Common Five Ring Dry Season
I didn't know this existed with butterflies - the butterflies that emerge in the dry season have a different number of spots than the ones that come out in the wet season (July here). The wet season version would have three rings on the bottom wing instead of two seen here.
Species: Ypthima baldus (common fivering)
John Harvey Photo > Trips out of the Country > Hong Kong 11 > Common Five Ring Dry Season
The little spikes at the bottom on this individual makes it easier to identify as a Common Jester. This colour pattern is quite common and there is quite a bit of variation in the pattern within each species.
Species: Symbrenthia lilaea (common jester)
John Harvey Photo > Trips out of the Country > Hong Kong 11 > Common Jester
Glassy Tiger On Billygoat Weed
There are a variety of butterflies that look pretty similar. Thankfully I have a book of local butterflies which makes it easier to figure out which of the similar types this is.
The butterfly is feeding on a weed introduced from the new world. The weed contaminates feed (it is poisonous) and spreads real well.
John Harvey Photo > Trips out of the Country > Hong Kong 11 > Glassy Tiger On Billygoat Weed