The Bamboo Treebrown Lethe europa is a species of Satyrinae

Satyrinae

Satyrinae, the satyrines or satyrids, commonly known as the Browns, is a subfamily of the Nymphalidae . They were formerly considered a distinct family, Satyridae. This group contains nearly half of the known diversity of brush-footed butterflies...

 butterfly found in Asia.

Description

Inner third of hind wing covered with long brown hairs.

Male upperside rich dark brown. Fore wing with the oblique short white discal fascia on the underside showing through, two obscure black spots or ocelli, followed by two prominent white spots, the upper one double, some black markings margined outwardly with pale dusky brown along terminal margins of both fore and hind wing and an obscure subterminal pale line on the latter.
Underside very dark blackish brown; the wings crossed subbasally by a slender lilacine-white straight line, followed on fore wing by an oblique short white discal fascia, and on both fore and hind wing by a post-discal series of large black ocelli and a terminal, somewhat ochraceous, narrow band bordered on the inner side by a more or less silvery purple line. The series on both fore and hind wing-margined inwardly and outwardly by silvery purple lunular lines, on the fore wing curved inwards, on the hind wing curved outwards; the ocelli on fore wing confluent, black, non-pupilled, on the hind wing black with disintegrate silvery-speckled irregular centres on a brown ground.
Female similar: fore wing on upperside with an oblique broad white discal band, hind wing with a postdiscal incomplete series of black spots. Underside similar to the underside in the male, markings and ocelli larger.

Lethe europa tamuna de Nicéville is a race described originally from Little Nicobar

Little Nicobar

Little Nicobar is one of the Nicobar Islands, India. Its area is 157 km². There are a few smaller islands of Little Nicobar's shores: Menchal, Pulomilo, Treis/Albatei, Trak/Mafuya and Meroe. The island of Katchal is located about 70 km to the north.The 2004 Indian Ocean earthquake and tsunami...

. Michael Lloyd Ferrar

Michael Lloyd Ferrar

Lt. Col. Michael Lloyd Ferrar, CSI, CIE, OBE was a British commissioner of the Penal Settlement at Port Blair on Andaman Islands and Nicobar Islands....

 (1948) reported seeing it from the Great Nicobar

Great Nicobar

Great Nicobar is the largest of the Nicobar Islands of India, north of Sumatra. Indira Point, its southernmost tip, is also the southernmost point of India. The island of Sumatra is located to the south of Great Nicobar...

 island in 1931. It has been rediscovered in recent times in the Campbell Bay area of Great Nicobar. Both adults and immatures were found along roadsides in disturbed forests. They were seen to breed on the bamboo Dinochloa andamanica Kurz. Eggs were laid on leaves deep inside the clump and never on the fringes.

Life history

Larva, Green, paler beneath, fusiform; head with a single short erect horn; body attenuated suddenly from the 11th segment.

Pupa. Uniform pale green, stout, smooth, quite regular, except the head-case which is semidetached, broad and angular, with two sharp points in front (after Davidson & Aitken

Edward Hamilton Aitken

Edward Hamilton Aitken was a civil servant in India, better known for his humorist writings on natural history in India and as a founding member of the Bombay Natural History Society...

).

External links

• FLMNH Excellent photographs of male and female, from Sulawesi
  Sulawesi
  Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...
  
  (authority determined).