Wednesday, December 26, 2018

Senegal Golden Dartlet (Ischnura senegalensis Rambur, 1842) നീല പുല്‍മാണിക്യന്‍

Common name: Senegal Golden Dartlet
Scientific name: Ischnura senegalensis  Rambur, 1842
Malayalam name:  നീല പുല്‍മാണിക്യന്‍
Family: Coenagrionidae
Place of observation: Thommana, Thumboor. Thrissur -  Kerala 
Date of observation: Various

Male                                  
Abdomen: 21-23mm   
Hind wing: 13-15mm

Female  
Abdomen: 20-24mm 
Hind wing: 14-16 mm  

Feamle

Male

Female
Female
Senegal Golden Dartlet (Ischnura senegalensis) Andromorph female & Blue sprite (Pseudagrion microcephalum) male.

Andromorph Female
Male
Female


Female

Ground skimmer (Diplacodes trivialis Fabricius, 1793) നാട്ടു നിലത്തന്‍

Common name:  Ground skimmer
Malayalam name: നാട്ടു നിലത്തന്‍
Scientific name: Diplacodes trivialis  Fabricius, 1793 
Family: Libellulidae
Place of observation: Thumboor - Kerala 
Date of observation: Various

Male:      Abdomen 19-22 mm  Hind-wing 22-23 mm
Female:  Abdomen 18-20 mm  Hind-wing 22-24 mm. 

Female

Adult male

Female obelisk posture

Juvenile Female

Adult Female
Mating

Male

Juvenile male

Female

Immature female

Adult male
Subadult male

Subadult male face to face

Sub-adult female

Sub-adult female face to face
Wings

Saturday, December 15, 2018

Myristica sapphire (Calocypha laidlawi) മേഘവര്‍ണ്ണന്‍ Fraser, 1924

Common name: Myristica sapphire
Malayalam name: മേഘവര്‍ണ്ണന്‍
Scientific name: Calocypha laidlawi  Fraser, 1924
Family: Chlorocyphidae 
Place of observation: Athirappilly, Kerala 
Date of observation: 14 - 12 - 2018 

Male                                 
Abdomen: 17-18 mm     
Hind wing: 20 mm
 
Female
Abdomen: 17 mm   
Hind wing: 24 mm 
   
It is endemic to the Western Ghats.

Male
Male
Male face
Male


Monday, December 10, 2018

Orange Marsh Dart (Ceriagrion rubiae Laidlaw, 1916) തീചതുപ്പൻ

Common name: Orange Marsh Dart
Malayalam name: തീചതുപ്പൻ
Scientific name: Ceriagrion rubiae  Laidlaw, 1916
Family: Coenagrionidae (ചതുപ്പൻമാർ)
Place of observation: Thumboor -  Kerala 
Date of observation: Various

Male                                  
Abdomen: 26-29mm   
Hind wing: 17-18mm

Female  
Abdomen: 30-31mm 
Hind wing: 20 mm 

Adult female
Adult Male
Sub-adult female
Male
Male
Juvenile male
Ovipositing
Male
Male
Sub-adult female
Male
Mating

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