Common Threadtail , Elattoneura glauca, Gewone Draadstertjie

Elattoneura glauca. Common Threadtail. Male
Female
Pair Nwanedi LP RSA Dec 2018
Short description:

Common Threadtail Elattoneura glauca Gewone Draadstertjie is small sized, slender, and strongly striped in bluish grey and black.

Family Platycnemididae     (Yakobson & Bianchi, 1905)

More Images:
Click on all images to enlarge or view more
Key identification features:

Male:

  • Face is dark grey with the frons strongly pruinose with maturity. The labrum is blackish. Head is greyish black from above. Neck is a pruinescent greyish blue.
  • Eyes are blackish brown above, turning turquoise midway, green below; dark ring present midway. Largely blue in life, rather than dark
  • Thorax is distinctly pruinescent greyish blue from above with a distinctive black stripe on the shoulder. Area between the wing bases with small light brown blotches.Elattoneura glauca Common Threadtail Kloofzight
  • Wings are clear. Pterostigmas dark are brown with fine light brown borders.
  • Abdomen dark bluish black with fine indistinct buff rings. Segments 1 and 2 pruinescent above, segments 8 to 10 heavily pruinescent greyish white.
  • Young males similar to females bite brown with white markings on s 7-10

Female:

  • Slightly larger and more robust than male,
  • Thorax patterning  brown and dark brown with creamy brown stripes Dark version very dark almost blackish brown with creamy white strips
  • Abdomen with distinct white, browning slightly with age,  markings on s 7-10.
Habitat:
  • Habitat is Mostly streams, but also rivers, shaded by gallery forest, but sometimes in open landscapes. Often with emergent vegetation and a gravelly, sandy and/or soft (like muddy) bottom.
    From 0 to 2400 m above sea level, but mostly below 1800.
Behaviour:
  • Reluctant to fly and is most often seen perching on grass stems. flight is slow and hovering, covering just a few centimeters.
Compared with other species:
  • Distinguished from Elattoneura frenulata Elattoneura frenulata Sooty Threadtail Male Kogelberg Western Cape 18 11 2015 by being bluish grey and not black and is rare in southwestern WCP.
  • It is smaller and much more slender than any species and the dorsal, wide, greyish blue thoracic stripes give it a 'greybacked' appearance.
  • Striped Pseudagrion species have wider black stripes than blue when viewed from above.
  • Appendages distinctive.
Related Species
Distribution:
Distribution Map June 2020 MapDistribution Map
South Africa
map of south africa maxPolitical Map
South Africa
South Africa Physical MapSouth Africa
Physical Map
Elattoneura glauca Common Threadtail Distribution Map Africa Apr 2023Africa
Distribution Map
Africa PoliticalAfrica
Political Map
Arica PhysicalAfrica
Physical Map

 

 

South Africa:

  • Common Threadtail Elattoneura glauca Gewone Draadstertjie is abundant and widespread across much of the country,
  • There are few records from the Karroo and it is localised and rare on the coast and in the Lowveld. 

Africa:

  • Angola; Botswana; Congo-Brazzaville; Democratic Republic of the Congo; Equatorial Guinea; Kenya; Lesotho; Malawi; Mozambique; Namibia; Republic of South Africa; Swaziland; Tanzania; Uganda; Zambia; Zimbabwe;
Further reading:

Websites

IUCNThe IUCN Red List of Threatened SpeciesIUCN IUCN Leasrt ConcernIUCN Leasrt Concern
VM OdonataMAP logo 108x90 RGB trOdonata Atlas of Africa VMU Number 661810
D D IDA Visual Guide to the Damselflies and Dragonflies of South Africa

Description information by Michael J Samways

}