Ichneumon Wasps are parasitoid Wasps (Wasps whose parasitic larvae grow within the body of a living host) that target a wide range of hosts, including Spiders, Beetles, Butterflies and Moths, and even other Wasps. Most species target the larvae of other Insects, with the female laying a single egg beneath the skin of the victim, the larval Wasp then growing inside the host, which is able to grow and feed, but when the host pupates the parasite finishes consuming it and emerges from the victim's pupa as an adult Wasp. Almost all Ichneumon Wasps are host specific, targetting only a single species, and the family is the largest known family of Wasps (and one of the largest known families of Insects) with over 60 000 species.
In a paper published in the journal ZooKeys on 15 March 2016, Ying Zhang and Mao-Ling Sheng of the General Station of Forest Pest Management of the State Forestry Administration and Zi-Cheng Xiong of the Forest Pest Control and Quarantine Station of Etuoke, describe a new species of Ichneumon Wasp from Dulan County in Qinghai Province, China.
The species is described from catapillars of Snout Moths of the species Bazaria turensis collected from a shrubbery in August 2013 and fromunidentified catapillars collected from scrubland at Etuoke in Inner Mongolia in September 2014 and raised in cages until they matured. It is placed in the genus Trieces, and given the specific name etuokensis, meaning 'from Etuoke'. The Wasps are 2.8 mm (females) and 3.1 mm long (males) and black in colour, except for a yellow face and yellow-brown markings on the limbs and underside.
Trieces etuokensis, female in dorsal view. Zhang et al. (2016).
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