Year 1991, No. 4 (July - August)

Fauna and Systematics

Baidashnikov A. A. On ihe Origin of Mollusks of the Genus Mentissa

Korniushin A. V. Distribution Patterns of the Pisidioid Mollusks (Bivalvia) in the Dnieper Drainage Area and the Problems of Zoogeographic Regionalization of the Territory

Tiunova Ň. M. A New Mayfly Species (Ephemeroptera, Heptagenidae) from Primorve Region (Far East USSR)

Perkovsky E. E. On the Contents of the Tribe Sogdini and Systematic Position of the Genus Deltocnemis (Coleoptera, Leiodidae)

Karasyov V. P. New Species of the Genus Tychius (Coleoptera, Curculionidae) from Transcaucasia and Middle Asia

Kostjuk I. Yu. New Geometrid Moth Taxa (Lepidoptera, Geometridae) from Central Asia

Korneyev V. A. Tephritid Fiies of the Genera Allied to Euleia (Diptera, Tephritidae) in the USSR. Communication 2

Pavlichenko P. G. A New Oribatid Mite Genus (Acari) from the Ukraine

Nankinov D. N. General Pattern of the Bittern Migrations in Europe

Zima J., Zagorodniuk I. V., Gaichenko V. A., Zhezherina Ň. O. Polymorphism and Chromosomal Variability in Microtus rossiaemeridionalis (Rodentiformes)


Dovgal I. V. Peculiarities of the Ciliophora Suctoria Biocoenotic Distribution in Water Bodies of the Right-Bank Ukrainian Polesye Area

Krasnoshchekov G. P., Tomilovskaya N. S. Gammarid Response to Homo- and Heterotransplantation of the Helminth Larvae

Komissar A. D. Honey Bee Thermal Preference in a Colony During Hibernation


Bogdanovich I. A. Adaptive Characters in Lagopus Birds (Tetraonidae) Terrestrial Locomotion Organs Structure

Short Communications

Mikhailova Ň. V. The Influence of Temperature on Development and Metamorphosis of Cerastoderma glaucus

Chernogorenko E. V. A Redescription of Cincinna chersonica (Gastropoda, Pectinibranchia)

Mamontova V. A. Remarks on the Paper of Yu. M. Rukavishnikov ŤAn Attempt of an Analysis by Karyological Method of Superspecific Taxa in Lachnidae Familyť

Ustiuzhanin P. Ya. A New Pterophorid Moth Species of the Genus Agdistis (Lepidoptera, Pterophoridae) from the Steppe Part of the West-Siberian Lowland