Dacnusa sibirica (parasitoid)

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Dacnusa sibirica (click on image to enlarge it)
CBG Photography Group
Source: BOLD Systems

Dacnusa sibirica (parasitoid) Telenga, 1935

This wasp is a parasitoid of leafminers and is commercially produced. It is available in several European countries and used mainly against Liriomyza in greenhouses. Common targets are the American serpentine leafminer (Liriomyza trifolii), the pea leafminer (Liriomyza huidobrensis) and the tomato leafminer (Liriomyza bryoniae). It may be sold as mixtures together with Diglyphus isaea.

D. sibirica is native to Europe, but extended its distribution in the 1990s to parts of Asia and Africa. It is a solitary, koinobiont endoparasitoid and adults are 2-3 mm long and black. Females paralyse young Liriomyza larvae and lay an egg into it. The leafminer continues its development during the parasitization process and after 2-3 weeks, the parasitoid has completed its own development. At that time, the adult wasp emerges from the leafminer pupa which subsequently dies. For the suitability of different leafminer hosts, see for example Abe et al. (2005).