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Anagrus

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Serguei V Triapitsyn – 1st expert on this subject based on the ideXlab platform

  • Analysis of biological traits of Anagyrus cachamai and Anagyrus lapachosus to assess their potential as biological control candidate agents against Harrisia cactus mealybug pest in Puerto Rico
    BioControl, 2019
    Co-Authors: María B. Aguirre, Serguei V Triapitsyn, Guillermo A. Logarzo, Hilda Diaz-soltero, Stephen D. Hight, Octavio A. Bruzzone

    Abstract:

    The Harrisia cactus mealybug (HCM), Hypogeococcus sp. (Hemiptera: Pseudococcidae), is devastating native cacti in Puerto Rico and threatens cacti throughout the Caribbean, Mexico, Central and North America. In South America, its native area, various natural enemies keep HCM under control. Two South American parasitoids, Anagyrus cachamai Triapitsyn, Logarzo & Aguirre and A. lapachosus Triapitsyn, Aguirre & Logarzo (Hymenoptera: Encyrtidae), were selected as potential biological control agents. Rearing protocol to conduct mass production, specificity studies and several aspects of the biology of these species were studied under laboratory conditions in Argentina. Anagyrus cachamai and A. lapachosus successfully attacked early instars of Hypogeococcus sp., have a balanced sex ratio, exhibited a development time synchronized with that of the host, and presented differences in their reproductive biology and development time. All these characteristics make these parasitoids promising candidates for introduction as biological control agents against the HCM pest in Puerto Rico.

  • egg parasitoids of the tea green leafhopper empoasca onukii hemiptera cicadellidae in japan with description of a new species of Anagrus hymenoptera mymaridae
    ZooKeys, 2019
    Co-Authors: Serguei V Triapitsyn, Paul F Rugmanjones, Tetsuya Adachihagimori, Adema Barry, Kazunori Matsuo, Kazuro Ohno

    Abstract:

    Fairyfly (Hymenoptera, Mymaridae) egg parasitoids of the tea green leafhopper Empoasca (Matsumurasca) onukii Matsuda (Hemiptera, Cicadellidae), an economically important pest in Asia of the tea plant, Camelliasinensis, were identified from specimens reared in Japan. Using a combination of genetic and morphological evidence, Anagrus (Anagrus) rugmanjonesi Triapitsyn & Adachi-Hagimori, sp. n., is described and illustrated. It is shown to be different from the most similar A.turpanicus Triapitsyn & Hu, an egg parasitoid of a leafhopper pest of cultivated grapes which is known from Xinjiang Uyghur Autonomous Region in China. Mitochondrial and nuclear ribosomal DNA sequence data provide clear evidence for the separation of A.rugmanjonesi from A.turpanicus and other members of the Anagrusincarnatus Haliday species complex. A key to females of the Japanese species of Anagrus Haliday is given. Two other species of Mymaridae, Aresconenocki (Subba Rao & Kaur) and Stethyniumempoascae Subba Rao, are also identified, albeit the latter one only tentatively. Both latter taxa are newly recorded from Japan, and E.onukii represents their new host association.

  • molecular morphological and biological differentiation between Anagrus virlai sp n an egg parasitoid of the corn leafhopper dalbulus maidis hemiptera cicadellidae in the new world and Anagrus incarnatus from the palaearctic region hymenoptera mymarid
    Neotropical Entomology, 2019
    Co-Authors: Serguei V Triapitsyn, Paul F Rugmanjones, P S Tretiakov, Luft E Albarracin, Gustavo Moyaraygoza, Ranyse B Querino

    Abstract:

    The common New World egg parasitoid of the corn leafhopper Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae), an economically important pest of maize from Argentina to southern USA, has long been misidentified as the Palaearctic species Anagrus incarnatus Haliday or its synonym A. breviphragma Soyka (Hymenoptera: Mymaridae). Using a combination of genetic and morphometric methods, and available biological information, specimens reared from eggs of D. maidis in Argentina and Mexico, described and illustrated here as Anagrus (Anagrus) virlai Triapitsyn sp. n., are shown to be different from those of A. incarnatus from the Palaearctic region. Mitochondrial and nuclear ribosomal DNA sequence data provide clear evidence for the separation of the two species. Anagrus virlai is also known from Brazil, Colombia, Guadeloupe (France), and Guyana.

Ranyse B Querino – 2nd expert on this subject based on the ideXlab platform

  • molecular morphological and biological differentiation between Anagrus virlai sp n an egg parasitoid of the corn leafhopper dalbulus maidis hemiptera cicadellidae in the new world and Anagrus incarnatus from the palaearctic region hymenoptera mymarid
    Neotropical Entomology, 2019
    Co-Authors: Serguei V Triapitsyn, Paul F Rugmanjones, P S Tretiakov, Luft E Albarracin, Gustavo Moyaraygoza, Ranyse B Querino

    Abstract:

    The common New World egg parasitoid of the corn leafhopper Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae), an economically important pest of maize from Argentina to southern USA, has long been misidentified as the Palaearctic species Anagrus incarnatus Haliday or its synonym A. breviphragma Soyka (Hymenoptera: Mymaridae). Using a combination of genetic and morphometric methods, and available biological information, specimens reared from eggs of D. maidis in Argentina and Mexico, described and illustrated here as Anagrus (Anagrus) virlai Triapitsyn sp. n., are shown to be different from those of A. incarnatus from the Palaearctic region. Mitochondrial and nuclear ribosomal DNA sequence data provide clear evidence for the separation of the two species. Anagrus virlai is also known from Brazil, Colombia, Guadeloupe (France), and Guyana.

  • association of Anagrus amazonensis triapitsyn querino feitosa hymenoptera mymaridae with aquatic insects in upland streams and floodplain lakes in central amazonia brazil
    Revista Brasileira De Entomologia, 2016
    Co-Authors: Malu Christine Barbosa Feitosa, Ranyse B Querino, Neusa Hamada

    Abstract:

    Anagrus amazonensis Triapitsyn, Querino & Feitosa (Hymenoptera, Mymaridae) is a parasitoid that uses aquatic insect eggs as a host for the development of its immature stages. The objectives of this study are to record the interaction between A. amazonensis and its hosts and the aquatic plants used by these hosts to lay their eggs. Field work was conducted in floodplain lakes and upland (terra firme) streams, in four municipalities in Amazonas State, Brazil, where aquatic plants were scanned for the presence of aquatic insect eggs. In the laboratory, eggs were maintained in plastic containers with water until the emergence of the parasitoid or of the first instar insect. A total of 1223 adults of A. amazonensis emerged from eggs of Hemiptera, Lepidoptera and Odonata; these eggs were collected on 12 species of aquatic plants.

  • Association of Anagrus amazonensis Triapitsyn, Querino & Feitosa (Hymenoptera, Mymaridae) with aquatic insects in upland streams and floodplain lakes in central Amazonia, Brazil
    Revista Brasileira De Entomologia, 2016
    Co-Authors: Malu Christine Barbosa Feitosa, Ranyse B Querino, Neusa Hamada

    Abstract:

    Anagrus amazonensis Triapitsyn, Querino & Feitosa (Hymenoptera, Mymaridae) is a parasitoid that uses aquatic insect eggs as a host for the development of its immature stages. The objectives of this study are to record the interaction between A. amazonensis and its hosts and the aquatic plants used by these hosts to lay their eggs. Field work was conducted in floodplain lakes and upland (terra firme) streams, in four municipalities in Amazonas State, Brazil, where aquatic plants were scanned for the presence of aquatic insect eggs. In the laboratory, eggs were maintained in plastic containers with water until the emergence of the parasitoid or of the first instar insect. A total of 1223 adults of A. amazonensis emerged from eggs of Hemiptera, Lepidoptera and Odonata; these eggs were collected on 12 species of aquatic plants.

G Viggiani – 3rd expert on this subject based on the ideXlab platform

  • On a new species of Anagrus (Hymenoptera: Mymaridae)
    Journal of Entomological and Acarological Research, 2018
    Co-Authors: G Viggiani, F Nugnes

    Abstract:

    The depository institutions of the type material of  Anagrus nepetellae Viggiani and Nugnes sp. n. are indicated.

  • On a new species of Anagrus (Hymenoptera: Mymaridae) A note on the availability of the name Anagrus nepetellae Viggiani & Nugnes
    Journal of Entomological and Acarological Research, 2018
    Co-Authors: G Viggiani, F Nugnes

    Abstract:

    The depository institutions of the type material of Anagrus nepetellae Viggiani and Nugnes sp. n. are indicated.

  • an integrative approach to species discrimination in the Anagrus atomus group sensu stricto hymenoptera mymaridae with a description of a new species
    Systematics and Biodiversity, 2017
    Co-Authors: F Nugnes, Umberto Bernardo, G Viggiani

    Abstract:

    Egg parasitoids of the genus Anagrus Haliday (Hymenoptera: Mymaridae) are natural enemies of many pests around the world. We used an integrative approach to characterize some species belonging to the Anagrus atomus group, using specimens reared from leafhoppers infesting some Lamiaceae. Starting from morphological identifications based on available keys, we carried out a multi-locus genetic characterization using phylogenetic and species delimitation analyses, and integrated it with biological and morphometric evidence. This approach revealed the existence of a new species, A. nepetellae sp. nov., here described along with its phenological traits. The approach also allowed us to characterize the expected taxonomic stability of other putative species within the group. We propose two new species groups called the atomus group sensu stricto and the vilis group, with the goal of streamlining the taxonomy of the atomus group. We also present a key for the identification of females of the European species of th…