108 507 Ceratogomphus triceraticus Cape Thorntail Male Kogelberg Western Cape 18 11 2015 108 506 Ceratogomphus triceraticus Cape Thorntail Male Kogelberg Western Cape 18 11 2015

Cape Thorntail.     Kaapse Doringstert.

Ceratogomphus triceraticus (Balinsky, 1963)
More Images
Images
108 507 Ceratogomphus triceraticus Cape Thorntail Male Kogelberg Western Cape 18 11 2015
 Click for more
Short description:

Cape Thorntail, Ceratogomphus triceraticus, Genus Ceratogomphus, Family Gomphidae, large sized, darkbrown, with some deep yellow markings andl arge foliations on segment 8.

Key identification features:

Male:

  • Face dull yellow.Face dull yellow. Labrum yellow with central black line thatjoins two black spots. Anteclypeus greyish yellow. ostclypeus yellow, bordered above andbelow with two brownish black lines that runacross and touch in the middle. Frons brownishyellow. Head black above, back of head brownishyellow.
  • Eyes dark grey.
  • Thorax with narrowdeep yellow and wide brown stripes with pruinescencealong sutures.
  • Wings faintly greenish.Pterostigmas of medium length (4 mm), black.
  • Abdomen alternately deep brown and deep yellow. Large foliations on segment 8 dull yellowin centre with wide blackish brown margin andsome pruinescence. Segment 10 with large, robust, forward-pointing dorsal spine with darkbrown tip. Superior appendages with wide, robust,outward-pointing spines.

Female:

  • Female similar but brighter. Foliations on segment 8 small.
Compared with other species:
  • Larger size and overall darker than Ceratogomphus pictus (Common Thorntail) which is more yellow.
  • Black markings on thorax, abdomen and foliation is considerably darker than C. pictus.
Distribution and habitat:
  • Endemic to South Africa and restricted to the Southern Cape.
  • Frequents wide and shallow streams with bushes and exposed rocks.
Behaviour:
  • Flies low over bushes. A strong flier that perches on the ground or low vegetation.
Further reading:
http://vmus.adu.org.za/vm_map_afr.php?&database=odonata&grid=2&outline=1&key=0&map=4&spp=664560 Books
A Guide to Dragonflies and Damselflies of South Africa Ed 1   p. 120. Ed 2. P. 130

Dragonflies and Damselflies of South Africa   p. 132
Dragonfly Biotic Indes   p. 123

Websites
Tarboton.
A Visual Guide to the Damselflies and Dragonflies of South Africa
Africabn Dragonflies & Damselflies Online
The IUCN Red List of Threatened Species
Odonata Atlas of Africa VMU Number 664560
Other Information:
Size Comparison Diagram: Dragonflies and Damselflies
Morphology of a Dragonfly  and Damselfly
Map of South Africa

X

Right Click

Copyrighted material - contact us if you want to buy a photo