Prosotas aluta?

[MinuteMaid]

Dr. Seow,

I need your help once more. Are these Prosotas aluta? Or some sort of Nacaduba. I shot P. aluta before at Upper Seletar many months back, but doesn't quite look like this.

#1



#2 different individual



both the same butterfly?

[Psyche]

Yes, they are both Prosotas aluta male.

As stated in the text of C&P4 the forewing postdiscal band is dislocated at vein 4 & the lowestmost spot in space 3 is shifted inwards.

This appears to be a very reliable feature, as a check thru numerous 6-line Blues do not show this.

Additional helpful features are.
1 The forewing uppermost submarginal spot (in space 6) is unusually large.
2. The hindwing submarginal spot in space 3 (just above the eyespot) is a sharp arrowhead.

No. 2 is remarkably like a Nacaduba, but these features together help to nail the ID.

TL Seow

[MinuteMaid]

Thanks Dr. Seow!

After checking through my pictures, it appears I have many pctures of this species previously mislabeled.

I need to clear my Nacaduba files one day.