In the left-bank Polesie of the Ukrainian SSR the flight of blood-sucking biting midges begins at the first half of May and completes at the end of September (they attack actively human beings and animals in the 3d ten-day ...

Data from literature and results of studies in the role of external factors for determination of birds reproduction periodicity are generalized. It is shown that the character of birds' reproduction dependence on environmental ...

Three new species of leaf-rollers are described in the paper: Clepsis altaiensis Kostjuk (a species which is close to the North American Clepsis moeschleriana Wck.). Selenodes helvomaculana Kostjuk from the Altai (externally ...

The data on the efficiency of sound transmission from various parts of a body to the inner ear are obtained for Hyla arborea L., Rana ridibunda Pall. and Bombina variegata L. Interspecific differences in sound transmission ...