43. Matrona nigripectus (Selys, 1879)

Matrona nigripectus (Selys, 1879)

 

Family: Calopterigidae

Genus: Matrona

Species: Matrona nigripectus (Selys, 1879)

Similar Species: Neurobasis chinensis, Vestalis gracilis

Common name: N/A

Habitat: Streams, waterfalls

Distribution: Sylhet 

Abundance: Rare 

Flight season: October-November

IUCN Red List Status: Data deficient

Worldwide distribution: Bangladesh, India, Thailand

Male

Female

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.  

38. Trithemis festiva (Rambur, 1842)

Trithemis festiva (Rambur, 1842)  

Trithemis festiva (Rambur, 1842) 

 

Number: 38

Family: Libellulidae

Genus: Trithemis  

Species: Trithemis festiva (Rambur, 1842) 

Common name: Black Marsh glider

Habitat: Streams, waterfalls

Distribution: Chittagong, Sylhet 

Abundance: Common 

Flight season: March - August

Trithemis festiva one of the four trithemis species found in Bangladesh. The species I have sighted from Chittagong and Sylhet. Commonly, the species is observed nearby streams, waterfalls and stream associated forest patches. The species is distinguished from other species by its black color, bluish abdomen and yellow markings in the abdominal segments. 

                                                             Male

The male has blue thorax, legs are black, wings are transperant, yellow patches present in the wing base. 

I have observed the male from Khagrachari near richag water falls. The male was perching in the reeds of the streams.  

As the male gets older, it become more black. The thorax turns black from blue. Also, the abdominal yellow markings abolished. 

37. Trithemis aurora (Burmeister,1839)

Trithemis aurora (Burmeister,1839) 

Trithemis aurora (Burmeister,1839) 

 

Number: 37

Family: Libellulidae

Genus: Trithemis  

Species: Trithemis aurora (Burmeister, 1839) 

Common name: Crimson Marsh glider

Habitat: Streams, waterfalls

Distribution: Chittagong 

Abundance: Common 

Flight season: March - August

Trithemis aurora is very common, in fact, it is the most abundant dragonflies in the hilly regions of Chittagong. I have sighted hundreds of them in khagrachari, near waterfalls.  

                                                                 Male

The juvenile male are orange in color, the hind wing base has dark orange patch. The veins are orange, wing transperant, pterostigma black. 

the adult are spectacular colorful insect with scintillating reddish-pink color. The thorax and head is magenta in color, wing transparent, veins reddish. Lega black, anal appendages anterior red, posterior black.   

Female

The famales are less abundant than male and stay away from waterbodies except their breeding period, The females are like juvenile male, can be distinguished by looking att their anal appendages.