Series: Records of the Zoological Survey of India Occasional Papers Volume: 57
31 pages, 1 plate with colour photos; 1 b/w fold-out map
Language: English with French summary
From the introduction:
"The author, as a delegate from the Zoological Survey of lndia (Z.S.I.), joined the expedition at the unexplored Tons Valley of the Western Garhwal Himalayas, Uttar Pradesh, India, in the year 1972 in collaboration with the Anthropological Survey of lndia under the organisation of the Calcutta Mountaineering Club, “Dutagar".
The mission of the joint adventure was to make pioneering faunistic cum socio-cultural explorations together with an arduous attempt of scaling a virgin peak (c. 6 175 m) by the climbing members of the tearn which was composed of nineteen heads having left Calcutta on 19th September and returned on 20th October, 1972.
Presently, the systematic discussion based on a list of Lepidoptera comprising 11 species and 10 subspecies of butterflies and 6 species and only one subspecies of moths is rendered along with the redescription of one of these butterfly subspecies Colias electo fieldi Ménétriès from the lndo-Palaearctic region. The discussion is preceded by the general notes on earlier investigations of the high altitude lepidopterous fauna of the North-Western Himalayas and also accounts of climatology, biotic zonation, course and duration of trekking, field observations, biogeography, habits and cold adaptation in relation the overall lot of material collected by the author on the expedition. Finally, a French summary, acknowledgements, and references coupled with a table giving a cursory glance of field notes and a topo-sheet map, are also included."
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