Lethe confusa

Lethe confusa, the banded treebrown, is a species of butterfly belonging to the satyr family that is found mainly in Southeast Asia and in parts of South Asia.

Banded treebrown
Arunachal Pradesh, India
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Nymphalidae
Genus:
Lethe
Species:
L. confusa
Binomial name
Lethe confusa

It is about 50–55 mm in expanse with the upper surface of wings predominantly brown in colour. The forewing has a sub-apical white band and pale spot on the apex. Underside of the hindwing has a large ocellus or and a series of spots along the margin. It is found in bamboo forests.

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

Hindwing dentate at apex of vein 4. Upperside ground colour Vandyke brown; forewing crossed by an oblique, slightly curved, discal white band, the margins of the band more even and regular than in the female of Lethe rohria; beyond this are two obliquely placed preapical white spots. Hindwing uniform, ocelli of the underside showing through.

At Samsing in Darjeeling district of West Bengal, India

Underside uniform brown; forewings and hindwings with subbasal, subterminal and terminal sinuous lilacine-white lines; forewing with the oblique discal white bar as on the upperside, followed by a subapical lilacine patch bearing three small ocelli in vertical order, and with a very short, oblique, white bar joining it to the costa. Hindwing with a sinuous, irregular, angulated discal lilacine-white line and a strongly arched series of black ocelli speckled with white in the centre, with an inner ochraceous, intermediate brown, and outer lilacine ring. Antenna, head, thorax and abdomen dull brown; antennae ochraceous at apex.[1] Wingspan: 54–64 mm.

Museum specimens from Malaya, showing upperside

Range: the Himalayas, Shimla to Sikkim, Assam into Myanmar and extending to Java.

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References
  1. Bingham, C.T. (1905). The Fauna of British India, Including Ceylon and Burma Butterflies. 1 (1st ed.). London: Taylor and Francis, Ltd. pp. 82–83.
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