Maxim Nabozhenko

Bio: Maxim Nabozhenko is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Genus & Tribe (biology). The author has an hindex of 9, co-authored 92 publications receiving 435 citations. Previous affiliations of Maxim Nabozhenko include National Academy of Sciences of Ukraine & Southern Federal University.

Description of larva and pupa of the genus Deretus (Coleoptera: Tenebrionidae) with key to the larvae of the tribe Helopini *

Abstract: Larva and pupa of Deretus spinicollis Schawaller, 2004 are described and illustrated for the fi rst time. The systematic position of the genus Deretus Gahan, 1900 is discussed and an updated key to larvae for known Palaearctic genera within the tribe Helopini is given.

A Revision of the Genus Catomus Allard, 1876 and the Allied Genera (Coleoptera, Tenebrionidae) from the Caucasus, Middle Asia, and China

Abstract: The genus Catomus Allard and the allied genera of the fauna of Kazakhstan, Middle Asia, the Caucasus, and China are revised. The subgenus Stenomacidius Seidlitz, 1896 is synonymized with the genus Cylindronotus Faldermann, 1837. A new genus, Eustenomacidius gen. n., with the type species Helops luridus Menetries, 1848 is described. The following new combinations are proposed: Cylindronotus (s. str.) acutangulus (Seidlitz, 1896), Odocnemis anatolicus (Kaszab, 1961), Eustenomacidius hirtipennis (Seidlitz, 1896), Eustenomacidius turcmenicus (Medvedev, 1964), Eustenomacidius mongolicus (Kaszab, 1968), and Eustenomacidius wagnae (Ren, 1999). The following new subgenera are described: Montanocatomus, Sinocatomus (genus Catomus), and Caucasohelops (genus Eustenomacidius). The name Catomodontus Koch, 1935 is considered invalid. A new genus Xanthohelops closely related to Eustenomacidius is described from the Kara Kum Desert (Turkmenistan). The following new species and subspecies are described: Catomus (s. str.) noctivagus, C. (s. str.) indubitatus, C. (Montanocatomus) fabiani, C. (Sinocatomus) solitarius, Eustenomacidius (Caucasohelops) svetlanae with a new subspecies E. (Caucasohelops) svetlanae araxi subsp. n., Xanthohelops karakumicus Nabozhenko et Medvedev, spp. n. The following new synonyms are established: Cylindronotus Faldermann, 1837 = Stenomacidius Seidlitz, 1896; Eustenomacidius luridus (Menetries, 1848) = Stenomax laevicollis Kraatz, 1882, = Stenomax lucidicollis Kraatz, 1882, = Catomus (Stenomacidius) provocator Reitter, 1922; Catomus (Montanocatomus) reinigi (Schuster, 1931) = Catomus (Stenomacidius) alaensis G. Medvedev, 1970; Catomus fragilis (Menetries, 1848) = Catomus subniger Reitter, 1901; Catomus karakalensis G. Medvedev, 1964 = Catomus dolini G. Medvedev, 2004. Lectotypes are designated for the following species: Cylindronotus acutangulus (Seidlitz, 1896); Eustenomacidius hirtipennis (Seidlitz, 1896); Catomus fragilis (Menetries, 1848); Catomus reinigi (Schuster, 1931); Catomus provocator Reitter, 1922; Catomus subniger Reitter, 1901; Catomus niger (Kraatz, 1882) and Catomus antoniae Reitter, 1890. Morphological adaptations of species to particular environmental conditions, relationships of the new taxa and their positions in the tribe Helopini are considered. Keys to genera of the tribe Helopini of the Caucasus, Middle Asia, and Kazakhstan, and to subgenera and species of Catomus and Eustenomacidius of the Caucasus, Middle Asia, Kazakhstan, and China are given.

The Don River basin is a new stage of expansion of Potamopyrgus jenkinsi (Smith, 1889) (Gastropoda, Hydrobioidea) in Europe

Abstract: The role of invasions has been repeatedly discussed and elucidated in Russian and foreign literature [1‐4]. Problems related to invading species are especially acute in water bodies of arid zones, manly closed water bodies, such as the Caspian Sea, the Sea of Azov, and formerly the Aral Sea. The Sea of Azov and its catchment area are among the most vulnerable ecosystems. This is mainly because the sea is relatively (incompletely) isolated (a continental body of water) and has an unstable hydrological and hydrochemical regimen, which allows invaders with a potentially wide capacity for osmoregulation to adapt. This is entirely true for the catchment areas of the above seas (including the Don, Kuban’, Volga, Ural, Kuma, Syr-Darya, and smaller rivers). These rivers serve as a reserve of the Pontocaspian relict fauna, which is very sensitive to all environmental changes, including invasions. The expansion of invading species may be strikingly rapid. One example is the finding of Potamopyrgus jenkinsi in the Don basin in June and July of 2007. Potamopyrgus Stimson, 1865 was first found in Europe in the late 19th century (the species Potamopyrgus jenkinsi (Smith, 1889) described from the Themes mouth). During the 20th century, Potamopyrgus was found in many regions of Europe. The species composition of the genus Potamopyrgus in the area of invasion is still a matter of discussion. It has been hypothesized that all European Potamopyrgus belong to the same New Zealand species P. antipodarum (Gray, 1843), that there are several species in Europe [5], and that two discrete lineages (clones) have invaded Europe in different periods from different local populations of New Zealand [6, 7]. The existence of a number of European species (probably, pure parthenogenetic strains) of Potamopyrgus differing in ecology and salinity preferences that have no analogues in the New Zealand fauna, as well as some paleontological data, allowed Anistratenko [5] to hypothesize that they are autochthonous in Europe. Anistratenko regards ecologically different strains of Potamopyrgus as separate species P. jenkinsi ; P. alexenkoae Anistratenko in Anistratenko et Stadnichenko, 1995; and P. polistchuki Anistratenko, 1991. Molecular genetic studies on Potamopyrgus from some Western European habitats demonstrated the existence of two strains both genetically and morphologically differing from each other [6, 7]. They are assumed to have invaded from isolated habitats on the North Island of New Zealand in different periods of time. Potamopyrgus may also form new pure strains or species in the area of invasion (saltatory speciation, which is possible for clonal invading species) [8].

New genus and species of the tribe opatrini (coleoptera, tenebrionidae, tenebrioninae) from the lowermost eocene amber of paris basin

Abstract: Eupachypterus eocenicus gen. and sp. nov. from the Lowermost French Eocene Amber is described. The genus is most similar to the genera Neopachypterus and Pseudolamus from the tribe Opatrini by the shape of trochanters, but differs in the large eyes, presence of a row of spines along protibiae, very long spurs of protibiae (about as long as tarsomere 3), narrow subcylindrical apical maxillary palpomere, shape of apical labial palpomere and acute apex of penis trunk.

A new species

Abstract: We redescribe the only previously known species of Myrsidea from bulbuls, M. pycnonoti Eichler. Sixteen new species are described; they and their type hosts are: M. phillipsi ex Pycnonotus goiavier goiavier (Scopoli), M. gieferi ex P. goiavier suluensis Mearns, M. kulpai ex P. flavescens Blyth, M. finlaysoni ex P. finlaysoni Strickland, M. kathleenae ex P. cafer (L.), M. warwicki ex Ixos philippinus (J. R. Forster), M. mcclurei ex Microscelis amaurotis (Temminck), M. zeylanici ex P. zeylanicus (Gmelin), M. plumosi ex P. plumosus Blyth, M. eutiloti ex P. eutilotus (Jardine and Selby), M. adamsae ex P. urostictus (Salvadori), M. ochracei ex Criniger ochraceus F. Moore, M. borbonici ex Hypsipetes borbonicus (J. R. Forster), M. johnsoni ex P. atriceps (Temminck), M. palmai ex C. ochraceus, and M. claytoni ex P. eutilotus. A key is provided for the identification of these 17 species.

The peril of dating beetles

Abstract: Recently, McKenna et al., 2015 (MCK15 hereafter) investigated the higher level phylogenetic relationships of beetles (Insecta, Coleoptera) using the most comprehensive molecular dataset to date, and inferred the absolute ages of major groups using multiple fossil calibrations across the beetle tree of life. Based on the result of their dating analysis, beetles diverged from Strepsiptera in the Early Permian c. 278.33 Ma with a 95% credibility interval (95% CI) of 288.28 to 271.89 Ma, and the crown age of Coleoptera was estimated for the Late Permian c. 252.89 Ma (95% CI: 267.68 to 238.78 Ma), supporting the view that beetles originated before and survived through the End-Permian Mass Extinction that occurred c. 252 Ma (Shen et al., 2011). However, some of the age estimates found in MCK15 are in conflict with current knowledge of the beetle fossil record (e.g. Nikolajev & Ren, 2010; Pan et al., 2011, Prokin & Ren, 2011; Fikáček et al., 2012a; Wang et al., 2013, 2014; Cai et al., 2014b, 2015a; Kirejtshuk et al., 2014; Boucher et al., 2016) and with other recently published molecular age estimates for some major beetle clades (e.g. Zhang & Zhou, 2013; Ahrens et al., 2014; Bloom et al., 2014; Kergoat et al., 2014; Kim & Farrell, 2015; Bocák et al., 2016; Gunter et al., 2016). In some cases, the difference in age estimates is significant and might change our understanding of the mode and tempo of diversification dynamics of these groups. Based on a careful examination of the data and analyses performed in MCK15, we propose that the divergence time estimates which they found are likely to underestimate clade ages. We believe this is due to the subset of fossil Coleoptera that MCK15 selected as calibration points, as well as the methodological approach used in their analyses. To explore the impact of fossil selection on the age of Coleoptera, we derived an alternative set of fossil calibration points based on best-practice recommendations (e.g. Parham et al., 2012),

The exotic aquatic mud snail Potamopyrgus antipodarum (Hydrobiidae, Mollusca): state of the art of a worldwide invasion.

Abstract: Biological invasions represent a relevant ecological and economic problem of our globalized world. While a few species have been classified as invasive due to their ecological and economic impacts on the invaded ecosystems (e.g., zebra mussel), others show contrasting invasive potential, depending on the invaded ecosystem and/or the traits of the exotic species. This paper reviews the worldwide distribution, ecological impacts and the reasons that explain the invasive success of the aquatic mud snail Potamopyrgus antipodarum Gray (Hydrobiidae, Mollusca), which is native to New Zealand. This review shows that most studies on P. antipodarum distribution have been conducted in Europe, North America and Australia, and few studies in Asia. The distribution of this snail is still unknown in other parts of the world (e.g., Africa, South and Central America). The range of invaded aquatic ecosystems varies from fresh to salt water and from lentic to lotic ecosystems. The ecological impact of this species is due to the fast population growth rate and to the extremely high densities that it can reach, leading to altered C and N cycles in invaded ecosystems. However, at low densities mud snails have been shown to enhance secondary production. Additionally, P. antipodarum has been found to overcome the negative effects of predators and parasites (e.g., it survives the pass through the digestive tracts of fish). This review contributes to assess the magnitude and ecological risk of P. antipodarum invasion throughout the world.