A migration of Pantala flavescens (Fabr.) in South India (Anisoptera: Libellulidae)
Notulae odonatologicae , Volume 2 - Issue 9 p. 154- 154
From October 5, 1986 onwards the common Globe Skimmer, an almost universally distributed migratory dragonfly, became increasingly common at Kotagiri, 1900 m in the Nilgiri Mountains of Tamil Nadu in South India. Hundreds of individuals were hawking for insects everywhere. On 18-X a dense migration started towards the southeast, and it was possible to establish that they covered a front of more than five kilometres. More than one per minute per metre passed for more than four hours of observations, which would imply that on that single day the total number of migrants was more than one million. I left Kotagiri for good that afternoon, and it seems perfectly likely that the migration persisted and that its front may have been wider than the one I observed.
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