. Male ,upperside & female.
http://1.bp.blogspot.com/-1cdTLzHI39w/U0o9K9A5C1I/AAAAAAAAN3U/w6UbIKJHNIM/s1600/DSC_0122.JPG
http://2.bp.blogspot.com/-R4NvKEz-6ec/U0o9KVU3rKI/AAAAAAAAN3Q/Q5mcHSSnVYg/s1600/DSC_0106.JPG
https://farm6.staticflickr.com/5494/14239610788_5965d57a1b_c.jpg

In India the silvery side-bars are mostly missing, making ID very difficult.
Note the upperside shows the wing margins to be only lightly darkend.
J. pura India.
http://indiabiodiversity.org/biodiv/img/Jamides_pura/60_gall.jpg
https://c2.staticflickr.com/6/5458/8869877748_5e427b2c98_b.jpg

In your post 7 pica bit of the opposite HW upperside can be seen between FW & HW.
This appears white with the border not darkened.
It is probably right as J. pura.
In J celeno the margins of both wings are strongly black.
https://commons.wikimedia.org/wiki/File:Jamides_celeno_04.JPG
http://www.neutron.phys.ethz.ch/Lepidoptera/Lycaenidae/P2060003.JPG

TL Seow : Cheers.

[Oakleaf]

Thanks a lot sir for your help. You are so helpful.. :)

[Oakleaf]

Sir, is it Nacaduba pactolus! Thanks in advance.. :)

Sylhet, Bangladesh.

https://www.facebook.com/photo.php?fbid=1105564586141986&set=gm.971004656255908&type=3

[Psyche]

Post 10.

N. pactolus is right.
There are two bands on the FW , so 4line blue.
N. pactolus white lines broad ; dark lines in band obscure or absent; submarginal spots margin straight or concave.

N. hermus. dark lines poor or absent. submarginal spots arched or dome-shaped.
http://www.ifoundbutterflies.org/media_images/2014/85_2223-259-5488870ce999c-1.jpg

N. pavana; dark lines in bands strongly developed.
http://www.butterflycircle.com/checklist/mugshots/Nacaduba%20pavana%20singapura/NP_adult_male_02.jpg

TL Seow:Cheers.

[Oakleaf]

Thanks a lot sir.. :)