Discovery of Trissolcus japonicus (Hymenoptera: Scelionidae) in Ontario, Canada

Citation

Gariepy, T.D., Talamas, E.J. (2019). Discovery of Trissolcus japonicus (Hymenoptera: Scelionidae) in Ontario, Canada. The Canadian Entomologist, [online] 151(6), 824-826. http://dx.doi.org/10.4039/tce.2019.58

Plain language summary

An Asian parasitoid that was being considered as a biological control agent for the invasive pest, Brown Marmorated Stink Bug (BMSB), has recently been discovered in several countries outside of Asia. Here we report the discovery of this parasitoid in Ontario for the first time.

Abstract

We report the detection and adventive establishment of the samurai wasp, Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae), a candidate classical biological control agent for the invasive Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), in southwestern Ontario, Canada. Nine naturally laid, field-collected pentatomid egg masses were collected in 2017 and 2018, and two of these egg masses, belonging to Halyomorpha halys and Podisus maculiventris (Say) (Hemiptera: Pentatomidae), produced adults of T. japonicus. The identification of T. japonicus was confirmed using DNA barcoding as well as morphological characteristics. The remaining egg masses yielded adults of the native Telenomus podisi Ashmead (Hymenoptera: Platygastridae) and Anastatus reduvii (Ashmead) (Hymenoptera: Eupelmidae).

Publication date

2019-12-30

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