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Female
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Male
Male
- Suborder:
- Anisoptera
- Family:
- Libellulidae
- Genus:
- Brachydiplax
- Species:
- Brachydiplax farinosa (Kruger, 1902)
- Common name:
- Black-Tailed Dasher
- Global IUCN status:
- Least Concern
- Eco-system:
- Terrestrial, Freshwater
- Abundance:
- Common
- Flight Seasons:
- February - November
- Local Distribution:
- Rajshahi, Dhaka, Sylhet, Chittagong, Khulna, Barisal
- Global Distribution:
- Bangladesh, Brunei Darussalam, China, India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam
- Identification Key:
- Dorsum of thorax thinly or not pruinosed; sides of thorax dark metallic or yellow marked with black; bases of wings tin-colored or but very palely so. 8 to 9 antenodal nervures in fore-wing; male sexual organs barely visible in profile.
- Distinguishing Feature:
- This species is easily distinguished from B. sobrina by its inconspicuous genitalia and by the general Black metallic colour of the thorax.
- Abdomen Size:
- Male: 18.5 mm
Female: 17.5 mm - Wing Size:
- Male: 23.5 mm
Female: 24 mm - Wing Spot:
- Male: Greyish yellow
Female: Greyish yellow - Eye Colour:
- Male: Blackish brown
Female: Blackish brown - Male Description:
- The male is very similar to B. sobrina and extremely difficult to distinguish. The head is brownish black, thorax is bluish black. Abdominal segment 1 is blackish, segments 2-7 are white, 8-10 are black, anal appendages are black. In the field and by photograph the species can be distinguished by the 8-9 antenodal veins which is 7 in case of B. sobrina.
- COI Gene Sequence: Not available
- CO1 Protein sequence: Not available