108 531 Pinheyschna subpupillata Stream Hawker Male Kogelberg WC Nov 2015 107 509 Pinhheyschna subpupillata Stream Hawker Female Napier WCP RSA Oct 2016r 10 108 550 Pinheyschna subpupillata Stream Hawker Male Kogelberg Western Cape 19 10 2016

Stream Hawker.     Spruitjieventer.

Also called Southern Stream Hawker.

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  • Image gallery for Stream Hawker
  • Close-up for identification assistance
    Female. 
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Short description:

Pinheyschna subpupillata, Stream Hawker, Genus Pinheyschna, Family Aeshnidae, large sized, green and brown striped, with a spotted abdomen.

Key identification features:
  • Face deep yellow to greenish yellow.
  • Eyes are bright green that tends to be olive above.
  • Frons is distinctive above with central black spot surrounded by yellow ring, again surrounded by a black ring. The stem of black mark on frons is round and surrounded by pale area shaped like bull’s-eye, on greenish/yellow face.
  • Thorax dull dark brown, sides with two large diagonal greenish yellow lines.
  • Wings slightly smoky with brown veins and some yellow crossveins. Pterostigmas of medium length (3.5 mm), reddish brown. Membranule (inside area of hindwing) mostly white with grey patch on outer hind quarter
  • Abdomen has regular pattern of green and brown patches. No blue saddle as in other Hawker Sp.. Underside of segment 2 with pair of backward-pointing hornlike lobes, can even be seen in flight.
Compared with other species:
  • Similar to Zosteraeschna minuscula (Friendly Hawker) which has an anchor, not a bulls-eye mark on the forehead.
  • Does not have any blue as in other Zosteraeschnsa sp.
  • Simmilar to Pinheyschna rileyi, Northern Stream  Hawker (Zimbabwe) (also called the  Bullseye Hawker) Differs by ranging from Zimbabwe to South Africa.  Relatively smaller size, Hw 39-41 mm Space between lateral stripes with pale marking near Fw base Costa pale yellow rather than brown, and many cross-veins near base yellow, including those in triangles, contrasting with dark surrounding veins (rather than all venation being uniformly dark).  [Adapted from Dijkstra & Clausnitzer 2014]
Distribution and habitat:
  • This species is endemic to southern Africa. It occurs in South Africa, Zimbabwe and Mozambique. In South Africa from the Western Cape along the costal belt to the north eastern interior, Mpumalanga
  • Favours fast flowing streams in hilly terrain, in open landscapes, open areas in forest or shaded by gallery forest. Streams usally with rocks, often dead trunks or branches, and probably overhanging branches. From 0 to 1900 m above sea level.
Behaviour:

Flies rapidly over flowing streams. Cruises back and forth.

Further reading:

Books:
A Guide to Dragonflies and Damselflies of South Africa...p. 116
Dragonflies and Damselflies of South Africa...p. 114
Dragonfly Biotic Index...p. 103
Websites:
Warwick Tarboton.
A Visual Guide to the Damselflies and Dragonflies of South Africa
The IUCN Red List of Threatened Species
Odonata Atlas of Africa VMU Number 664470
African Dragonflies & Dragonflies Online
Other Information:
Size Comparison Diagram Dragonflies, Damselflies
Morphology of a Dragonfly,  Damselfly
Map of South Africa
 
 
 
 
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