In my photo collection there are a number of Neptis specimen from Sri Lanka, Thailand and Vietnam that I tentatively labeled as Neptis hylas.
However, I doubt if they are all correctly identified, in particular the one (no. 4) seen in Vietnam.
Would very much appreciate your opinion.
1. Neptis hylas?
Wellawaya, Sri Lanka, Jan 2013 web1130782.jpg
The 3 species in which the FW cell bar has a fracture line or is broken are Neptis hylas ,N. sappho & Phaedyma columella.
P. collumella may be ID'ed by the FW spot on the lower margin(dorsum) being large with a small spot above it (in space 1b). http://yutaka.it-n.jp/lim1/720470010.html
Neptis hylas & sappho are very similar & confusing.