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

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...

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Bibliographic Details
Published in:Canadian entomologist 2019-12, Vol.151 (6), p.824-826
Main Authors: Gariepy, Tara D., Talamas, Elijah J.
Format: Article
Language:English
Subjects:
Adults
Agriculture
Biological control
Deoxyribonucleic acid
DNA
DNA barcoding
Eggs
Entomology
Gene sequencing
Halyomorpha halys
Hemiptera
Hymenoptera
Insect Management-NOTE
Insects
Laboratories
Morphology
Pentatomidae
Physical characteristics
Regulatory approval
Scelionidae
Trissolcus japonicus
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Summary: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).
ISSN:0008-347X
1918-3240
DOI:10.4039/tce.2019.58