A spiky brown caterpillar on the underside of a leaf

A spiky brown caterpillar on the underside of a leaf

These 2 have been on their chosen leaf for a whole day & a bit now. The spikes are looking a little deflated. I'm thinking they are about to shed again☺️ That means there's 2 more molts to go & then they will vanish off to somewhere to turn into chrysalis🥰 #RichmondBirdwing #Caterpillar #ThirdInstar