Definition
Graphium evemon is a species of butterfly in the family Papilionidae, commonly referred to as a swallowtail butterfly.
Overview
Graphium evemon belongs to the genus Graphium, which comprises a group of medium‑ to large‑sized butterflies known for their swift flight and often striking wing patterns. The species is distributed throughout parts of South and Southeast Asia, with confirmed records from countries such as India, Bangladesh, Myanmar, Thailand, Laos, Vietnam, and Malaysia. It inhabits a variety of forested environments, ranging from lowland tropical rainforests to montane woodland, where it is typically observed near host plants of its larval stages. Adult butterflies are most active during the warm months and are known to visit nectar sources on a range of flowering plants.
Etymology/Origin
The specific epithet evemon was assigned by the British entomologist William Chapman Hewitson when he described the species in the mid‑19th century (the exact year of publication varies among sources, commonly cited as 1855). The origin of the name evemon is not explicitly documented in the original description, and accurate information about its linguistic or commemorative basis is not confirmed.
Characteristics
- Morphology: Adults exhibit wings with a predominantly black ground colour and a metallic green‑blue sheen on the dorsal surface. Prominent white or pale green spots are present on the forewings and hindwings, and the hindwings bear the characteristic tail extensions typical of many Graphium species. The ventral wing surface is generally lighter, with a pattern of pale markings that aid in camouflage when the butterfly is at rest.
- Size: The wingspan of G. evemon is typically in the range of 70–90 mm, although precise measurements may vary among individuals and populations.
- Life cycle: Larvae feed on plants belonging to the Rutaceae family, such as species of Citrus and related genera. Pupation occurs in a silken chrysalis attached to foliage or leaf litter.
- Behaviour: Adults are strong fliers and are frequently observed patrolling forest edges and clearings. They are known to engage in mud‑puddling, a behaviour where butterflies absorb minerals from moist substrates.
Related Topics
- Genus Graphium – a diverse group of swallowtail butterflies distributed across the Afrotropical, Oriental, and Australasian regions.
- Family Papilionidae – the swallowtail family, which includes some of the largest and most visually striking butterflies worldwide.
- Butterfly conservation in Asia – efforts to protect habitats and host plants vital for the survival of species such as Graphium evemon.
- Rutaceae host plants – the plant family that provides larval food resources for many Papilionidae species.