Common Threadtail Elattoneura glauca Gewone Draadstertjie
Common Threadtail Elattoneura glauca Gewone Draadstertjie is small sized, slender, and strongly striped in bluish grey and black.
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Key identification features:
- 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.
- 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
- 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 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.
- Reluctant to fly and is most often seen perching on grass stems. Its flight is slow and hovering, covering just a few centimeters.
Compared with other species:
- Distinguished from Elattoneura frenulata 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.
- 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.
- 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;
Description information by Michael J Samways