Spread and potential host range of the invasive oak lace bug [Corythucha arcuata (Say, 1832) – Heteroptera: Tingidae] in Eurasia
2020
Csóka, György | Hirka, Anikó | Mutun, Serap | Glavendekić, Milka | Mikó, Ágnes | Szőcs, Levente | Paulin, Márton | Eötvös, Csaba Béla | Gáspár, Csaba | Csepelényi, Mariann | Szénási, Ágnes | Franjević, Milivoj | Gninenko, Yuri | Dautbašić, Mirza | Muzejinović, Osman | Zúbrik, Milan | Netoiu, Constantin | Buzatu, Andrei | Bălăcenoiu, Flavius | Jurc, Maja | Jurc, Dušan | Bernardinelli, Iris | Streito, Jean‐Claude | Avtzis, Dimitrios | Hrašovec, Boris
The North American oak lace bug feeds on leaves of ‘white oaks” in its native range. In Europe, it was first discovered in northern Italy in 2000. In recent years, it has subsequently spread rapidly and population outbreaks have been observed in several European countries. In the present study, we summarize the steps of its expansion. To predict its potential host range, we checked 48 oak species in 20 sentinel gardens in seven countries between 2013 and 2018. In total, 27 oak species were recorded as suitable hosts; 13 of them are globally new ones, 23 out of the 29 in section Quercus (∼ white oaks, an intrageneric taxonomic unit within genus Quercus), including Asian oaks, native to Japan, Korea and China, and four out of five in section Cerris (another intrageneric unit of the same genus), were accepted as hosts. None of the species in section Lobatae (red oaks) or in the Ilex group was accepted. Host records were also collected in forest stands of 10 countries. We found 11 oak species that were infested. Outbreak populations were most commonly found on Quercus robur, Quercus frainetto, Quercus petraea and Quercus cerris, comprising widespread and outstandingly important oaks species in Europe. Based on our findings, we conclude that suitable hosts for oak lace bug are present in most of Europe and Asia. This means that a lack of hosts will likely not restrict further range expansion.
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