119 039 Black Emporer female I5A3156119 038 Black Emperor male I5A3181100 518 Anax tristis Black Emperor 1 Custom

Black Emperor.     Swartkeiser  

Family Aeshnidae Leach, 1815

Also known as Magnificent Emperor

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Short description:

Very large sized, mostly black with a distinctive cream ring at the base of abdomen.

Key identification features:

Male:

  • Face all green with blackish basal triangle on top of frons.
  • Eyes green.
  • Thorax green and brown.
  • Wings slightly smoky particularly in central areas, dark brown spot beside membranule. Pterostigmas long (5 mm), reddish brown.
  • Abdomen and appendages mostly black. Segment 1 with cream dorsal patch, segment 2 with wide cream ring running all the way around. Segments 4 to 9 with small cream spots above. Segment 10 black.

Female:

  • Similar to male but stouter, shorter, appendages shorter and leaf-like, wings generally fairly smoky
Compared with other species:
  • Unmistakable due to size and markings.
  • The largest Emperor in South Africa.
Distribution and habitat:

http://vmus.adu.org.za/vm_map_afr.php?&database=odonata&grid=2&outline=1&key=0&map=4&spp=664180Found in the warm northern and eastern areas of South Africa.
Frequents pools, small dams and waterholes in open or savanna areas.
Such pools and swamps may be without water weed or fringing vegetation.

Behaviour:
  • Flies low at great speed or unhurried, drifting low and slowly across and around pools. Sometimes cruises at tree top level.
Further reading:
Websites of interest:
Warwick Tarboton
A Visual Guide to the Damselflies and Dragonflies of South Africa
Odonata Atlas of Africa VMU Number 664180
African Dragonflies & Damselflies Online
The IUCN Red List of Threatened Species Least Concern

 

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