Three lined dart (Pseudagrion decorum) ഇളംനീല പൂത്താലി Rambur, 1842

Family : Coenagrionidae
Scientific name : Pseudagrion decorum  Rambur, 1842
Common name : Blue Sprite / Blue River Damsel 
Malayalam name : ഇളംനീല പൂത്താലി
Place of observation : Pariyaram, Thrissur -  Kerala 
Date of observation  : 25-12-2016

Male                                  
Abdomen  : 28-30mm   
Hind wing : 18-20mm

Female  
Abdomen  : 31mm 
Hind wing : 20 mm

Keys male
Thorax azure blue on dorsum and sides, marked with medial and humeral black stripes
Thorax green on dorsum, azure blue on sides, marked with medial and humeral black stripes
Thorax palest blue, with three fine black lines on mid-dorsal carinal ridge and a thicker black humeral stripe.

Keys female
Segment 2 with a black arrow-head-shaped marking on dorsum; segment 9 with a quadrate black dorsal spot.
(Fraser vol.1 page 286 - 288)

Male

Male