#9 – Chestnut Angle Odontoptilum angulata Felder, 1862)
Odontoptilum angulata, the Chestnut Angle or Banded angle, is a butterfly belonging to the family Hesperiidae and is found in Asia. In India, the butterfly is distributed in South India (Tamil Nadu, Kerala) up to Maharashtra, Himachal Pradesh to Arunachal Pradesh, Meghalaya, Assam, Nagaland, Manipur and West Bengal. (Kehimkar, 2008; Sondhi et al., 2013; Varshney & Smetacek, 2015; Saji & Chandrashekharan, 2016). In Manipur, the species is represented by subspecies Odontoptilum angulata angulata Felder, 1862.
Taxonomic position
Class: Insecta
Order: Lepidoptera
Family: Hesperiidae
Subfamily: Pyrginae
Tribe: Tagiadini
Genus: Odontoptilum de Nicéville, 1890
Species: angulata (Felder, 1862)
An adult Chestnut Angle butterfly from Kongbamaru, Imphal East district near stream. (Photo by: Jatishwor Irungbam) |
Description:
Male and female vinaceous-brown, palest on the hindwing. Male, forewing dull chestnut-brown along exterior margin, with a black transverse band one-third from the base; a geminated semi-transparent spot on costa before the apex, surrounded by suffused black; a semi-transparent lunule and a small spot on the lower part of the disc, bordered without by a black band: hindwing with a transverse subbasal, an elbowed discal, and a lower submarginal purplish-white line; apex of wing with suffused black patch and lower marginal blackish pale-bordered spots. Underside brown, forewing suffused with greyish-white at the base; markings as above: hindwing greyish-white, the transverse lines less denned, marginal spots blacker, and a blackish spot near base of wing. Palpi above black. Palpi and body beneath and legs greyish-white. Female paler, marked on upper-and undersides as in male (Watson, 1891).
An adult Chestnut Angle butterfly from Litan, Ukhrul district. (Photo by: Jatishwor Irungbam) |
Food Plants:
The larvae of the butterfly feed on the plants of Ceiba sp. (Bombacaceae), Hibiscus tiliaceus, Urena lobata (Malvaceae) and Allophylus cobbe (Sapindaceae) (Kehimkar, 2008). In Singapore, the larva feeds on Commersonia bartramia, Talipariti tiliaceum (Tan, 2008).
An adult Chestnut Angle butterfly from Kongbamaru, Imphal East district. (Photo by: Jatishwor Irungbam) |
Habits:
The adults are usually found near its larval food plants, or when feeding along a muddy track or on bird droppings (Tan, 2008). In Himalaya, the adults were seen in the forested hills as well as lowland forest tracts visiting damp patches, partial to animal and bird droppings and comes to flowers too. Not very fond of open sunshine, but usually comes to bask. Flies upto 2000 m in the Himalaya and hills in the northeast India during March, May, August and October (Kehimkar, 2008).
Sightings in Manipur:
The butterfly seems to be common in most of the parts of Manipur. The butterfly has been sighted from many places during the survey. The butterfly was observed from Singda, Imphal West district; Sadu Chiru, Senapati district; Litan, Ukhrul district; Kongbamaru, Matai, Nongmaiching Reserve Forest, Imphal East district; Yaingangpokpi Lokchao Wildlife Sanctuary, Chandel district and Keibul Lamjao National Park, Bishnupur district during March, April, July, August and September.
Reference:
Kehimkar, I. (2008). The Book of Indian Butterflies. Bombay Natural History Society, 497 pp.
Saji, K. and V.K.Chandrashekharan. (2016). Odontoptilum angulata Felder, 1862 – Chestnut Angle. Kunte, K., P. Roy, S. Kalesh and U. Kodandaramaiah (eds.). Butterflies of India, v. 2.24. Indian Foundation for Butterflies. http://www.ifoundbutterflies.org/sp/483/Odontoptilum-angulata
Sondhi, S., K. Kunte, G. Agavekar, R. Lovelekar & K. Tokekar. (2013). Butterflies of the Garo Hills. Samrakshan Trust (New Delhi), Titli Trust (Dehradun) and Indian Foundation of Butterflies (Bangaluru). xvi+200 pp.
Tan, H. (2008). Life History of the Chestnut Angle (Odontoptilum angulatum angulatum). Butterflies of Singapore. http://butterflycircle.blogspot.cz/2008/03/life-history-of-chestnut-angle_09.html
Varshney, R. K. & P. Smetacek. (2015). A synoptic Catalogue of the Butterflies of India. Butterfly Research Centre, Bhimtal and Indinov Publishing, New Delhi, ii + 261 pp., 8 pl.
Watson, E. Y. (1891). Hesperiidae Indicae. Vest & Co., Madras.