Lascar for ID

[Commander]

Dr Seow, I've put this down earlier as P. hordonia. Shot back in 2009. Any views?

26856

[Psyche]

It should be the female P. sandaka.

There is a tremendous amount of confusion between the two species.
As the male genitalia are similar one wonders if anyone have done a DNA analysis.

The situation is complicated in the north where there are wsf & dsf (grey band narrower).

Basically I will stick with the forms in P. Malaysia & Singapore where there is only wsf. It is however possible for dsf & intermediates to occur here.

The typical males are not difficult to separate.

P. sandaka sandaka wsf .
FW orange submarginal band intact , continuous & generally wider the inner grey band.
Male FW postdiscal band ( consisting of a round head & a foot running along the lower margin)genrally large & long.
HW male with a white speculum which may be visible as a white line or highlight below the FW.
http://nlliew66butterflies.blogspot.com/2013/07/the-common-lascar-pantoporia-sandaka.html
Singapore males.
https://1.bp.blogspot.com/_rzo8wjfyCsM/S_qG3iESjZI/AAAAAAAAGoo/KHbAWLGMapQ/s1600/CL_adult_Federick_02_c.jpg
https://2.bp.blogspot.com/-76dEIhRQ1YA/UJYr-8FUOII/AAAAAAAAHHs/i0WruaOQUi4/s640/DSC3090+Common+Lascar.jpg

Probable females Singapore.
https://www.butterflycircle.com/checklist/mugshots/Pantoporia%20hordonia%20hordonia/CL_adult_06_puddling.jpg
https://www.butterflycircle.com/checklist/mugshots/Pantoporia%20hordonia%20hordonia/Common%20Lascar%20-%20Federick%20Ho.jpg


P. hordonia hordonia wsf.
FW inner grey submarginal band broad & wider than the orange band to the outside, in dsf the grey band is narrower & may be beaded.
FW postdiscal band with a smaller & shorter foot slanting inwards.
HW with a small grey speculum.
http://nlliew66butterflies.blogspot.com/2015/07/the-common-lascar-pantoporia-hardonia.html
Taman Negara.
https://www.learnaboutbutterflies.com/Pantoporia%20hordonia%20001a.jpg
Singapore male.
https://www.samuibutterflies.com/02_images/travels/largerphotos/pantoporiadindinga.jpg
https://1.bp.blogspot.com/-oiSX3-kyPRk/Tk-9CD1-ziI/AAAAAAAAGZI/i5qORnzy7V4/s1600/CommonLascar-KSK4.jpg
Female, Thailand (with orange band obscure. )
https://i.pinimg.com/originals/0a/f2/90/0af29065cd231720cd6868fd389661b5.jpg
Female, Java.
https://3.bp.blogspot.com/-ELNd5T1m_GQ/VBf6usWidtI/AAAAAAAAAUc/2B3yFp54qDo/s1600/IMG_7404e1.JPG

Probale female Singapore but labelled as P. sandaka Note wide grey band.
https://singapore.biodiversity.online/species/A-Arth-Hexa-Lepidoptera-000472?imageId=0


If Fleming's collection is accessible in the Museum , you could take a look at the females of both species.


TL Seow; Cheers.

[Commander]

Thanks Dr Seow! Will go take photos of the Fleming Coll, when I have a chance to, and then do some more comparisons. Indeed these two species are so alike as to have been missed or mis-identified.