Vestnik Zoologii

Volume 44, No. 4 (July-August, 2010)
abstracts

A New Species of the Genus Macrargus (Araneae, Linyphiidae, Micronetinae) from the North-East of Ukraine and Redescription of Two Related Species. Gnelitsa V. A., Koponen S. — Macrargus sumyensis Gnelitsa et Koponen, sp. n. is described from the North-East of Ukraine. Two closely related species of the genus Macrargus Dahl, 1886, Macrargus boreus Holm, 1968 and M. multesimus (O.-P. Cambridge, 1875), are redescribed and illustrated in detail.
Key words: Araneae, Linyphiidae, Micronetinae, Macrargus, Ukraine.

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New Records of Tortricid Moths (Lepidoptera, Tortricidae) from Ukraine. Kavurka V. V. — Five species of tortricid moths of the tribe Grapholitini are recorded from Ukraine for the first time: Cydia oxytropidis (Martini, 1912); Pammene ignorata Kuznetzov, 1968; Dichrorampha teichiana S6ulcs et Kerppola, 1997; Dichrorampha sylvicolana Heinemann, 1863 and Dichrorampha baixerasana Trematerra, 1991. Most of these species were collected in north-eastern regions of Ukraine.
Key words: Tortricidae, Grapholitini, Ukraine, new records.

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Terrestrial Mollusks (Gastropoda) of the Wood-and-Steppe in the Dnieper Area and their Confinement to Different Phytocenoses. Balashov I. A., Baidashnikov A. A. — 56 species of terrestrial mollusks were registered in the wood-and-steppe of the Dnieper area. Distribution of species among phytocenoses is discussed.
Key words: terrestrial mollusks, phytocenoses, wood-and-steppe, Dnieper area, Ukraine.

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Estimation of Divergence Rates for Upper Teeth in Closely Related Species Myotis blythii and M. myotis (Chiroptera, Vespertilionidae). Ghazali M. A., Dzeverin I. I. — Greater and lesser mouse-eared bats (Myotis blythii Tomes, 1857, M. myotis Borkhausen, 1797)are closely related species that diverged about one million years ago. Size of the vestigial structures of the toothrow (the third premolar and the third molar) and the proportion of the first and second molar areas from the total area of the studied teeth have not practically changed during that time. Other structures evolved with different rates. Using the Lynch’s method we prove that real rates of evolution are lesser than expected for the traits which were formed under the influence of solely random factors (mutations and random drift). Apparently, the stabilizing selection, was the principal factor of the evolution of the two species was stabilizing selection.
Key words: Myotis blythii oxygnathus, Myotis myotis myotis, teeth, teeth area, divergence, stabilizing selection.

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Formation of the Orbito-Temporal Region of Chondrocranium in Embryogenesis of the Sand Lizard, Lacerta agilis (Reptilia, Squamata). Kovtun M. F., Yarygin A. N. — Serial sections of 29 Lacerta agilis Linnaeus, 1758 embryos on the successive developmental stages, stained with hematoxylin-eosin or alcian blue-hematoxylin-eosin, were examined. It was found that trabecula cranii, acrochordal cartilage and pilae metopticae are the initial components of the orbito-temporal region of L. agilis scull. Taenia marginalis emerges first in embryogenesis and then taenia medialis forms. Frontal parts of taenia marginalis, that are the split-type structures, originate from planum supraseptale and their posterior parts originate from pilae accessoriae. Fenestra septalis forms due to thinning of the medial part of interorbital septum.
Key words: skull development, reptiles, orbito-temporal region, interorbital septum, taenia marginalis, taenia medialis, planum supraseptale, pilae metopticae, pilae accessoriae, pilae antoticae.

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Ontogenetic Variability of Linear Size and Body Proportions and Periodization of Postembryonic Maturity of the Sand Lizard Lacerta agilis (Reptilia, Squamata). Maliuk A. Yu. — Age variations by linear size and body proportions have been studied in population of the sand lizard (Lacerta agilis Linnaeus, 1758). It has been established, that not only linear body size increases, but also body proportions have a lot of changes. It is shown that four stages of maturity (juvenis, subadultus, adultus, adultus-senex) are well-defined by linear size, body proportions and reproductive organs in postembryonic development of this species.
Key words: Lacerta agilis, linear size, body proportions, ontogenetic variability, stage of maturity.

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Zoogeography of the Root Nematodes of the Suborders Hoplolaimina and Criconematina from Far East of Russia. Volkova T. V. — Twenty nine species of the root nematodes are recorded from Sakhalin Region. Cluster analyses shows that the Sakhalin nematode fauna is small similar with other Far East Russian regions. The fauna of this region is characterized by the predominance of Transpalearctic elements. Two species endemic to Sakhalin is known.
Key words: Hoplolaimina, Criconematina, zoogeography, Sakhalin Region.

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Ecological Spectrums of Heterotrophic Flagellates (Protista) in Water Bodies of Ukrainian Polissya Area. Shevchuk S. Yu., Dovgal I. V. — Dependence of 26 heterotrophic flagellate species development in central part of Ukrainian Polissya area from operating pH and concentrations of dissolved organic matter and oxygen in the waters is considered. Narrowing of existence spectrums in certain types of water body characteristic for some species of heterotrophic flagellates is stated; this peculiarity is strongly expressed in the bogs where specific complex of hydrochemical conditions to have a place.
Key words: heterotrophic flagellates, Ukraine, ecological spectrums, tolerance.

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Cercaria of the Trematode Plagiorchis mutations (Trematoda, Plagiorchiidae) from the Ponds Snails, Lymnaea stagnalis, in Ukraine. Zhytova O. P. — Morphological characteristics and measurements of Plagiorchis mutationis Panova, 1927 cercaria found for the first time in the intermediate host, pond snail Lymnaea stagnalis in Ukraine are given.
Key words: Lymnaea stagnalis, Plagiorchis mutationis, molluscs, cercaria.

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New Information on the Hosts and Distribution of the Marine Fish Leeches Trachelobdella lubrica and Pontobdella muricata (Clitellata, Hirudinida). O#ktener A., Utevsky S. Yu. — Fish leeches collected in the Aegean Sea, the Sea of Marmara and the Black Sea were examined. Trachelobdella lubrica (Grube, 1840) was recorded for the first time from the ballan wrasse Labrus bergylta (Osteichthyes, Labridae), marine bream Diplodus vulgaris (Osteichthyes, Sparidae) and the grouper Epinephelus aeneus (Osteichthyes, Serranidae) from aquiculture. The leeches of this species were found in the Aegean Sea and the Sea of Marmara on the body surface, in the mouth and gill cavities of their hosts. Leeches identified as Pontobdella muricata (Linnaeus, 1758) were collected from the thornback ray Raja clavata (Chondrichthyes, Rajidae) in the Black Sea.
Key words: Aegean Sea, Sea of Marmara, Black Sea, Annelida, Clitellata, Hirudinida, Piscicolidae, parasites.

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The First Nest Records of the Wasp Eumenes punctaticlypeus kostylevi (Hymenoptera, Vespidae, Eumeninae) and Notes on its Distribution in Crimea. Fateryga A. V., Matushkina N. A. — Two nest records of the rare solitary wasp Eumenes punctaticlypeus kostylevi Kurzenko, 1976 are described for the first time. One non-completed nest was built in a stone surface and another one was attached to a bush stem; the latter one consisted of six cells. Nest cells are arranged in a cluster and have common internal walls. All cells are spirally disposed around the stem and theirs collars look at different directions. A male was reared in the first cell and three females in the second to fourth cells. Examination of the collection materials revealed that the distribution area of the species in Crimea embraces zones of Foothills and South Coast.
Key words: Eumenes, Vespidae, Eumeninae, nesting, Crimea.

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