O. Merkl szerk.: Folia Entomologica Hungarica 66. (Budapest, 2005)

RESULTS During the trapping periods, the trap captured a total of 24,352 specimens of Macrolepidoptera; 12,849 in 2000, and 11,503 in 2001. Owing to the competent operation of the trap, the captured material was of very good quality, and all the specimens were identified (except for some Eupithecia species). During the years 2000 and 2001, the trap caught 448 species; 310 of them were identical in the two years, and 138 were different between the two studied years. That material was supplemented by additional 55 species caught with lamp. The total number of species thus caught amounted to 503, which demonstrated the fact that the area was extremely rich in species. Quantitative analysis showed that, of the 377 species caught with light trap in 2000, 22 were represented by more than 1% (129 specimens), see Table 1. Of the 377 species, 157 were represented by 10 to 100 specimens, 117 species by 1 to 10 specimens, and 71 species by a single specimen each. There was only a single species, Orthosia cerasi, that was represented by over 5%, but its share did not exceed 10%. In 2001, 378 Macrolepidoptera species were captured with light trap, 23 of which were represented by more than 1 % ( 116 specimens), see Table 1. Of the 378 species trapped in 2001, 148 species were represented by 10 to 100 specimens, 150 by 1 to 10 specimens, and 52 by a single specimen each. In 2001, it was Tholera cespitis that was represented by more than 5%, and like in 2000, none of the species exceeded 10%. Unlike in 2000, neither AIsophila aescularia [DENIS et SCHIFFERMÜLLER, 17751, nor Lycia hirtaria (CLERCK, 1759) reached 1% in 2001, because their most swarming period was in February due to the early thaw. We found a 80% similarity in the composition of species between the two study years. At the same time, similarity in the abundances was smaller. The Bray-Curtis (Czekanowski) similarity was only 60%, which means that the two years differ remarkably in abundances of the trapped species. Table 2 shows the number of specimens caught each month in 2000 and 2001 against monthly average temperatures and total precipitation. The results of collection with light trap and lamp in the Tohonya valley in 2000-2001 show that Geometridae and Noctuidae are represented by the greatest number of species and specimens in the study area, but certain species of Arctiidae, Sphingidae and Lasiocampidae also occur in large numbers, e.g. Eilema complana (LINNAEUS, 1758), Deilephila porcellus (LINNAEUS, 1758), and Poeciliocampa populi (LINNAEUS, 1758), see Table 3. Woodland species (VARGA 1964) were trapped in the greatest numbers, as woodland predominates in the region and in the vicinity of the light trap, as well. In