Contributions to the classification of North American Microctonus (Braconidae, Euphorinae)

Pucci, Thomas M.

doi:10.11646/zootaxa.3725.1.1

Cited by 2 publications

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“…The species is locally important in controlling alfalfa weevil in the central, northern states of the United States of America (Radcliffe and Flanders 1998), but, despite introductions (Coulson 1992), it was not found in surveys of the northern states of North Dakota, South Dakota, Wyoming, and Montana (Rand 2013;Rand et al 2018). Apart from two specimens from western Alberta, the most westerly occurrence of M. colesi as recorded in the distribution map of Pucci (2013) is in the state of Wisconsin. Our finding of a single specimen from Lethbridge despite considerable collecting effort across the Canadian Prairies confirms that M. colesi is present in Alberta, but we could not confirm its presence in Saskatchewan and Manitoba.…”

Section: Discussionmentioning

confidence: 99%

Distribution of alfalfa weevil (Coleoptera: Curculionidae) and its parasitoids on the Canadian Prairies, with a key to described species of NearcticBathyplectes(Hymenoptera: Ichneumonidae)

et al. 2020

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This study recorded distribution and size of alfalfa weevil (Hypera postica (Gyllenhal); Coleoptera: Curculionidae) populations in Saskatchewan, Canada, from 2001 to 2014. The spread of alfalfa weevil across the province, originally southwest to southeast, was northward and westward during this time. By 2014, only northwestern and west central areas remained relatively alfalfa weevil free. From a minor pest in 2001, the alfalfa weevil increased to be the principal insect pest of alfalfa (Medicago sativa Linnaeus; Fabaceae) in 2014. The parasitoid Bathyplectes curculionis (Thomson) (Hymenoptera: Ichneumonidae) had a similar distribution. Other parasitoids collected included Oomyzus incertus (Ratzeburg) (Hymenoptera: Eulophidae) and Microctonus colesi Drea (Hymenoptera: Braconidae). Conservation of these parasitoids is an important step in maximising their effectiveness as alfalfa weevil biocontrol agents. Molecular sequencing of the DNA barcoding region of specimens identified morphologically as B. curculionis indicated moderately high levels of sequence divergence among specimens (up to 5.8%); however, interspecific genetic variation between other species of Bathyplectes Förster was also high. Therefore, we conclude that B. curculionis was the only Bathyplectes species collected in our study. An illustrated key to the described species of Bathyplectes in North America is provided, as well as DNA barcodes of most species, including five distinct barcodes in the Bathyplectes curculionis–B. exiguus (Gravenhorst) species complex.

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Section: Discussionmentioning

confidence: 99%

Distribution of alfalfa weevil (Coleoptera: Curculionidae) and its parasitoids on the Canadian Prairies, with a key to described species of NearcticBathyplectes(Hymenoptera: Ichneumonidae)

et al. 2020

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Biology, Ecology, and Management of Flea Beetles in Brassica Crops

Li,

Costamagna,

Beran

et al. 2024

Annu. Rev. Entomol.

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Brassica vegetable and oilseed crops are attacked by several different flea beetle species (Chrysomelidae: Alticini). Over the past decades, most research has focused on two Phyllotreta species, Phyllotreta striolata and Phyllotreta cruciferae, which are major pests of oilseed rape in North America. More recently, and especially after the ban of neonicotinoids in the European Union, the cabbage stem flea beetle, Psylliodes chrysocephala, has become greatly important and is now considered to be the major pest of winter oilseed rape in Europe. The major challenges to flea beetle control are the prediction of population dynamics in the field, differential susceptibility to insecticides, and the lack of resistant plant cultivars and other economically viable alternative management strategies. At the same time, many fundamental aspects of flea beetle biology and ecology, which may be relevant for the development of sustainable control strategies, are not well understood. This review focuses on the interactions between flea beetles and plants and summarizes the literature on current management strategies with an emphasis on the potential for biological control in flea beetle management.

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Contributions to the classification of North American Microctonus (Braconidae, Euphorinae)

Abstract: Contributions to the classification of North American Microctonus (Braconidae, Euphorinae) (Zootaxa 3725) 150 pp.; 30 cm.

Cited by 2 publications

References 1 publication

Distribution of alfalfa weevil (Coleoptera: Curculionidae) and its parasitoids on the Canadian Prairies, with a key to described species of NearcticBathyplectes(Hymenoptera: Ichneumonidae)

Distribution of alfalfa weevil (Coleoptera: Curculionidae) and its parasitoids on the Canadian Prairies, with a key to described species of NearcticBathyplectes(Hymenoptera: Ichneumonidae)

Biology, Ecology, and Management of Flea Beetles in Brassica Crops

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