Please help to ID

[JitLeangFoo]

Photos recorded in Singapore.

1. Arhopala major?
25900

2. Nacaduba sanaya?
25901

[Psyche]

1. Arhopala epimuta.
FW with spot 4 dislocated & displaced outwards; HW postdiscal spot 6 astride spot 5 & the cellend bar; HW tornus with a white cilial dot.


2. is rather tricky ; Dark striae within bands obsolete.
HW postdiscal band in space 4 well separated from the submarginal spot ; in space 5 they are close.
FW postdiscal band straight & without dislocation.

The appearance is very similar to a female N. sanaya but all sanaya have the FW postdiscal band broken at vein 6.
Male & 3 female N. sanaya showing the FW band dislocated at vein 6.
http://1.bp.blogspot.com/-XEY63bA0JPA/UrRJN5MTKUI/AAAAAAAAM-8/MvgQVQTQHKk/s1600/HFH_0286+Nacaduba+sanaya+elioti.jpg
http://2.bp.blogspot.com/-TbqxcQ50Shw/UYprdEbfx7I/AAAAAAAAKD0/hj9dIUlB2M0/s1600/HFH4470+Nacaduba+sanaya+elioti+(Jewel+Four-Line+Blue).jpg
http://3.bp.blogspot.com/-Og2S_eim3us/Tq1PQa_eaUI/AAAAAAAAE5E/KA_5k1knUFU/s400/DSC2592Nacaduba%2Bsanaya%2Belioti%2B%2528Jewel%2BF our-Line%2BBlue%2529.jpg
http://www.butterflycircle.com/checklist/mugshots/Nacaduba%20sanaya%20elioti/jewel%204%20line%20blue%20-%20horace%20tan.jpg

That leaves only two possibilities .N. pendleburyi & N. solta.

N. pendleburyi recorded in Singapore but I can't locate the correct image anymore.
This BOLD image is actually that of N. pactolus.
http://v3.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=312959

In any case the FW band in N. pendleburyi is curved whereas this is very straight.
This suggest it may be N. solta which would be a new record.

N. solta male ? Borneo.
https://farm5.static.flickr.com/4061/4624687812_2ba53fcd7c.jpg


TL Seow: Cheers.

[Psyche]

There are a lot of variations in each species & the key features are not precise.
Looking thru the Bornean Nacadubas N. solta is out of the picture as the HW submarginal spots & the postdiscal band/spots are widely separated.

It resembles N. hermus closely.


TL Seow: Cheers.

[JitLeangFoo]

Could it be an aberration for a N.sanaya as we found another N.sanaya nearby.
25902

[Psyche]

Post 4.

None of the features are absolute so it could still be a female N. sanaya.

Your post 4 image raised more question as the HW postdiscal band & the submarginal spots in space 4 & 5 are so close it suggest N. subperusia lysa, a species recorded from Singapore.


N. pendleburyi is unlikely as the submarginal spots are narrow so that postdiscal & submarginal spots are widely separated.


Of the three N. sanaya, hermus ,& subperusia all recorded in the past, the defining feature is.

N. sanaya :postdiscal band/pots & submarginal spots separated by at least 1/2 the width of the postdiscal band in space 4 & 5.

N. hermus & subperusia lysa ;HW postdiscal & submarginal spots very close ,almost touching.

As can be seen in sanaya & hermus this key feature is variable, possibly so too in subperusia.


N. hermus nearly always have metallic scales on the black tornal spot.
P.Malaysia.
https://3.bp.blogspot.com/-oYUpNLP4nPg/V1NvbiCF0FI/AAAAAAAAaKA/hIfJ4nXQbM0Gad2DQ0OdBLBADFfCNaCmwCLcB/s1600/DSC_2636.JPG
India.
https://www.ifoundbutterflies.org/sp/881/Nacaduba-hermus
female
https://www.ifoundbutterflies.org/media_images/2015/164_4799-368-550d774adcf69-1.jpg

This unIDed Singapore image is obviously male N. hermus.
https://farm4.static.flickr.com/3604/3296769587_a4ce508afc_o.jpg



Nacaduba subperusia lysa. Similar to N. hermus but lack metallic scales in black tornal spot.
Male.P.Malaysia
http://3.bp.blogspot.com/-CCzm1ZlQsQE/UrRNXf_V1vI/AAAAAAAAM_c/083nczhETzE/s1600/HFH_0013+Nacaduba+subperusia+lysa.jpg
https://3.bp.blogspot.com/-Bi5kACOeXZM/WJ0ItBFZOpI/AAAAAAAAce0/MQkAOXVhnNouFrdB1b85TCpMN-e0H97MQCLcB/s1600/DSC_2626.JPG
Probable female
Thailand.
https://thaibutterflies.com/wp-content/uploads/2016/07/Nacaduba-hermus-1080x731.jpg
Cambodia.
https://farm5.staticflickr.com/4569/38684991392_448cfa17b6_b.jpg


Best to leave it as ?N. sanaya until there are definitive examples.


TL Seow: Cheers.