Papilio deiphobus rumanzovia
A series of the stages of the Scarlet Swallowtail or Scarlet Mormon butterfly. The caterpillar mimics the head of a small green snake and releases a reddish extension called osmeterium when disturbed or troubled which also mimics the tongue of a snake. The osmeterium also releases a foul smell. The Scarlet Mormon is an endemic species of the Philippines but are sometimes seen as vagrants in neighboring countries.
Lightly wooded terrain on citrus trees but most especially oranges and limes.
At first I thought it was a Common Mormon until the butterfly came out :3