New records of 41 species collected in Balkans during more collecting trips between 1985 and 1996 are given. These species were observed during the day and night field surveys. Distributional or taxonomical notes are given for other species. Acrolepiopsis vesperella (Zeller, 1840) Herculia incarnatalis (Zeller, 1847) and Crassa unitella (Hübner, 1796) are recorded for the first time in Bulgaria. Yponomeuta rorella (Hübner, 1796), Y. cagnagella (Hübner, 1813), Ethmia bipunctella (Fabricius, 1775) and Metacrambus carectellus (Zeller, 1847) are new species in Croatian fauna. Acompsia tripunctella ([Denis & Schiffermüller], 1775) is new to Greece. With 10 figures.

The author announces the presence of Capperia fusca (Hofmann, 1898) in Hungary, the first record of the taxon in the Pannonian biogeographical Region. He describes the habitat and gives a photograph of the species, drawing of the genitalia and distribution map. With S figures.

The invasive gelechiid moth, potato tuberworm Phthorimaea operculella (Zeller, 1873) was first recorded in Hungary (Komló, Baranya County) and Northern Croatia (Lug, Osijek-Baranja County) in December 2015. This quarantine species has not been reported from Hungary so far and it was known in Croatia only from the coastal region. The occurrence of Ph. operculella in the Carpathian basin is of great concern as this invader is able to cause negative impacts on the Hungarian potato cultivation. This occurrence of the species is one of the northernmost data in Europe so far.

The author summarizes Somogy county's Microlepidoptera fauna for first time. He shows that 971 species were found in the county. 6 species and subspecies are endemic in the Carpathian Basin. The locus typicus of some sepecies and subspecies is here: Rhigognostis kovácsi

Lyonetia ledi Wocke, 1859 is a very rare and little-known member of the Palearctic fauna. The populations can be very inconspicuous and can therefore have been passed unnoticed during previ-ous field studies. It is emphasized that the Palaearctic fauna further study and that habitats of Lyonetia ledi and other rare or declining species may yet be found. In Central Europe, Lyonetia ledi is very spo-radically distributed in only a few isolated localities. It is critically endangered in Switzerland, Austria, the Czech Republic, and Germany. It is considered an extinct species in Romania. Its occurrence in Hungary is based on an erroneous report. The centres of its European range are the Polish lowlands, the Baltic region, and the marshy, swampy areas of Scandinavia. The plains of Eastern Europe are little known and almost unexplored, although there are many potential habitats. The study of the vast Asian territories of Russia has much to offer. With 21 figures.