Neptis viraja

Neptis viraja

Taxobox
name = Yellowback Sailer


image_width = 250px
regnum = Animalia
phylum = Arthropoda
classis = Insecta
ordo = Lepidoptera
familia = Nymphalidae
subfamilia = Limenitidinae
genus = "Neptis"
species = "N. viraja"
binomial = "Neptis viraja"
binomial_authority =
synonyms =
The Yellowback Sailer, "Neptis viraja" is a species of nymphalid butterfly found in South Asia.

Description

Males and females Upperside black; markings orange-yellow. Fore wing : discoidal streak very broad and long, descending a little below vein 4; a short broad band sloping obliquely outwards from middle of dorsum to beyond vein 3, another short broad and somewhat clavate band sloping obliquely outwards from apical third of costa to below vein 5 ; beyond these, a subterminal slender line. Hind wing: a subbasal, transverse, very broad, somewhat paler yellow band; a postdiscal slightly narrower transverse band, not quite reaching the costa, anteriorly attenuate, curved slightly inwards; a very faint and ill-defined pale subterminal line. Underside dusky brownish black, the markings as on the upperside but much blurred. Fore wing with two subterminal slender lines, the outer not clearly defined. Hind wing: the costa at base yellowish ; discal and subterminal pale narrow bands. Antennae, head, thorax and abdomen black; beneath, the palpi, thorax and abdomen greyish white, the abdomen slightly ochraceous. Bingham, C. T. 1905. Fauna of British India. Butterflies. Vol. 1] There is very little difference between the sexes, or between the wet- and dry-seasonal broods; the latter are on the whole paler both in ground-colour and markings.Expanse 56-68 mm.

Distribution

Sikkim; Bhutan; Bengal; Orissa ; S. India; Assam; Burma and Tenasserim.

Larva

"Feeds on the blackwood tree ("Dalbergia latifolia") and also on "Dalbergia racemosa" and has similar habits to those of "N. hordonia", Stoll, which it resembles in form, but the head is bifid at the top, and the dorsal points are wanting, while the last-segment is produced into a single blunt point. The colour is dark greenish brown, the fore part, as in "N. hordonia", being much darker than the rest, but bordered with pale grey." (Davidson, Bell & Aitken)This form, as recorded by Mr. Bell, feeds, like "N. hordonia", on decayed (not fresh) leaves.

Pupa

"Like that of "N. hordonia" but rather broader and the wings more evenly expanded." (Davidson, Bell & Aitken.)

References

ee also

*Nymphalidae
*List of butterflies of India
*List of Butterflies of India (Nymphalidae)


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