Dear Dr Seow, what's this Arhopala? Thanks!
Dear Dr Seow, what's this Arhopala? Thanks!
Cher Hern
Probably Arhopala lurida (From C&P4, "Underside markings better defined... than atosia"). My personal observation is that the epimuta group members have a distinctive dark brown zig-zagged band at the termen of the ventral hindwing. Of course if the dorsal can be seen then this group is immediately recognisable.
Aaron Soh
This should be Arhopala lurida.
A. lurida & atosia are very similar on the underside .
In Langkawi A. lurida is common.
Common features; FW with postdiscal spot 4 shifted out (variably)
HW spot 5, 6, & more or less staggered, ie spot 6 is further in & spot 7 still more (often slight).
A. lurida.Underside more strongly defined & contrasted ie markings darker & stand out more.
HW typically with postdiscal spots 4 & 5 more or less aligned or at least by half.
HW submarginal spots more pointed.
In Langkawi a purple wash may be present giving a very strong contrast.
Examples from Langkawi
http://4.bp.blogspot.com/-RsKPooOdJp...rida+(TBC).jpg
http://3.bp.blogspot.com/-VQ_bV9tsmj...la++lurida.jpg
http://1.bp.blogspot.com/-EgsQ0eJHsk...urida+@+LS.jpg
Borneo
https://upload.wikimedia.org/wikiped...daMUpUnAC1.jpg
Probable lurida Malaya.
http://1.bp.blogspot.com/-77ePzykO37...0/DSC_0148.JPG
A atosia. Underside markings pale & poorly contrasted.
HW postdiscal spots 4 & 5 typically almost completely out of line.
HW submarginal spots flatter.
Singapore.
http://www.butterflycircle.com/check..._atosia_01.jpg
http://4.bp.blogspot.com/-vbDyPYyyT_...9-Arhopala.jpg
Malaya
http://4.bp.blogspot.com/-HeaqxUa0Tz...0/DSC_0138.JPG
http://malaysianinsects.web.fc2.com/Arhopala-atosia.JPG
Borneo.
https://species.wikimedia.org/wiki/A...aMFUpUnAC1.jpg
A. lurida is recorded from Singapore ,but as it differs little(Malayan form) from atosia it may have been overlooked.
TL Seow:Cheers.
Last edited by Psyche; 07-Dec-2015 at 11:46 AM. Reason: add. images