Sazhnev A. S. RussiaBorokPapanin Institute for Biology of Inland Waters, Russian Academy of Science, Borok, Nekouzsky District, Yaroslavl Oblast 152742, Russiasazh@list.ru Author's articles COMPOSITION AND STRUCTURE OF THE HETEROCERIDAE (COLEOPTERA) POPULATION IN THE SHORE ZONE OF WATER OBJECTS IN THE SARATOV REGION