Indian Statistics
India harbors about 11.1% of the global earthworm diversity particularly in the biodiversity ‘hot spots’ of the Western Ghats and Eastern Himalayas. The Indian earthworm fauna is predominantly composed of native species, which constitute about 89% of total earthworm diversity in the country (Julka and Paliwal 2005). Julka et al. (2009) have reported the presence of 418 species of earthworms in India, majority of which are endogeic or geophagous. Though most of the Indian forms have specific preference for natural habitats, a few are exotic and ubiquitous.  Indian species have successfully colonized different agro ecosystems. Julka (2001) has divided five earthworm diversity zones in India, viz., mega diversity, high diversity, medium diversity, low diversity and poor diversity zones. Around 45 exotic peregrine forms have also been introduced into India (Julka 1988). These mostly occur in disturbed habitats created by deforestation and intensive cultivation. Successful colonization of almost all agro-climatic zones in India by the exotic species is mainly due to their inherent ability to withstand disturbance and interference (Julka 1988).