Thanks, TK. Looks like more attention has to be paid to these little 'brown jobs'. I'll send pics of some specimens that I did not have any confidence in ID'ing to you. All were captured during the 1997-2003 period in our nature reserves during the NParks surveys.
I had a specimen that I'd tentatively ID'ed as A. wildeyana - a very small specimen that corresponds to what Ben Jin found. It may be a better one for you to examine especially when there are uppersides to see.
Maybe we shall wait till 2011, and push the checklist past the 300 mark.