View Full Version : A Moth species from North Sumatra

16-Jul-2014, 12:02 AM
Dr Gabriella Fredriksson wrote to ask me about the ID of a moth species which has infested the forest there, and one which has attracted groups of orangutan to feast on them.

The best I can do is to identify it as an Achaea species, but what is the species ID? :hmmm:

16-Jul-2014, 01:10 AM
I think it should be Achaea eusciasta.
The FW discal mark is a black dot followed by a large oval/oblong spot.

TL Seow:Cheers.

16-Jul-2014, 08:10 PM
There are four widespread species of Achaea here which are very similar & can be pest.
They are A. janata, serva eusciasta, & mercatoria.

By comparing the cats of A. janata & serva , these two are very unlikely & can be ruled out.

The adult of A. mercatoria can be recognised by the falcate forewing tip.

This leaves Achaea eusciasta .

TL Seow:cheers:

16-Jul-2014, 09:14 PM
Many thanks, Dr Seow for the detailed explanation on the deduction process. :)
I have passed on the ID to Dr Gabriella Fredriksson.