Species composition of mosquitoes (Diptera, Culicinae) was investigated in 2000 year. The mosquitoes were caugh from april till october, twice a month, at 6 stations. Seven specics from genus Aedes were found: A. beclemishevi, A. ciprinus, A. cantans, A. flavescens, A. communis A. punctor, and A. vexans. A. cantans was most numerous (32,4). From genus Culex only one soecies was found (Culex pipiens). Furthermoce, Mansonia richardii and Culiseta annulata were caugh. The agresiveness toward men showed by mosquitoes was highest in august.
New faunistic data on leaf-mining species of Lepidoptera from central Poland are provided. Eight species are new for Lodz province: Stigmella alnetella, Tischeria decidua, Caloptilia betulicola, Leucospilapteryx omissella, Phyllonorycter issikii, Phyllonorycter platani, Phyllonorycter robiniella, Leucoptera malifoliella.