It is large damselfly in size with about abdomen 42–44 millimetres (1.7–1.7 in) and hindwings about 28–29 millimetres (1.1–1.1 in). It is blue with black thoracic stripes. The male has blue and black eyes. Above the thorax is narrow blue stripes. There is azure blue on the sides of the thorax with diagonal black stripe. The under side of the thorax is greenish yellow or blue. The legs of the males are black. The abdomen is long and slender. The first and 8–10 segments on the abdomen are azure blue. The second segment of the damselfly is black with board irregular azure blue stripes on sides of abdomen. The segments from 3–7 are black with azure blue rings at the end of each segment. The segments 8 to 10 wholly azure blue, but the latter segment with the sides and apical border narrowly black.
The species is found perching on overhanging vegetation over torrential forest streams. It also breeds in forest streams.
- Kakkasery, F. (2011). "Esme longistyla". IUCN Red List of Threatened Species. IUCN. 2011: e.T175164A7116038. Retrieved 2017-03-12.
- "World Odonata List". Slater Museum of Natural History. Retrieved 2017-03-12.
- "Esme longistyla Fraser, 1931". India Biodiversity Portal. Retrieved 2017-03-12.
- C FC Lt. Fraser (1933). The Fauna of British India, including Ceylon and Burma, Odonata Vol. I. Red Lion Court, Fleet Street, London: Taylor and Francis.
- Subramanian, K. A. (2005). Dragonflies and Damselflies of Peninsular India - A Field Guide.
- "Esme longistyla Fraser, 1931". Odonata of India, v. 1.00. Indian Foundation for Butterflies. Retrieved 2017-03-12.
Data related to Esme longistyla at Wikispecies
Media related to Esme longistyla at Wikimedia Commons
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