Banded blue Pierrot

Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Lycaenidae
Genus:	Discolampa
Species:	D. ethion
Binomial name
*Discolampa ethion* (Westwood, 1851)
Synonyms
Castalius ethion

Discolampa ethion, the banded blue Pierrot,^[1]^[2] is a contrastingly marked butterfly found in South Asia^[3] that belongs to the blues or family Lycaenidae. The species was first described by John O. Westwood in 1851.

Description

For a key to the terms used, see Glossary of entomology terms.

The following description is taken from Charles Thomas Bingham Fauna of British India: Butterflies Volume II (1907).

Male. Upperside, forewings and hindwings: medially and obliquely crossed by a very broad pure white band that is broadly edged on its inner and outer margins by dark blue and does not extend on the forewing above vein 6, just above vein 3 it projects outwards for a short distance whence the inner margin of its dark blue edging is carried obliquely to vein 6; the extreme bases of the wings black; the costal margin of the fore and the terminal margins of both forewings and hindwings broadly black; on both wings a light iridescent blue suffusion from base outwards. Underside: snow-white. Forewings and hindwings: the following jet-black markings: Forewing: two broad more or less parallel streaks from base extended obliquely to the costa, the outer of the two apically curved and on the costa coalescent with the inner streak; costal margin very narrowly edged with black; an anterior, post-discal, outwardly oblique, short bar, slightly clavate posteriorly, extends between the costa and vein 5; opposing this there is between the dorsum and vein 3 a similar but erect and apically non-clavate bar; beyond these there is an inner and outer transverse complete subterminal series of spots followed by an anteciliary slender black line; the spots of the inner subterminal series quadrate, of the outer linear, the posterior two of the former very large; lastly, a single detached postdiscal spot in interspace 3 very close to the inner subterminal line of spots. Hindwing: a curved short basal band not extended to the costa, a spot touching it in the middle on the outer side and a discal transverse band twice widely interrupted, the middle portion shifted outwards, the lower portion with a spot on its outer margin joined to it; subterminal and terminal markings as on the forewing. Antennae, head, thorax and abdomen black; beneath: the palpi, thorax and abdomen with a median longitudinal white line.^[4]
Female: Upperside: similar to that of the male but the median white transverse band across both wings broader, extended on the forewing up to vein 7 and with no inner edging of blue or iridescent light blue irroration; the black at the bases of the wings and on the margins not so intense in shade, more of a brownish black. Underside: ground colour and markings very similar, the basal two oblique bands on the forewing generally farther from one another than in the male.^[4]^[5]
Larva. "The caterpillar, which feeds on young shoots of Ziziphus jujuba, is of the woodlouse form but flattened. Its texture though apparently smooth is, if looked at with a lens, found to be thickly covered with white hairs: its colour is greenish white with a faint green dorsal band."^[6]
Pupa. "Similar in shape to that of Castalius rosimon, Fabricius, but smaller and narrower. It is of a bright apple-green with a darkish-green line down the centre. There are some small red dots on the edges of the wing-cases."^[6]

From the Eastern Ghats
Male, upperside - museum specimens from Malaya
Female, upperside -museum specimens from Malaya
Laying egg, Chinnar Wildlife Sanctuary

Range

The butterfly occurs in Sri Lanka, South India,^[3] Sikkim to Assam, and onto Myanmar. Also in the southern Andaman Islands and Nicobar islands. In South East Asia, the butterfly is found in Cambodia, Thailand, Laos, Vietnam and Hainan, Malayan peninsula, Singapore, Sumatra, Java, Borneo, Philippines, Palawan, Nias, Sumbawa, Anambas Islands, and Sulawesi.^[1]

Cited references

^ ^a ^b Savela, Markku. "Discolampa ethion (Westwood, 1851)". Lepidoptera and Some Other Life Forms. Retrieved May 15, 2018.
^ Beccaloni, G.; Scoble, M.; Kitching, I.; Simonsen, T.; Robinson, G.; Pitkin, B.; Hine, A.; Lyal, C., eds. (2003). "Discolampa ethion". The Global Lepidoptera Names Index. Natural History Museum. Retrieved May 15, 2018.
^ ^a ^b Varshney, R. K.; Smetacek, Peter (2015). A Synoptic Catalogue of the Butterflies of India. New Delhi: Butterfly Research Centre, Bhimtal & Indinov Publishing. p. 131. doi:10.13140/RG.2.1.3966.2164. ISBN 978-81-929826-4-9.
^ ^a ^b One or more of the preceding sentences incorporates text from this source, which is in the public domain: Bingham, Charles Thomas (1907). Fauna of British India: Butterflies Volume II. pp. 426–427.
^ One or more of the preceding sentences incorporates text from this source, which is in the public domain: Swinhoe, Charles (1905–1910). Lepidoptera Indica: Volume VII. London: Lovell Reeve and Co. pp. 241–243.
^ ^a ^b One or more of the preceding sentences incorporates text from this source, which is in the public domain: Davidson, J.; Bell, T R; Aitken, E H (1896). The butterflies of the North Canara District of the Bombay Presidency. II. Journal of the Bombay Natural History Society. Vol. 10. Mumbai: Bombay Natural History Society. pp. 380, 392a.

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References

Evans, W. H. (1932). The Identification of Indian Butterflies (2nd ed.). Mumbai, India: Bombay Natural History Society.
Gay, Thomas; Kehimkar, Isaac David; Punetha, Jagdish Chandra (1992). Common Butterflies of India. Nature Guides. Bombay, India: World Wide Fund for Nature-India by Oxford University Press. ISBN 978-0195631647.
Haribal, Meena (1992). The Butterflies of Sikkim Himalaya and Their Natural History. Gangtok, Sikkim, India: Sikkim Nature Conservation Foundation.
Kunte, Krushnamegh (2000). Butterflies of Peninsular India. India, A Lifescape. Hyderabad, India: Universities Press. ISBN 978-8173713545.
Wynter-Blyth, Mark Alexander (1957). Butterflies of the Indian Region. Bombay, India: Bombay Natural History Society. ISBN 978-8170192329.

Taxon identifiers
Discolampa ethion	Wikidata: Q2278443 Wikispecies: Discolampa ethion BOLD: 749826 CoL: 36TRM EoL: 265041 GBIF: 1924323 iNaturalist: 155473 IRMNG: 10615914 LepIndex: 202804 NCBI: 1401986 Open Tree of Life: 3147858