The egg hatches in 4 to 7 days. Like other Papilio species the larva can evert a two-pronged horn-like osmeterium when it is irritated. While inactive, mainly during daylight hours, the young larva lies along the midrib of the underside of the leaf. From Wikipedia, the free encyclopedia. Throughout the caterpillar stage, if it is agitated it can evert a yellow-to-red osmeterium from the first segment, just behind the head.
Jaylene. Age: 28.
Papilio helenus is the nominate member of the helenus species group.
Arielle. Age: 31.
Hidden categories: Citation attribution Articles with 'species' microformats Commons category link is on Wikidata. Body brownish-black; collar, front of head and palpi white-spotted; tegulae white fringed; legs and antenna black. While inactive, mainly during daylight hours, the young larva lies along the midrib of the underside of the leaf. The osmeterium, when everted, is generally yellow to red.