Yakovlev Sergey Albertovich RussiaSaratovRussian Research Anti-Plague Institute "Microbe", 46, Universitetskaya Str., Saratov, 410005, Russiarusrapi@microbe.ru Author's articles Spatial Structure of Spermophilus Pygmaeus Pallas, 1778 Settlements Found in the Territory of the North-Western Caspian-Sea Region Mosquitos (Diptera; Culicidae) of the Saratov Region Arthropods – Inhabitants of Burrows of the Sand Martin Riparia riparia (Linnaeus, 1758) (Aves: Hirundinidae) on the Territory of the Saratov Province Winter months’ temperature rises effect on duration of phenological phases for Spermophilus pygmaeus Pallas, 1778 populations located in Caspian depression (Astrakhan oblast)