Powder-faced Sprite Pseudagrion kersteni Poeiergesiggie
Small, with white pruinescent forehead. Black labrum. Eyes blackish above and light green below. Large bright blue postocular spots that are not linked with a line. Synthorax is heavily pruinescent with whitish blue stripes. The black humeral stripe on the thorax is narrow.
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Key identification features:
- Face blueish white pruinosed with black labrum. Head above is black with small bright blue postocular spots that are not linked with a line.
- Green eye with blackish grey cap.
- Thorax is distinctly striped. Black dorsal stripes on thorax with blue antihumeral stripe and a humeral (lateral) black stripe on either side of thorax. The stripes are same width. Heavily light powdery blue pruinescent. Upper legs pruinosed grey.
- Clear wings. Pterostigmas dark brown becoming black with age .
- Abdomen segment 1 and 2 have a greenish side patch becoming pruinescent whitish with age. S4 – 7 are bronze black becoming heavily pruinescent. S8-10 pruinescent whitish blue. Superior appendages has no distinct hook in side view.
- Brightly coloured like the male.
- Polychromatic ranging a brown form, blue form and green form.
- Can be buff, or bright bluish green or orange to rufous brown with dark humeral stripes.
Compared with other species:
- Pseudagrion furcigerum and the Pseudagrion kersteni are the only species with striped thorax that are pale pruinescent.
- P. furcigerum has a green labrum and the bigger. P. kersteni has a black labrum.
- P. furcigerum has a wider thoracic lateral, black stripe.
- P. kersteni has very bright blue postocular spots. P. furcigerum has pruinescent spots.
- P. kersteni has no distinct basal tooth on the superior appendages.
- One of 5 Sprites with a pruinosed forehead The others being P. draconis (Mountain Sprite), P. furcigerum (Palmiet Sprite), P. inopinatum (Balinsky's Sprite) and P. spernatum (Upland Sprite)
- P. kersteni black labrum diagnostic. P. spernatum labrum green
Distribution and habitat:
- Perch on reed blades or grass stems beside the water. The females stay away from the water in the tall grass.
Odonata Atlas of Africa - VMU Number 663460
The IUCN Red List of Threatened Species Least Concerned
African Dragonflies & Damselflies Online
A Visual Guide to the Damselflies and Dragonflies of South Africa