Oobius agrili (parasitoid)

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Oobius agrili female - 1) hind leg, 2) antenna, 3) lateral habitus, 4) forewing base (click on image to enlarge it)
Author(s): Serguei V. Triapitsyn, Toby R. Petrice, Michael W. Gates and Leah S. Bauer
Source: Zookeys (2015) 498, p. 35
Oobius agrili - left: emerging from an emerald ash borer (Agrilus planipennis) egg, right: diapausing larva (click on image to enlarge it)
Author(s): Miles T. Wetherington, David E. Jennings, Paula M. Shrewsbury and Jian J. Duan
Source: Ecology and Evolution (2017), vol. 7 (20), p. 8581

Oobius agrili (parasitoid) Zhang & Huang, 2005

This wasp is a solitary egg parasitoid of the emerald ash borer, Agrilus planipennis. Both, wasp and beetle host are native to northeastern Asia and the wasp can account for 50-60% of the egg mortality of the beetle. O. agrili has been released in North America starting in 2007 and has become established in various areas of north-eastern North America.

The beetle host deposits its egg into cracks in the bark of ash trees and the female parasitoids search for them. O. agrili can reproduce parthenogenetically and typically passes through multiple generations per year.