Parasitoids of the lime leaf miner Phyllonorycter issikii (Lepidoptera: Gracillariidae) recorded throughout the area it recently colonized

Abstract

Phyllonorycter issikii (Lepidoptera: Gracillariidae) has recently spread over a considerable part of the Eurasian continent. So far, in Europe, unlike in russia, it has not significantly affected its food plant (Tilia cordata), but its effect may increase over time. The regulating potential of associated parasitoid natural enemies is still low, which probably allows further leaf miner range expansion and population growth. This species is potentially capable of inflicting considerable damage on its host. Therefore, it is important to study its natural enemies, especially their oviposition behaviour and biology. In this paper, we summarize the results of rearing experiments throughout the area it has recently occupied, including our own study in Hungary. Here we list 46 species of parasitoids recorded from P. issikii. None of these species are likely to be able regulate the abundance of P. issikii. Further studies are needed to determine their effect on the abundance of this host.

Noi semnalari ale unor specii de insecte forestiere invazive in Romania

“…Având în vedere extinderea arealului acestei specii dinspre estul spre vestul Europei (Ermolaev 2014), este foarte probabil că și în județul Suceava specia este prezentă de la începutul anilor 2000, chiar dacă nu a fost semnalată până acum. De asemenea, este de așteptat ca ea să fie prezentă și în celelalte zone ale țării, fiind deja semnalată din Ungaria (Szabóky & Csóka 2003) și Bulgaria (Tomov 2009, citat de Szőcs et al 2015).…”

From east to west across the Palearctic: Phylogeography of the invasive lime leaf miner Phyllonorycter issikii (Lepidoptera: Gracillariidae) and discovery of a putative new cryptic species in East Asia

“…During the last three decades, P . issikii was progressively recorded in Eastern and Western Europe [ 6 , 17 , 18 ]. Presently, the southern border of the insect distribution in Europe runs through Croatia [ 19 ], Bulgaria [ 20 ] and Serbia [ 21 ], reaching Northern Italy [ 22 ].…”

Contribution to the knowledge of the parasitoid fauna of leaf mining sawflies (Hymenoptera: Tenthredinidae) of forest plants in Hungary

“…Overall, the parasitoid species, listed in this work, are typical parasitoids of leaf mining sawflies. Eight of them are largely polyphagous and can be found on leaf mining lepidoptera (20,22,23,28,29), as well as on invasive species (14, 19). Specialist parasitoids of leaf mining sawflies, species like C. nitetis, C. eurynota and C. sp.…”

“…Metallus pumilus (Klug, 1816) is oligophagous on Rubus species with two generations a year (4, 28). The importance of parasitoids as regulating factors of Lepidoptera species mining on trees (both native ones and aliens) is reflected in the high number of papers published in the past decade (13)(14)(15)(16)(17)(18)(19). Parasitoid complexes of leaf mining sawflies have been less studied recently, and only slightly some older publications deal with them (20)(21)(22)(23)(24) The Universal Chalcidoidae Database lists species associated with leaf mining sawflies only from a few works.…”