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horace2264
02-Jan-2015, 10:06 PM
Are these two Mycalesis perseus?
I have been monitoring this group of Bush Browns for a while, and I would like to confirm the species ID.

Psyche
02-Jan-2015, 10:35 PM
Yes, they are both M. perseus.
For a moment, I thought there was a possibility of M. horsfieldi.
Note on the HW the submarginal stria & the ocelli are close together in the upper half but open up to form a gap in the lower half.

Often in M. perseus the FW spots form an arc, but not here.

TL Seow :Cheers.

horace2264
03-Jan-2015, 12:29 AM
Thanks, Dr Seow for the confirmation. :)

BTW, what are the characteristic features of M. horsfieldi which we should look out for?

Psyche
03-Jan-2015, 01:51 AM
Mycalesis horsfieldi.
The striae are not broadly whitened like in perseoides /visala . ie similar to perseus/mineus.
HW lower 4 spots more or less in line.
FW with several spots & always one in space 1b.
Upperside FW ocellus rather obscure.
Overall like perseoides without the extensive white & the 'tooth' in the dark discal line.

Common in the East coast islands eg Tioman.

M. horsfieldi Java.
http://lh3.ggpht.com/-cFk801LxtXg/Te-H04HQeqI/AAAAAAAACCY/JRqqGnTsD3g/Bushbrownbutterfly_Mycalesishorsfiel%25255B7%25255 D_thumb%25255B6%25255D.jpg?imgmax=800

TL Seow: Cheers.