Atrophaneura neptunus, commonly known as the Yellow-bodied Club-tail or Yellow Club-tail is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of butterfly

Butterfly

A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

 from the Papilionidae family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 that is found in Sumatra

Sumatra

Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

, South Burma, North Borneo

Borneo

Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

 and the Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

The wingspan is 100–120 mm. 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.

The larvae feed on Thottea

Thottea

Thottea is a genus of flowering plants in the pipevine family, Aristolochiaceae.-Selected species:*Thottea grandiflora Rottb.*Thottea siliquosa Ding Hou-External links:...

and Aristolochia

Aristolochia

Aristolochia is a large plant genus with over 500 species. Collectively known as birthworts, pipevines or Dutchman's pipes, they are the namesake of the family . They are widespread and occur in the most diverse climates. Some species, like A. utriformis and A...

species.

Subspecies

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