Year 1991, No. 2 (March - April)

Fauna and Systematlcs

Tkach V. V. Cestodes of the Genus Triodontolepis (Cestoda, Hymenolepididae) of the Ukraine, with Description of T. torrentis Cysticercoid

Anistratenko V. V., Baidashnikov A. A. Evolutionary Significance of the Coiling Inversion in Mollusks

Kluge N. Yu. Mayflies of the Genus Brachycercus (Ephemeroptera, Caenidae) of the USSR Fauna

Lopatin I. K. Description of New Species of the Genus Pachybrachis (Coleoptera, Chrysomelidae) of the Palearctic Fauna, with Synonymic Notes

Mamaev B. M., Berest Z. L. New Species of Cecidomyiid Flies of the Genera Heterogenella and Skuhraviana (Diptera, Cecidomyiidae) from Carpathians and Transcarpathia


Kolodochka L. A., Pogrebnyak S. G. The Influence of Temperature and Humidity on Hatching in Three Plant Dwelling Mite Species

Mokrushov P. A. Visual Stimuli in Behaviour of Dragonflies. Communication 4. Recognition of Immobile Conspecific Individuals in Lestes Dragonflies

Lugovoi A. E. On Seasonal Trophic-Ecological Rhythms in Bird Population Structure (Examplified by Janowski Staw Lake, Lvov Area)


Podgornova G. P., Aluart De La Cruz M., Dmitrieva . I., Lomakin V. V., Timofeev P. V., Sharpilo V. P. Karyotype Evolution in the Nematode Superfamilies Trichostrongyloidea and Strongyloidea

Koshovsky A. A. Comparative Morphology of Circulatory System in Some Scombroidei Fishes

Nechaeva S. V., Veselovsky M. V., Gilevich S. A., Gulo V. L. Peripheric Centres of Neural regulation in Dolphins

Short Communications

Kovalchuk A. A., Kovalchuk N. E. A New Copepodan Species (Harpacticoida) from the Ukrainian Carpathians

Van Oorschot H., Van Den Brink H. Notes on Some Rare and Little-Known Butterflies of Turkey (Lepidoptera, Satyridae, Lycaenidae)

Puchkov A. V., Nesterov M. A. On Some Rare and Protected Species of the Carabidae (Coleoptera) of Sakhalin Island

Pavlichenko P. G. Variability of Some Taxonomic Characters in Trichoribates trimaculatus (Oribatei, Ceratozetidae)

Manylo V. V., Golubev M. L., Sattorov T. The Karyotype of Phrynocephalus helioscopus saidalievi (Sauria, Agamidae) of the Ferghana Valley


Bodnarchuk L. I., Shalimov I. I., Olifir V. N., Vladimirsky A. A. A Commercial Modification of Leaf-Cutter Bees Incubator