Monday, October 13, 2014

01. Acisoma Panorpoides (Rambur, 1842)

Acisoma Panorpoides (Rambur, 1842)                                                                          
Number: 01
Family: Libellulidae
Genus:  Acisoma
Species:  Acisoma Panorpoides (Rambur, 1842)
Common name(s): Trumpet tail
Habitat: Lakes and ponds  
Distribution: Dhaka, Sylhet, Chittagong 
Abundance: Not very common 
Flight season: March- October

This little but enchanting dragonfly of Libellulidae family love to stay in close proximity of water bodies. They are often sighted perching on the reeds of ponds and lakes. 


The males are small with abdomen length of 15-18 mm. The length of the hind wing are 16-21 mm. The face  is of pale blue color, eyes are blue. Legs are black. Wings are transparent and hyaline with pale yellow pterostigma. Thorax is blue with numerous black spots dorsally and laterally. Abdomen is blue, segment 1-5 are widely dilated whereas 6-10 are precipitously slim and slender. Segment 1-7 are dorsally black and laterally blue. Segment 8-10 are black. Caudal appendages are white and longer than segment 10.      


The females are of similar size and shape of male. The females are of yellowish color. The face is yellowish, eyes are green with brown cap. Legs are black, wings transparent with pale yellow wing spot.  Abdominal segment 1-5 are dilated, dorsal black line from 1-7. White lateral line at segment 6 and 7, Segment 8-10 black. Anal Appendages are white and wider in comparison to male.  

On 01 April 2015 I have sighted the oviposition of Acisoma Panorpoides at Shahjalal University of Science and Technology campus. In the first photo the male is guarding the female and the latter three the female is lying eggs. 


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