From the introduction:
The hill state of Himachal Pradesh covers an area of 55673 square kilometers, and is located within the North-West portion of the Himalayas. The diversified ecological niches like torrential streams, high and low land lakes, hot springs, reservoirs, thick forests coupled with highly specialised and complex environmental and physical factors like temperature, humidity and availablity of oxygen at different altitudes have greatly influenced the diversity and distribution of fauna.
This book lists 2542 species, incl. protozoa, nematodes, annelids, arthropods, insects and vertebrates.