Quote Originally Posted by moloch View Post
I saw a few butteflies near the falls. Some of these responded to shrimp paste bait including these Blue Helens (Papilio prexaspes).

This is quite puzzling. Papilio prexaspes is not recorded from Borneo(as far as i know). The only other species this could be is P. fuscus dayacus which lacks the orange lunules on the dorsal hindwing. Or it could be a local form of fuscus especially since this species is very variable throughout its wide range; prexaspes was once a ssp of fuscus as well.