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 ...

When studying the Eremias velox samplings from different regions of the species area of distribution it is determined that there are both clinal and discrete variability according to colour, pattern and characters of ...

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 ...

In the gill cavity of Astacus leptodactylus leptodactylus from the water bodies of the Dnieper and Southern Bug basins Oligochaeta are found which are referred to the new species of the family Aeolosomalidae - Aeolosoma ...