Papilio nephelus

Papilio nephelus

Taxobox
name = Yellow Helen
status =


image_caption = at Jayanti in Buxa Tiger Reserve in Jalpaiguri district of West Bengal, India.
regnum = Animalia
phylum = Arthropoda
classis = Insecta
ordo = Lepidoptera
familia = Papilionidae
genus = "Papilio"
species = "P. nephelus"
binomial = "Papilio nephelus"
binomial_authority = Boisduval, 1836
synonyms = "Princeps nephelus" "Papilio chaon" Westwood, 1845 [Arcana Ent. 2( ):97, pl.72, fig.1 Type locality: Assam]
The Yellow Helen ("Papilio nephelus") is a species of Swallowtail butterfly found in Asia.

Description

:"See glossary for terms used"Superficially closely resembles "P. helenus". The differences are, however, both of structure and of colour. Male Fore wing upperside: entirely without the thick coating of short hairs on the outer half. Upperside: black with a sprinkling of yellowish-brown scales on the tore wing, that form four longitudinal streaks on the cell and internervular streaks on the outer half. Hind wing: the upper discal white patch larger, formed of elongate broad streaks in interspaces 4 to 7 (not 5 to 7): no tornal nor subterminal markings. Underside ground-colour duller brownish black; fore wing with the diffuse scaling so disposed as to form grey cellular and internervular streaks, the streaks in interspaces 1 a and 1 generally white, not diffuse. Hind wing: basal area sprinkled with yellow scales that form three longitudinal slender lines in the cell: the upper white discal patch as on the upperside, but the elongate white markings that compose it well divided by the black veins; below the discal white patch there is a small series of white spots in interspaces 1 to 3, the spot in 1 generally, in 2 very often, tinged with ochraceous yellow; a subterminal complete series of ochraceous-yellow lunules followed by admarginal narrow white spots. Antennae, head, thorax and abdomen black; beneath: a line of white on the palpi, the thorax with some linear white markings.

Female similar. Upperside ground-colour browner; fore wing: cellular and internervular streaks more prominent; in many specimens an obscure diffuse whitish subcostal shading just beyond apex of coll. Underside paler. Fore wing with the cellular and internervular streaks and subcostal postcellular whitish patch more prominent; the posterior three internervular short streaks on the outer half of the wing white, not diffuse; in a few specimens there is a series of more or less conspicuous admarginal white spots, one in the middle of each interspace. Hind wing markings similar to those in the male, but larger and more prominent. Antennae, head, thorax and abdomen as in the male, but the abdomen beneath with lateral white markings.Bingham, C. T. 1907. Fauna of British India. Butterflies. Volume 2]

Range

Nepal; Sikkim; Assam ; Burma; Tenasserim; extending to Siam and China.

References

Other reading

* Collins, N.M. & Morris, M.G. (1985) Threatened Swallowtail Butterflies of the World. IUCN. ISBN 2-88032-603-6
* Evans, W.H. (1932) The Identification of Indian Butterflies. (2nd Ed), Bombay Natural History Society, Mumbai, India
* Wynter-Blyth, M.A. (1957) Butterflies of the Indian Region, Bombay Natural History Society, Mumbai, India.

ee also

*Papilionidae
*List of butterflies of India
*List of butterflies of India (Papilionidae)

External links

* http://yutaka.it-n.jp/pap/10320010.html

Gallery


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