Cape Thorntail. Kaapse Doringstert.
Ceratogomphus triceraticus (Balinsky, 1963)
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Key identification features:
- 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 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.
- Flies low over bushes. A strong flier that perches on the ground or low vegetation.