Heliconius antiochus

Heliconius antiochus, the Antiochus longwing, is a butterfly of the Nymphalidae family. It was described by Carl Linnaeus in 1767. It is found from Panama to the Amazon region. The habitat consists of riparian forests.

Adults have blue-black wings with two transverse white or yellow bands on the distal part of the forewings. They are a Müllerian mimic of Heliconius wallacei, Heliconius sara and Heliconius congener.

The larvae are gregarious and mostly feed on Passiflora species from the subgenus Astrophea. Full-grown larvae have a yellow body with a black head and reach a length of about 12 mm.