Losaria neptunus
L. n. doris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Papilionidae
Genus:	Losaria
Species:	L. neptunus
Binomial name
Losaria neptunus (Guérin-Méneville, 1840)
Synonyms
Papilio neptunus Guérin-Méneville, 1840 Atrophaneura neptunus Rothschild, 1895 Parides neptunus Balignina neptunus Page & Treadaway, 2003 Papilio thetys Guenée, 1878 Papilio thetys Guenée, 1878 Papilio neptunus var. fehri Honrath, 1892 Papilio neptunus fehri Rothschild, 1895 Pachliopta neptunus dacasini Schröder, 1976 Balignina neptunus dacasini Page & Treadaway, 2003 Balignina neptunus matbai Page & Treadaway, 2003

Losaria neptunus, the yellow-bodied club-tail or yellow club-tail, is a species of butterfly from the family Papilionidae that is found in Sumatra, south Burma, north Borneo and the Philippines^[1]

The wingspan is 100–120 mm (3.9–4.7 in). The wings are dark brown or black. The lower half of the abdomen is yellow. It has white markings on the forewings and a red patch on each hindwing.^[2]

The larvae feed on Thottea and Aristolochia species.

• L. n. neptunus (southern Burma to Peninsular Malaya, Langkawi)
• L. n. fehri (Honrath, 1892) (Nias)
• L. n. sumatra Hagen (northern Sumatra)
• L. n. padanganus Rothschild (western and southern Sumatra)
• L. n. doris Rothschild (northern Borneo)
• L. n. dacasini (Schröder, 1976) (Philippines: Palawan)
• L. n. matbai Schröder & Treadaway, 1990 (Philippines: Tawitawi)

Media related to Atrophaneura neptunus at Wikimedia Commons