Tetrastichus planipennisi (parasitoid)
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Author(s): Stephen Ausmus
Source: Wikimedia Commons
Author(s): David Cappaert, Michigan State University
Source: IPM Images
Tetrastichus planipennisi (parasitoid) Yang, 2006
This wasp is a gregarious larval ectoparasitoid of the emerald ash borer, Agrilus planipennis, in eastern Asia. It has been released in North America as part of a classical biological control program, involving several parasitoids. It became established there in 2013 and establishment has been particularly successful in northern states of the U.S. However, it has a relatively short ovipositor and can only reach emerald ash borer larvae in ash boles or smaller branches (Gould et al., 2020).
One parasitoid female produces an offspring of around 50 on average during its lifetime, with a maximum of more than 100 (Duan et al., 2011). There are up to 4 generations per year. The adult parasitoid is ~ 4 mm long, it survives the winter inside its host, emerging in spring.
