1. Pelopidas conjuctus male.
FW spots yellow & at least twice as large as the white HW spots.
Upper cellspot if visible often large & oblong.
Many misidentification on the web.
2. Baoris female presumbly B. farri.
The pale patch at the HW cellend is diagnostic if present.
Note also the more strongly banded abdomen.
In other countries, B. farri female (& often male as well) is fully spotted thus the name Complete Paintbrush Swift. https://www.ifoundbutterflies.org/si...02226b-2_0.jpg https://www.ifoundbutterflies.org/si...ra_ad839_0.jpg
In Singapore most females are not fully spotted. So an element of doubt here.
3. Caltoris cormasa male.
Typial example. Note the reddish tone.
4 Caltoris malaya male.
The male is rusty brown & the paler female ochreous brown.