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Biocontrol introduction

Target pest: Mythimna separata (Lepidoptera: Noctuidae), cosmopolitan armyworm

Agent introduced: Trichogramma brassicae (Hymenoptera: Trichogrammatidae) = Trichogramma maidis

General comments:

The biocontrol agent imported as Trichogramma evanescens was qualified by Cameron et al. (1989) as Trichogramma evanescens (sens. lat.) because a 1980 publication by Pintureau & Voegelé showed that in Europe it included a second species, T. maidis [subsequently synonymised with T. brassicae (Noyes 2019) (Universal Chalcidoidea Database - accessed 7 November 2022)]. Therefore, T. brassicae was potentially included in the 'T. evanescens' importations and releases. See the Trichogramma evanescens (sens. lat.) introduction record for details.


Cameron PJ, Hill RL, Bain J, Thomas WP (1989). A Review of Biological Control of Invertebrate Pests and Weeds in New Zealand 1874-1987. Technical Communication No 10. CAB International Institute of Biological Control. DSIR Entomology Division. 424p.

Noyes JS (2019). Universal Chalcidoidea Database Natural History Museum. Last updated March 2019. http://www.nhm.ac.uk/chalcidoids