This survey was conducted from January 2009 to October 2011. To catch moths, Wilkinson's traps were installed, in which 15W ultraviolet lamps were placed as attractants. Samples were collected on average twice a month within 3 localities with different plant associations, at the locality Vemeljski Dunavac there is a forest of ties and field ash, at the locality Pustara Tikveš there is a forest community of black and white poplar, and at the locality Tikveš there is a forest community of oak pedunculate and large jaundice. In the area of the Kopački rit Nature Park, at three localities: Tikveš, Vemeljski Dunavac, and Pustara Tikveš, 3832 individuals were collected and classified into 14 families. The most numerous families are Noctuidae with 86 species and Geometridae with 65 species. The largest number of individuals was collected at the Tikveš site (2219), followed by Pustara Tikveš (1103) and Vemeljski Dunavac (515). There are three dominant species in the Tikveš locality: Asteroscopus sphinx, Colocasia coryli, Lycia hirtaria and one eudominant Ptilophora plumigera. At the locality Vemeljski dunavac the dominant species are Ectropis crepuscularia, Lycia hirtaria, Spilosoma lubricipeda, and there are no eudominant species, at the locality Pustara Tikveš the only dominant species is Lycia hirtaria which is dominant at the other two locations, and the eudominant species is Ectropis crepuscularia. The highest biodiversity was found at the Vemeljski Dunavac site, where the value of the Simson index is 0.0330. The biodiversity of moths is high in all three localities according to the index values of the Simpson and ShannonWeiner.