B57I9152-Therion-circumflexum - a photo on Flickriver

            Therion circumflexum.

A species of ichneumon wasp in the family Ichneumonidae.

Body length 14–25 mm.

This species is widespread in large parts of  Europe, Asia, North Africa and also occurs in North America. 

The head and thorax of this relatively large parasitic wasps is predominantly black. The scutellum is yellow. The abdomen is predominantly orange. Usually the rear end and the top of the third tergites are black. Flies with its disproportionately long back legs dangling.  

The adult wasps of this species fly from mid June to September. They parasitize various moth species including Small Engrailed (Ectropis crepuscularia), Privet Hawk Moth (Sphinx ligustri), Pine Hawk Moth (Sphinx pinastri), Pebble Prominent (Notodonta ziczac), and a number of Owlet moths, (Noctuidae).  The female wasp lays its eggs in the caterpillars and the hatched larvae feed on the caterpillar. It pupates later in a thin web. 

About 10% of the species of insects found in Britain are ichneumonids.

Taken on: September 26, 2021

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