The lime leaf miner, Phyllonorycter issikii, is a moth species native to East Asia, which recently invaded considerable part of Europe. A study on the natural enemies of this invasive species was conducted in Bulgaria. Tilia cordata leaves infested with the lime leaf miner were collected in 2015 and 2016 in two public parks in Sofia. A total of eleven eulophid parasitoids (Hymenoptera: Eulophidae) belonging to three subfamilies -Entedoninae, Eulophinae and Tetrastichinae, and one braconid species (Hymenoptera: Braconidae) were recorded. In addition, one unidentified ichneumonid species was reared. Minotetrastichus platanellus was the most abundant species in the samples comprising 76.88% of the parasitoids reared from collected immature and pupal stages of Ph. issikii. It is followed by Sympiesis gordius (6.53%) and S. sericeicornis (6.03%). Three new host-parasitoid associations were established. The entomopathogenic fungi Beuveria bassiana and Metarhizium anisopliae (Hypocreales) were isolated for the first time from cadavers of Ph. issikii larvae and pupae. Based on the presented observation we hypothesized that the lime leaf miner can produce three generations in Bulgaria.

-Pteromalus varians (Spinola, 1808) is fi rstly recorded from Quercus leaves, mined by the trumpet leafminer moth Tischeria ekebladella (Bjerkander, 1795) in forests near Budapest, Hungary. A total of 392 parasitoids were reared in laboratory conditions, from which 14 females and 362 males belong to P. varians. A short review on the host range of P. varians is given. Known biological relationships of Tischeria to some other pteromalids and a possible similarity between host ranges of P. varians and Pteromalus semotus are also commented. With 2 fi gures.

In the last decade the cypress jewel beetle Ovalisia festiva (Linnaeus, 1767) has become a real threat in many European countries. Although it was reported from Bulgaria long ago, there is no data on its current status. The aim of this study is to present new data on cypress jewel beetle’s distribution, damage and natural enemies in the country. The research was conducted in the period 2016-2019, with 106 localities on the territory of Bulgaria examined. As a result of the current study 16 localities new for this species were found. Our rearings identified adults of the parasitoid Metacolus unifasciatus Forster, 1856 (Hymenoptera, Pteromalidae) and the parasitizing mites belonging to genus Pyemotes. Amerling, 1861 (Acarina: Pyemotidae). The parasitoid-host association of M. unifasciatus with O. festiva is considered here a new biological relationship, not previously recorded for these species. Currently the cypress jewel beetle O. festiva is widely distributed in Bulgaria and can be regarded as an important pest in landscaping.

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