A first sighting of Tawny Coster Acraea violae Fabricius, 1775 (Lepidoptera: Nymphalidae) from the southern foothills of Bhutan

 

Tshering Nidup

 

Royal Manas National Park, Gelephu, Post box No. 189, Bhutan

tsheringnidup01@yahoo.com

 

doi: http://dx.doi.org/10.11609/JoTT.o4194.7484-6 | ZooBank: urn:lsid:zoobank.org:pub:ADBBBA22-FFEB-409D-B24E-9C88C3B04ADA

 

Editor: B.A. Daniel, Zoo Outreach Organization, Coimbatore, India. Date of publication: 26 June 2015 (online & print)

 

Manuscript details: Ms # o4194 | Received 02 December 2014 | Final received 02 June 2015 | Finally accepted 05 June 2015

 

Citation: Nidup, T. (2015). A first sighting of Tawny Coster Acraea violae Fabricius, 1775 (Lepidoptera: Nymphalidae) from the southern foothills of Bhutan. Journal of Threatened Taxa 7(8): 7484–7486; http://dx.doi.org/10.11609/JoTT.o4194.7484-6

 

Copyright: © Nidup 2015. Creative Commons Attribution 4.0 International License. JoTT allows unrestricted use of this article in any medium, reproduction and distribution by providing adequate credit to the authors and the source of publication.

 

Funding: Self funded.

 

Competing interests: The author declares no competing interests.

 

Acknowledgements: I sincerely thank Mr. Phurba Lhendup, WWF Bhutan program for encouraging me to report this species. I also truly thank my small family for encouraging me, giving me free time and sometimes accompanying me for butterfly explorations during weekends.

 

 

 

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Butterflies have been one of the most studied group of insects and have received reasonable scientific attention throughout the world since the 18th century (Al Haidar 2014). Around 19,238 species (Heppner 1998) of butterflies have been estimated around the world of which 800900 species are estimated from Bhutan (van der Poel & Wangchuk 2007). The butterfly diversity in Bhutan is fairly well documented. Several naturalists and researchers from pockets of Bhutan have studied and published guide books and papers (e.g., van der Poel & Wangchuk 2007; Singh 2012; Wangdi et al. 2012; Wangdi & Sherab 2012 a,b; Singh & Chib 2014, Nidup et al. 2014; Nidup 2015); however, till date there is no compressive checklist of butterflies for Bhutan.

The Nymphalidae butterfly Acraea violae Fabricius (1775) was encountered on 12 August 2014 along the southern foothills of Bhutan at a place called Jigmeling under Sarpang District at 26054’N & 90022’E, 434m (Fig. 1). My four year old son and I saw this species when we were out on our regular butterfly exploration on a bright sunny day at around 10:00hr (GMT+ 06:00) on a flower of Bidens pilosa (Images 1,2). I managed to take a few photographs with my camera Cannon 60D with 18-270 mm lens. Till date this species has not been reported from Bhutan. Even the recent study carried out by Nidup et al. (2014) and Nidup (2015) in the southern foothills of Bhutan in Royal Manas National Park do not mention the presence of this species. Kehimkar (2008) has stated in his book “The Book of Indian Butterflies” that this species is common in the region but this contradicts Saji et al. (2014) who indicate that this species is rarely found in northern and northeastern as compared to southern India. Further, Kehimkar (2008) does not mention the time, place or how he encountered this species in Bhutan. Kanwar (2014) has stated that the Tawny Coster is a rare species in Chandigarh. Apart from Bhutan this species is distributed in India, Pakistan, Nepal, Bangladesh and Sri Lanka (Kehimkar 2008).

 

 

 

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This species is found flying in shrub land and edges of the forest up to 1500m above the sea level in the Himalaya (Haribal 1992; Kehimkar 2008). The adults visit flowers for nectar and are sluggish and gentle on their wings which measure about 5364 mm. This species is locally common (Kehimkar 2008) in west and south Sikkim (Haribal 1992). The species is on the wing throughout the year in forest, open country, scrubby grassland and flower gardens. This is a colony forming species and even in marginal habitats it is uncommon to see less than half a dozen butterflies (Hoskins 2015) but in this encounter I saw a single butterfly hovering from flower to flower of Bidens pilosa. Larva feeds on Aporosa lindleyana, Passiflora edulis, P. foetida, and P. subpeltata (Haribal 1992; Kehimkar 2008)

It was observed that there was some degree of cannibalism within the species such as a larva being observed feeding on a pupa (Haribal 1992). The adult butterfly is unpleasant to predators. The female develops a hard pouch at the abdominal tip after mating to prevent further mating (Kehimkar 2008).

Discussion: Despite being a part of Nymphalidae, the richest family having around 6000 species, Acraea violae is rarely seen along the southern foothills of Bhutan and the presence of this species was unknown until date. This species is also found in the Indian states of Andhra Pradesh, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Tamil Nadu, Telangana, and Uttarakhand but rarely towards the north or the northeast of India (Saji et al. 2014). It was also not reported from along the Indo-Bhutan border. The sighting along the southern foothills of Bhutan adds a new species to the list of butterflies of Bhutan. However, further study is required to understand the distribution and habitat of this species.

 

References

 

Al Haidar, I.K., M. Rahman, M.F. Ahsan, A. Islam, J.N. Tania, P.R. Banick & S. Ahmed (2014). Records of three new butterfly species from the Chittagong University Campus of Chittagong in Bangladesh. Entomology and Zoology Studies 2 (5): 178181.

Haribal, M. (1992). The Butterflies of Skkim Himalaya and Their Natural History, Sikkim. Nature conservation Foundation, Gangtok, Sikkim, 217pp.

Heppner, J. (1998). Classification of Lepidoptera. Part I Introduction. Holarctic Lepidoptera 5: 148

Hoskins, A. (2015). Indian Subcontinent - Tawny Coster Acraea violae, Fabricius- 1793, In: Butterflies of the World. New Holland Publishers Pvt. Ltd., London, 312pp.

Kanwar, K. (2014). Tawny Coster butterfly spotted in Chandigarh “the pioneer”, PNS, Chandigarh. < www.dailypioneer.com/state-editions/chandigarh/tawny> Accessed 30 May 2015.

Kehimkar, I. (2008). The Book of Indian Butterflies. Bombay Natural History Society and Oxford University Press, 497pp.

Nidup, T., T. Dorji & U. Tshering (2014). Taxon diversity of butterflies in different habitat types in Royal Manas National Park, Gelephu: Bhutan. Journal of Entomology and Zoology Studies 2(6): 292196.

Nidup, T. (2015). Annotated checklist of butterfly from Royal Manas National Park, Bhutan. Spring 5: 19.

Saji, K.Y., Gurjar, P. Kale, T.P. Alaganantham, & G. Jaikumar (2014). Acraea violae- Fabricius, 1775. Tawny Coster. In: Kunte, K., S. Kalesh & U. Kodandaramaiah (eds.). Butterflies of India, v. 2.10. Indian Foundation for Butterflies. http://www.ifoundbutterflies.org/sp/573/Acraea-violae. Accessed 30 June 2015.

Singh, A.P. (2012). Lowland forest butterflies of the Sankosh River catchment, Bhutan. Journal of Threatened Taxa 4(12): 3085–3102; http://dx.doi.org/10.11609/JoTT.o2625.3085-102

Singh, I.J. & M. Chib (2014). A preliminary checklist of Butterflies (Lepidopteria: Rhophalocera) of Mendrelgang, Tsirang, Bhutan. Journal of Threatened Taxa 6(5): 5755–5768; http://dx.doi.org/10.11609/JoTT.o3632.5755-68

van der Poel, P. & T. Wangchuk (2007). Butterflies of Bhutan. Mountain, Hills and Valleys Between 800m and 3000m. Royal Society for Protection of Nature. Thimphu, Bhutan, 71pp.

Wangdi, S., K. Wangdi, Sherub, R. Wangdi, S. Drukpa, M. Harada, T. Aoki, S. Amaguchi, M. Saito, Y.Igarashi, Y. Watanabe & M. Yago (2012). Butterflies of Tashiyangtse Valley, Eastern Bhutan (part 1).Butterflies (Teinopalpus). The Butterfly Society of Japan (Teinopalpus) 62: 16–28.

Wangdi, K. & Shrub (2012a). Nature Guide Series - Nymphalids (Brush-footed) Butterflies of Bhutan. Ugyen Wangchuk Institute for Conservation and Environment, Bumthang, Bhutan, 130pp.

Wangdi, K. & Shrub (2012b). Field Guide for Swallowtails of Bhutan. Ugyen Wangchuk Institute for Conservation and Environment, Bumthang, Bhutan, 77pp.