Friday, November 30, 2018

Blue Sprite / Blue River Damsel (Pseudagrion microcephalum Rambur, 1842) നാട്ടുപൂത്താലി

Common name: Blue Sprite / Blue River Damsel 
Malayalam name: നാട്ടുപൂത്താലി
Scientific name: Pseudagrion microcephalum  Rambur, 1842
Family: Coenagrionidae
Place of observation: Thumboor, Thommana -  Kerala 
Date of observation: Various

Male                                  
Abdomen: 27mm   
Hind wing: 17mm

Female  
Abdomen: 29mm 
Hind wing: 20 mm


Keys male
Dorsal marking on segment 2 goblet-shaped
Superior anal appendages with 6, 2, or 3 small spines on the inner border.

Keys female
Head and the upper surface of eyes with a large amount of bright orange; 
Segment 9 with a bifid black marking.
(Fraser vol.1 page 278, 279)

Female

Male
Tandem
Male transferring sperms to the secondary genitalia
Mating
Mating
Ovipositing

Ovipositing

Male
Female

Pseudagrion microcephalum and Ceriagrion cerinorubellum ovipositing pairs

Male

Male

Comparison of the female's Head & Thorax

Comparison of the male's Head & Thorax

Comparison of the male's Anal appendages

Comparison of the males

Comparison of the females


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