About Therion circumflexum (Linnaeus, 1758)
Therion circumflexum is a relatively large species of parasitic wasp. Adults of this species reach an approximate body length of 14–25 millimetres, or 0.55–0.98 inches. The head and thorax are predominantly black, while the scutellum is yellow. The abdomen is mostly orange, but typically the rear end and the upper surface of the third tergites are black. Females have a short spike. The legs are yellow-orange, though the posterior femur and posterior tibia have dark brown tips. The wings are orange-hyaline. This species lacks a median apical tooth on the clypeus, and its hind tarsal claws are evenly curved. This species is widespread across most of the Palearctic realm, which includes Europe, Asia, and North Africa, and it is also found in the Nearctic realm of North America.
