Soldatenko E.V.; Shatrov A.B.; Petrov A.A.; Sitnikova T.Ya.;
Keywords
spermatozoa; sperm morphology; taxonomy; freshwater pulmonates; phylogenetic relationships;
Pages
pp. 161 -
170

The taxonomic position of the genus Culmenella within Hygrophila remains uncertain. The spermatozoa of Culmenella rezvoji, a species from the Far East of Russia, were examined using a combination of light, scanning and transmission electron microscopy with the objective to assess the utility of sperm characters for clarifying the phylogenetic relationships of the genus. The spermatozoa of C. rezvoji are divided into four regions: head, midpiece, glycogen piece and endpiece. The head contains a slender, cone-shaped acrosome and a conical nucleus with a sinistrally coiled keel. The acrosome consists of an apical vesicle and a thick-walled pedestal with an electron lucent canal partially filled with a patchy electron-dense material. The midpiece contains the mitochondrial derivative that encloses apically three parallel glycogen-filled tracts (helices) positioned in such a way that in the sperm cross section two helices lie opposite each other and equidistant from the third helix. The surface of the sperm above one of the helices forms a high, narrow ridge; the ridges above the remaining two helices have a much lower profile. The boundary between the midpiece and glycogen piece is demarcated by a constriction (annulus) consisting of an anterior electron-dense ring and a posterior conical cylinder connected to the ring with thin filaments. The structure of spermatozoa in Culmenella is consistent with the general pattern of sperm morphology common to all studied species of Hygrophila, but the spermatozoa of Culmenella also have distinctive characters (three glycogen helices and high-profile surface ridge in the apical portion of the midpiece) that should be potentially useful in resolving the taxonomic position of this genus.

Ультраструктура сперматозоидов Culmenella rezvoji (Lindholm, 1929) (Gastropoda: Hygrophila)
Солдатенко Е.В.; Шатров А.Б.; Петров А.А.; Ситникова Т.Я. ;
Pages
pp. 171 -
179

This paper provides reliable data on the occurrence of bivalve mollusk Neaeromya compressa in the Sea of Japan. Nine alive specimens (L = 5.919.2 мм) were collected in June 2003 in Peter the Great Bay (southern Primorye) at the depths of 6674 m on mud and sand. These are illustrated and described in detail. The data on ecology and geographical range of the species are summarized.

Достоверные находки двустворчатого моллюска Neaeromya compressa (Dall, 1899) (Lasaeidae) в Японском море
Колпаков Е.В.; Надточий В.А. ;
Keywords
radula; Boucardicus; Alycaeinae; Madagascar;
Pages
pp. 181 -
184

The SEM image and description of the Boucardicus leopardus radula is presented for the first time. The radula appeared morphologically similar to those of representatives of Alycaeidae. At the same time representatives of Boucardicus differ significantly from South-East Asian Alycaeidae. It is suggested, that presently Boucardicus is not monophyletic and includes representatives of different genera and possibly families.

Замечания о радуле Boucardicus leopardus Emberton, 2002 (Gastropoda: Cyclophoroidea: Alycaeidae) и систематическом положении рода Boucardicus Fischer-Piette et Bedoucha, 1965
Егоров Р. ;
Keywords
Phaedusinae; taxonomy; zoogeography; Southeast Asia;
Pages
pp. 185 -
189

Oospira haivanensis sp. nov, a new member of the Clausiliidae subfamily Phaedusinae is described from the Hai Van Mountain in central Vietnam. The relationship of the new species to other taxa of the genus and  the zoogeographical importance of Oospira species in Southeast Asia are discussed.

Новый вид рода Oospira Blanford, 1872 (Gastropoda, Pulmonata, Clausiliidae) из центрального Вьетнама
Буи Т.Ш.; Секереш М;
Keywords
conchological measurements; population phenofund; terrestrial mollusk; landscapes of Eastern Europe;
Pages
pp. 191 -
204

The population structure of the terrestrial mollusk Fruticicola fruticum (Gastropoda, Pulmonata, Bradybaenidae) in different landscapes of Eastern Europe on the basis of conchological measurements, including morphometric parameters and color variants was studied. For all morphometric parameters used, statistically significant differences were found between the studied populations. At the same time, the shell size are determined not by zonal characteristics, but by microbiotopic conditions. Changes in the frequency of shell phenotypes in Fr. fruticum populations are probably of a multifactorial nature. The ratio of different color variants can be caused by the influence of radiation, cyclic fluctuations of climatic factors, succession changes in biotopes, and gene drift.

Географическая и хронологическая изменчивость конхиологических признаков моллюска Fruticicola fruticum (O.F.Müller, 1774) (Gastropoda; Pulmonata; Bradybaenidae) на территории Восточной Европы
Снегин Э.А.; Снегина Е.А.;
Pages
pp. 1 -
10

Two new species of the genus Callochiton are described: C. sonchaensis sp. nov. from Vietnam and C. tongaensis sp. nov. from Tonga. They differ from other congeneric species in having a different number, shape, size and arrangement of grooves on the pleural areas of the intermediate and tail valves, the number of slits, the size of the dorsal spicules, and sometimes the coloration of the girdle. Absence of Callochiton in the Caribbean Sea and along the coasts of Central and North Americas was, perhaps, due to late advancement of species from this genus into the Tethys from the regions near Gondwana.

Описание двух новых видов Callochiton (Mollusca: Polyplacophora) из Вьетнама и Тонга
Сиренко Б.И.;
Keywords
Gastropoda; infauna; paleogeography; paleoecology; marine sedimentary rocks; Tavda formation;
Pages
pp. 11 -
17

The present work is one of several planned articles on updating information on the biodiversity of malacofauna and palaeogeography of the Middle-Late Eocen Tavda Sea, which existed in the Western Siberia. Paper contains data on fossil species diversity of the family Naticidae of the Middle and Late Eocene West Siberian Sea and on drill holes. The drill holes indicate predator activity, prey of Naticidae and influence of abiotic factors on their behavior. Previously the invertebrate macro-fauna of the Eocene of Western Siberia was not studied. As a result, the biodiversity, paleogeography and paleoecology remained incompletely studied. This requires additional collecting, generalization and systematization of paleontological material.

Представители семейства Naticidae тавдинской свиты (эоцен, Западная Сибирь)
Трубин Я.С.;
Keywords
new species record; Moelleria costulata; Spiromoelleria quadrae; Spiromoelleria maculata;
Pages
pp. 19 -
25

Two species of the subfamily Moelleriinae Hickman et McLean, 1990 – Moelleria costulata (Møller, 1842) and Spiromoelleria quadrae (Dall, 1897) – have been reported from the northwestern Pacific so far. The present paper clarifies their distribution in the region based on the museum collections and newly obtained material from the northwestern Pacific. Also, one more species, Spiromoelleria maculata (Golikov et Gulbin, 1978), which previously had been considered as a member of the genus Homalopoma Carpenter, 1864 (subfamily Coloniinae), is here suggested to be a member of Moelleriinae.

К видовому составу подсемейства Moelleriinae Hickman et McLean, 1990 (Mollusca: Gastropoda) в северо-западной Пацифике
Сиренко Б.И.; Меркульев А.В.; Кроль Е.Н.; Данилин Д.Д.; Нехаев И.О.;
Pages
pp. 27 -
31

New habitats of Lymnaea (Stagnicola) saridalensis Mozley, 1934 were discovered in the former riverbed reservoirs of the basins of the Khopor and Sura rivers in the Volga Upland (Penza region). The parameters of the shell and the indices of the copulative apparatus (ICA), which is used for distinguishing species, were determined. Studied populations were characterized by a significant variability of ICA (0.183 ± 0.01 and 0.276 ± 0.012).

Новые данные о распространении прудовика Lymnaea (Stagnicola) saridalensis Mozley, 1934
Стойко Т.Г.; Сенкевич В.А.; Кадомцева А.С. ;
Pages
pp. 33 -
38

New habitats of Lymnaea (Stagnicola) saridalensis Mozley, 1934 were discovered in the former riverbed reservoirs of the basins of the Khopor and Sura rivers in the Volga Upland (Penza region). The parameters of the shell and the indices of the copulative apparatus (ICA), which is used for distinguishing species, were determined. Studied populations were characterized by a significant variability of ICA (0.183 ± 0.01 and 0.276 ± 0.012).

Морфологические и оптические свойства и эволюционные изменения хрусталиков глаз наземных брюхоногих моллюсков (Pulmonata, Stylommatophora)
Шепелева И.П. ;
Pages
pp. 39 -
42

Gibbinae subfamily in the Mauritius Island is represented by four taxa of generic rank. The anatomy of the type species of three of them has been known previously. The description of the reproductive tract of the fourth – Plicadomus sulcatus (Müller, 1774) is presented. It is shown that under striking conchological differences the anatomy of members of all four taxa is very similar and differs in quantitative characters only (the ratio of the length of the separate elements: the vagina / free oviduct and the relative length of the penis.). On the basis of this fact it was concluded that Mauritian Gibbinae is represented by a single genus Gibbus Montfort, 1810 with four subgenera (Gonospira Swainson, 1840, Plicadomus Swainson 1840, Gonidomus Swainson, 1840, and Gibbus s. str.).

Анатомия Plicadomus sulcatus и таксономическая структура маврикийских Gibbinae (Gastropoda, Pulmonata, Streptaxidae)
Шилейко A.A.;
Keywords
terrestrial molluscs; Gastropoda; Pulmonata;
Pages
pp. 43 -
45

Large population of Caucasian mollusc Harmozica ravergiensis was found in the Gvozdiv village in Kyiv region. There were no reports of this species from Central Ukraine before now and this locality is most northwestern for it. Population was monitored during the 2015-2017 and evidently survived two winters on the open grounds in this period. Shell and reproductive anatomy of H. ravergiensis from Gvozdiv are described and illustrated. The presence of the species in area is discussed. Moreover, another new finding of H. ravergiensis is reported: in Petrykivka village (Dnipropetrovsk region, Southern Ukraine) in 2016.

Первая находка инвазивной кавказской наземной улитки Harmozica ravergiensis в Центральной Украине (Stylommatophora, Hygromiidae)
Балашов И.; Швидкая З.; Василюк А.; Марущак А.; Ширяева Д.; Оскирко А. ;
Keywords
COI; exon-capture; new species; new genus;
Pages
pp. 47 -
82

In the course of preparation of a new molecular phylogeny of Conoidea based on exon-capture some new species and species with notable morphology were revealed. The taxonomy of these species is discussed and the radula of most of them illustrated for the first time. New genera are described: Comispira gen. nov. (Cochlespiridae), type species Leucosyrinx mai Li et Li, 2008; Pagodaturris gen. nov. (Clavatulidae), type species Pleurotoma molengraaffi Tesch, 1915. New species: Comispira compta gen. et sp. nov., Sibogasyrinx sangeri sp. nov. (both Cochlespiridae), Pagodaturris philippinensis gen. et sp. nov. (Clavatulidae), Horaiclavus micans sp. nov., Iwaoa invenusta sp. nov. (both Horaiclavidae), Lucerapex cracens sp. nov., Lucerapex laevicarinatus sp. nov. (Turridae), Heteroturris kanacospira sp. nov. (Borsoniidae). Epideira Hedley, 1918 reallocated from Pseudomelatomidae to Horaiclavidae The radulae of Kuroshioturris nipponica (Shuto, 1961) (Turridae), Leucosyrinx verrillii (Dall, 1881), Leucosyrinx luzonica (Powell, 1969), comb. nov. are illustrated for the first time.

Новые и необычные глубоководные Conoidea, ревизованные на основании строения раковины, радулы и ДНК
Кантор Ю.И.; Федосов А.Э.; Пулляндр Н. ;
Keywords
gastropods; egg cases; Okhotsk Sea;
Pages
pp. 83 -
86

Eleven egg cases of Beringius marshalli (Dall, 1919) (Gastropoda: Buccinidae: Beringiinae) were found in the north part of Okhotsk Sea. Egg cases consist of 2-7 rounded capsules. Largest capsule has 54 mm in height and 31 mm in thickness. Capsule contains 2-3 embryos and numerous nurse eggs. Some egg capsules contained 2-3 young specimens (height 15.8, diameter 7.1 mm), which have well-developed calcareous shells.

Кладки и яйцевые капсулы брюхоногого моллюска Beringius marshalli (Dall, 1919) (Gastropoda: Buccinidae: Beringiinae)
Гульбин В.В. ;
Keywords
sexual dimorphism; variation; Yakutia;
Pages
pp. 87 -
90

The findings of the freshwater snail Boreoelona ehrmanni endemic to the Far East from the waterbodies of Yakutsk City are described. It is shown on the basis of dissections of snails and morphometric study of their shells that there are no statistically significant differences between the males and females of B. ehrmanni.

Находки Boreoelona ehrmanni Prozorova et Starobogatov, 1991 (Bithyniidae, Gastropoda, Mollusca) в водоемах города Якутска
Андреева С. И.; Андреев Н. И. ;
Keywords
land snails; slugs; invasive species; Chondrula; Helicopsis; steppe zone; Ukraine;
Pages
pp. 101 -
112

37 species of the land molluscs were identified in the material collected in 2002-2017,  many being earlier unknown from Zaporozhye region. In total 39 species of molluscs can be considered as reliably recorded from this region. The presence of some species is the result of anthropochory. This concerns first of all those land snails which have spread from the Crimea: Brephulopsis bidens, B. cylindrica, Phenacolimax annularis, Oxychilus deilus, Monacha fruticola, Xeropicta derbentina, X. krynickii, Eobania vermiculata, Helix lucorum. One species (Xerolenta obvia) was introduced to Zaporozhye region from the western part of Ukraine. The data obtained made it possible to clarify the current distribution of Helicopsis retowskii and Chondrula tridens martynovi over the territory of Ukraine.

Видовой состав наземных моллюсков Запорожской области и влияние на него антропохории
Гураль-Сверлова Н. В.; Бусел В. А.; Гураль Р. И. ;
Pages
pp. 113 -
118

A comparative analysis of the camera eyes of gastropod pulmonate molluscs Cepaea nemoralis and Cepaea hortensis was carried out on the basis of original and published data. It was demonstrated that the eyeballs and their main components in C. nemoralis and C. hortensis have more similarities in morphological and optical properties than in anatomical parameters.

Сравнительный анализ камерных глаз брюхоногих легочных моллюсков Cepaea nemoralis (Linnaeus, 1758) и Cepaea hortensis (Müller, 1774) (Stylommatophora, Helicidae)
Шепелева И.П.;
Pages
pp. 119 -
124
Находка регионально редкого вида моллюсков Marstoniopsis insubrica (Gastropoda: Amnicolidae) в реке Ольшанка и его охранный статус в Украине
Анистратенко В.В.; Анистратенко О.Ю. ;
Pages
pp. 125 -
129
Falsiplecta integripedia gen. et sp. nov. из Вьетнама (Gastropoda, Pulmonata, Helicarionidae)
Шилейко А.; Семенюк И. ;
Keywords
land molluscs; steppe zone; species diversity; chorology;
Pages
pp. 131 -
138

At the end of the XX – beginning of the XXI century 85 species of the land molluscs of 49 genera and 25 families were reliably registered in the steppe zone of Ukraine. The highest species richness was recorded in the northern steppe subzone (79 species). The main centers of the species diversity are the Donetsk Upland (65% of the total number of species) and the western part of the Black Sea Lowland with the southern spurs of the Podolian Upland adjoining it (55%). The modern composition of the land molluscs fauna of the steppe zone is influenced by the proximity of the Caucasus (for the southeast of Ukraine), the Podolian Upland (for the North-Western Black Sea coast) and the Crimea (for the entire investigated territory). Anthropochory plays an important role in the formation of the land molluscs complexes in the steppe zone of Ukraine.

Пространственное распределение наземной малакофауны степной зоны Украины
Гураль-Сверлова Н.В. ;