Subject: Insect identification South Africa
Location: wellington, western cape, South Africa
January 30, 2015 12:16 am
Hi there, we found this insect on the farm that we live on in the western cape. It appears that he kills spiders larger than himself and then carries them away to eat. He has very long legs. Please could you help identify him?
This is a rather distant view is of a Spider Wasp in the family Pompilidae, and there are several Australian relatives that look very similar. We believe this may be a member of the genus Hemipepsis based on this image on iSpot. In North America, the genus members are called Tarantula Hawks. Your interpretation of the natural drama you witnessed is not correct. The female Tarantula Hawk does the hunting. Both she and her mate visit blossoms for nectar, and the high sugar content gives them energy to mate and provide for their young. All provisions are the responsibility of the female, who hunts large spiders, including Trapdoor Spiders and Wolf Spiders as well as Huntsman Spiders and Tarantulas. The Spider Wasp stings and paralyzes the spider, and then drags it back to the burrow where a single egg is laid on the spider. Since the spider is paralyzed and not dead, the meat stays fresh while the wormlike Wasp Larva eats first nonessential muscles before turning to the vital organs, eating the spider alive.