Observations on the occurrence and phenology of the invasive elm defoliator Aproceros leucopoda (Hymenoptera: Argidae) in the Czech Republic

《Observations on the occurrence and phenology of the invasive elm defoliator Aproceros leucopoda (Hymenoptera: Argidae) in the Czech Republic》

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作者单位: [Holusa, Jaroslav; Stodulkova, Petra] Czech Univ Life Sci, Fac Forestry & Wood Sci, Dept Forest Protect & Entomol, Kamycka 129, CZ-16521 Prague 6, Suchdol, Czech Republic. [Macek, Jan] Nat Hist Museum, Natl Museum, Dept Entomol, Cirkusova 1740, CZ-19300 Prague 9, Horni Pocernice, Czech Republic. Holusa, J (reprint author), Czech Univ Life Sci, Fac Forestry & Wood Sci, Dept Forest Protect & Entomol, Kamycka 129, CZ-16521 Prague 6, Suchdol, Czech Republic. E-Mail: holusaj@seznam.cz; macjan@seznam.cz

摘要: Aproceros leucopoda has been found at nine locations in urban areas and in forests in the Czech Republic. Aproceros leucopoda was first reported at a location 700 m a.s.l. in the northern part of the country in 2011. The other locations range in elevation from 150 to 460 m a.s.l. In the current study, A. leucopoda was studied in four plots, where larvae and their zigzag feeding tracks were observed on 10 Ulmus trees located south of Lannot (southeastern Czech Republic) in 2014 and 2015. In 2014, feeding tracks and larvae were detected in late May, from 22 June to 13 July, and from 9 August to 6 September, suggesting the occurrence of three generations per year in the southeastern Czech Republic. The southern Czech Republic has been colonized much earlier than other parts of the country because of its proximity to localities with A. leucopoda in Slovakia and Austria. The presence of larvae or evidence of larval feeding was detected on only 2.84% of monitored leaves. We suggest that A. leucopoda endangers solitary elms in urban greening areas more than elms in forests. (C) 2016 Elsevier GmbH. All rights reserved.