I have been assuming BC members would recognise P. trachala from its size & spotting but Sunny's post " Skipper" have made realised otherwise.

Both P. confucius and P. trachala are very similar on their underside.
In P. trachala there is very little overlap between the two spots in space 4 & 5 and those above & below them.
The outer margins of the subapical spots and spot 3 are more deeply incised in trachala than confucius.
A valid P. confucius for comparison.
http://en.wikipedia.org/wiki/File:Po...ngtiap_002.jpg

2 is P. trachala.

TL Seow