42. Agriocnemis clauseni (Fraser, 1922)

Agriocnemis clauseni (Fraser, 1922)

Family: Coenagrionidae

Genus: Agriocnemis

Species: Agriocnemis clauseni (Fraser, 1922)

Similar Species: Agriocnemis kalinga, Agriocnemis femina, Agriocnemis pygmaea

Common name: N/A

Habitat: Stream associated forest patches 

Distribution: Sylhet

Abundance: Rare

Flight Season: August

IUCN Red List Status: Least concern

Worldwide distribution:  Bangladesh, Bhutan, India, Myanmar, Nepal, Thailand

The most uncommon species among the Agriocnemis of Bangladesh. I have sighted the species from the north eastern forests. The male is bright blue in color.  

The juvenile male can be recognized by their greenish antehumeral stripe.  

The females are reddish, found close to male. 

the juvenile female is more orange in color 

41. Diplacodes nebulosa (Fabricius, 1793)

 Diplacodes nebulosa (Fabricius, 1793) 

Family: Libellulidae

Genus: Diplacodes  

Species: Diplacodes nebulosa (Fabricius, 1793)  

Similar Species: Diplacodes trivialis

Common name: Black-tipped Ground skimmer

Habitat: Marsh, Ponds

Distribution: Dhaka, Sylhet

Abundance: Uncommon 

Flight season: October- November

IUCN Red List Status: Least concern

Worldwide distribution: Australia, Bangladesh, Cambodia, China, Hong Kong, India, Indonesia , Lao People's Democratic Republic; Malaysia, Myanmar, Nepal, Papua New Guinea, Philippines, Singapore, Sri Lanka, Thailand, Viet Nam. 

Currently, two Diplacodes species is known from Bangladesh. Unlike Diplacodes trivialis, Diplacodes nebulosa is not very common. The two species are similar however can be easily distinguish by the black wing tip of D. nebulosa male. 

  

40. Pantana flavescens (Fabricius, 1798)

 Pantana flavescens (Fabricius, 1798) 

Family: Libellulidae

Genus: Pantana  

Species: Pantana flavescens (Fabricius, 1798)  

Similar Species: None

Common name: Wandering glider, Globe skimmer

Habitat: Marsh, open fields, grasslands

Distribution: All over the country  

Abundance: Common 

Flight season: October- January

IUCN Red List Status: Least concern

Worldwide distribution: distributed in many countries of Asia, Africa, Europe, Australia, North america and South America

Pantana flavescens is a migratory dragonfly found during the winter season in Bangladesh. They are usually observed flying above the open fields and grasslands. 

39. Gynacantha khasiaca (McLachlan, 1896)

Gynacantha khasiaca (McLachlan, 1896) 

Family: Aeshnidae

Genus: Gynacantha

Species: Gynacantha khasiaca (McLachlan, 1896)

Similar Species: None

Common name: N/A

Habitat: Forests

Distribution: Sylhet 

Abundance: Rare

Flight season: August

IUCN Red List Status: Data deficient

Worldwide distribution: India, Nepal, Myanmar

Gynacantha khasiaca is one the most beautiful dragonfly found in Bangladesh. This is one of the three Gynacantha species found in Bangladesh. The extremely rare species was first time recorded from Bangladesh in 2014.