The study of agricultural pests of the genus Liriomyza (Diptera: Agromyzidae) in Nagorno-Karabakh

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Abstract

The goal of the research is to study polyphagous species of the genus Liriomyza (Diptera, Agromyzidae) in Nagorno-Karabakh. The vegetable leaf-miner L. sativae (Blanchard, 1938), the tomato leaf-miner L. bryoniae (Kaltenbach, 1858) and the cabbage or serpentine leaf-miner L. brassicae (Riley, 1885) have been revealed among them. They affect mainly plants from the families Brassicaceae, Cucurbitaceae, Fabaceae, Solanaceae, Asteraceae. The quarantine species L. sativae has been described in the Caucasus for the first time. The paper presents distinctive features of the genus Liriomyza, a morpho-biological description of the imagoes, a structure of their wings, male genitalia, in particular the aedeagus, structural features of larvae and pupae of certain species, mines formed by the feeding of larvae, their harmfulness on the leaves of various plants. In terms of the number of host plant species, as well as the extensiveness and intensity of plant infection, the most common pest is L. sativae, the least common and harmful is L. brassicae. The larvae of L. sativae often mine the leaves of Phaseolus vulgaris and Solanum lycopersicum. Methods of a variance analysis have revealed that the sexual dimorphism of the studied species is most expressed in L. bryoniae.

About the authors

Nonna M. Grigoryan

Artsakh State University

Author for correspondence.
Email: nonna.grigoryan.88@mail.ru

postgraduate student of Biology and Chemistry Department

Stepanakert

Varuzhan S. Hovhannisyan

Armenian State Pedagogical University after Khachatur Abovyan

Email: varugh_zool52@mail.ru

doctor of biological sciences, professor of Ecology and Sustainable Development Department

Armenia, Yerevan

Hasmik G. Galstyan

Artsakh State University

Email: ghg77@mail.ru

doctor of biological sciences, associate professor of Biology and Chemistry Department

Stepanakert

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Supplementary files

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2. Figure 1 - Distinctive features of adults of the genus Liriomyza. A - external structure (yellow shield and black back); B - wing structure (costal vein reaches M₁₊₂); B - posteriorly inclined orbital setae

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3. Figure 2 - Varieties of the wings of mine flies. A - L. sativae; B - L. bryoniae; B - L. brassicae

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4. Figure 3 - Types of min. 1 - L. sativae mines on the Solanum lycopersicum leaf; 2 - L. bryoniae mines on Beta vulgaris leaf; 3 - L. brassicae mines on the Phaseolus vulgaris leaf

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5. Figure 4 - Arrangement of hind spiracles in pupae of mining flies. 1 - L. sativae; 2 - L. bryoniae; 3 - L. brassicae

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6. Figure 5 - Distifallus of certain species of Liriomyza (magnification × 100): 1 - L. sativae, side view; 2 - L. sativae, dorsoventral projection; 3 - L. sativae, seed pump; 4 - L. bryoniae, dorsoventral projection; 5 - L. bryoniae, side view; 6 - L. bryoniae, seed pump; 7 - L. brassicae, side view; 8 - L. brassicae, dorsoventral projection; 9 - L. brassicae, seed pump

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Copyright (c) 2020 Grigoryan N.M., Hovhannisyan V.S., Galstyan H.G.

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