Scientific Name: Ceriogrion coromandelianum
Tamil Name: Oosi Thumbi
Description: A medium sized pale green damselfly with bright yellow (male) or pale green (female). It has slender wings that are closed at rest.
Distribution and status: Throughout the oriental region. Common.
Habitat: Common along the banks of ponds, rivers and canals.
Habits: Also seen far away from water.
Food: They are carnivorous throughout their life, mostly feeding on smaller insects
Life cycle: Breeds in Shallow water bodies with profuse growth of grass and other aquatic plants
Role in the environment: It is a beautiful damsel fly of India. Marsh darts are found throughout the world and in India 65 species are known and 25 species are recorded in peninsular India.