Abstract
Prasad and Varshney (1995) gave a check list of Indian odonates, listing three sub orders, 17 families, 139 genera and 499 species and subspecies. However Tyagi (1997) reported 500 species and subspecies after revising Fraser’s works (1933, 1934, 1936) and, Prasad and Varshney (1995), but has mentioned that following Indian Independence, due to changes in the political boundaries, the number of odonate species and subspecies occurring in India reduced by 75. Sixteen species of odonata from rice fields of Coimbatore region, were reported by Gunathilagaraj et al. (1999). Palot and Soniya (2000) reported 14 species of odonata from Courtallam region of Tamil nadu. Earlier surveys showed that no study has been carried out so far from this region of Tamil Nadu, hence an attempt was made to study the odonata fauna of Annamalai University area. Study area Annamalai University is located in Chidambaram, Cuddalore District, a well known tourist place (11o24' N and 79o44' E). It lies at an altitude of about 5m. The area receives water from River Kollidam. Temperature varies from 26oC to 35oC. The average annual rainfall is 1200mm mostly from the Northeast monsoon during September to November.
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