Abstract
The Red Pierrot Talicada nyseus Guérin-Méneville, 1843 is a butterfly of the semi-arid plains. Its historical distribution range includes Sri Lanka, southern India, northeastern India and Myanmar. It was recently reported from a few places in northern India far away from its known range boundaries in India. Dehradun, Kumaon Himalaya, Delhi and Kalatop are the places from where it has been reported in the recent past. Talicada nyseus nyseus appeared in the Delhi area in 2008, survived and bred for more than a year and then suddenly disappeared in the summer of 2009. The appearance of T.n. nyseus in Dehradun has been linked to the introduction of Kalanchoe ornamental plants in the newly developed residential areas. This paper examines the likely reasons for its disappearance from the Delhi area.
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