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  • Title: Status of Stink Bug (Hemiptera: Pentatomidae) Egg Parasitoids in Soybeans in Louisiana.
    Author: Moonga MN, Kamminga K, Davis JA.
    Journal: Environ Entomol; 2018 Dec 07; 47(6):1459-1464. PubMed ID: 30351344.
    Abstract:
    Stink bugs are important insect pests of soybean, Glycine max (L.), in Louisiana. Scouting, economic thresholds, and insecticide applications are the main strategies used in the integrated pest management of soybean insect pests. However, biological control of stink bug eggs by parasitoids has the potential to reduce populations of these pests. A survey of stink bug egg parasitoids was conducted at different sites in Louisiana from 2008 to 2010. Similarly, a study on the incidence of stink bug egg parasitoids within soybean vertical strata and plant structures was conducted in 2009 to 2011. Species of stink bug eggs collected during the studies included the redbanded stink bug, Piezodorus guildinii (Westwood), the brown stink bug species complex, Euschistus spp., the southern green stink bug, Nezara viridula L., the spined soldier bug, Podisus maculiventris (Say), and the green stink bug, Chinavia hilaris (Say). The percentage of stink bug eggs parasitized in the central location of Louisiana was higher compared with the northwest location during the 2008 to 2010 growing seasons. There were no differences in percentage of stink bug egg parasitism within soybean plant strata between 2009 and 2011. Telenomus podisi Ashmead (Hymenoptera: Platygastridae) was the most abundant parasitoid, and it showed preference for P. guildinii. Other platygastrid species that emerged included Trissolcus euschisti Ashmead (Hymenoptera: Platygastridae), Gryon obesum Masner (Hymenoptera: Platygastridae), and Telenomus longicornis Johnson (Hymenoptera: Platygastridae). This study is the first to report the parasitization of P. guildinii eggs on soybeans in the United States.
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