On the Persistence of Populations of Three Adventive Species of the Weevil Genus Otiorhynchus Germ. (Coleoptera,Curculionidae: Entiminiae) on Lilacs (Syringa L.) in St. Petersburg in 2018

Entomological Review - In 2018, all the three species of the weevil genus Otiorhynchus Germ.: O. albidus Stierlin, O. asphaltinus Germar, and O. rotundus Marseul, first recorded from St. Petersburg...     

On a Finding of the Polyphagous Pest,Coffee Bean Weevil Araecerus fasciculatus (DeG.) (Coleoptera,Anthribidae), in Natural Habitats of Different Regions of Southern Russia

Entomological Review - One specimen of the coffee bean weevil, Araecerus fasciculatus (DeGeer), was found in the region of Sochi on the Black Sea Coast of Krasnodar Territory. In the recent decade...     

Record of the second species of the East Asian seed-beetle genus <Emphasis Type="Italic">Megabruchidius</Emphasis> Borowiec (Coleoptera,Bruchidae) in the <Emphasis Type="Italic">Gleditsia</Emphasis> seeds in Krasnodar and Stavropol territories,Russia

Megabruchidius dorsalis (Fåhraeus), an introduced Eastern Asian seed beetle, was reared from Gleditsia triacanthos pods collected in Krasnodar and Stavropol territories in October 2013. The species has become established in several European countries since 1989 and is for the first time recorded from Russia.     

Genetic distinctness of parthenogenetic forms of European Polydrusus weevils of the subgenus Scythodrusus

Abstract Among eight species of Polydrusus weevils which belong to subgenus Scythodrusus, at least two possess parthenogenetic forms: P. (S.) inustus and P. (S.) pilifer. Both of these species consist of dioecious populations in the Caspian area and of parthenogenetic populations in Eastern Europe (P. (S.) inustus), the Caucasus region (both species) and Middle Asia (P. (S.) pilifer). The origin of parthenogenesis in this subgenus is unresolved; however some data suggest that the parthenogenetic forms are of hybrid ancestry. The genetic distinctness of parthenogenetic Scythodrusus was assessed on the basis of COII, ITS2, EF1‐α and Wolbachiawsp, 16S ribosomal DNA, ftsZ and hcpA sequence comparisons. Both taxa turned out to be monophyletic for all markers, which is an evidence against hybridization of their dioecious ancestors. On the other hand, a high frequency of heterozygous P. (S.) inustus females suggests an origin resulting from hybridization between genetically distinct dioecious representatives of this species. Very similar strains of Wolbachia supergroup A were found in both species, indicating that they have been either inherited from a common ancestor or were transmitted between parthenogenetic Scythodrusus weevils and probably spread randomly across their ranges.     

New data on the distribution and host plants of weevils (Coleoptera,Curculionoidea: Apionidae,Curculionidae) in the south of Baikal Siberia and in Mongolia

Two weevil species, Rhinoncus autumnalis Korotyaev, 1980 and Orchestes medvedevi (Korotyaev, 1995), comb. n. (from Rhynchaenus), both described from Mongolia, are recorded from Russia (Buryatia) for the first time. A key to five Orchestes species associated with elms in Eastern Siberia, the Russian Far East, and Mongolia is provided. Aizobius sedi (Germar, 1818) is recorded for the first time from Eastern Siberia based on the recent findings in Buryatia and on older collections from Tuva where it is associated with Orostachys spinosa (L.) C.A. Mey. (Crassulaceae); it is also recorded for the first time from Kyrgyzstan and Mongolia. Magdalis (Aika) margaritae Barrios, 1984, native of Mongolia, Northern China and the south of the Russian Far East, is recorded from Buryatia. Lixus (Broconius) korotyaevi Ter-Minassian, 1989, formerly known in Russia only from southern Tuva, is recorded from Buryatia where it was collected on Suaeda ?prostrata Pallas, which is the first known host of this species. Rhamphus ?oxyacanthae (Marsham, 1802) is reported from Buryatia where it was collected from Cotoneaster melanocarpa, and from Mongolia.     

New data on the changes in the abundance and distribution of several species of beetles (Coleoptera) in European Russia and the Caucasus

Changes in the abundance and distribution of selected species of beetles in European Russia and in the Caucasus are reported. Most of these species have been recorded from the Northwestern Caucasus in the last 10–15 years. The abundance and distribution during the last two years have changed most sharply in the introduced species, the Harlequin lady beetle Harmonia axyridis and two East Asian bruchids, Megabruchidius dorsalis and M. tonkineus. In 2016, the latter has been found in Georgia for the first time, and Harmonia axyridis was found in St. Petersburg. Abundance of the weevil Alcidodes karelinii with the range situated mostly east of the Caucasus and Volga River remains in Northwestern Caucasus at about the previous level. The flea-weevil species, a leaf miner on Ulmus pumila, misidentified previously as Orchestes mutabilis, is described in this paper as Orchestes steppensis sp. n. based on the material from Russia, Kazakhstan, Mongolia and Northern China; no its further distribution westward in 2015–2016 has been found. This species, rapidly widening its range in North America in the recent decade, is misidentified there as Orchestes alni. A key for differentiation of Orchestes alni, O. mutabilis and O. steppensis sp. n. is provided with photographs of adults of all three species. Magdalis armigera has increased abundance in Northwestern Caucasus in 2016 and was for the first time found in Northwestern Russia (Pskov Province) in 2015. Regular faunistic surveys during several decades provide a possibility of recording considerable changes in the abundance of some common species of Coleoptera, often associated with changes in their distribution.     

On the distribution of the weevil <Emphasis Type="Italic">Lixus subtilis</Emphasis> Boheman, 1835 (Coleoptera,Curculionidae: Lixinae)

Data on the distribution and host plants of Lixus (Phillixus) subtilis Boh. are given with a brief sketch of its bionomics and a distribution map.     

The First Record of an Invasive Nearctic Weevil Sphenophorus placidus vestitus Chittenden (Coleoptera,Dryophthoridae) from Greece

Entomological Review - In September 2018, a Nearctic weevil, Sphenophorus placidus vestitus Chittenden, recently introduced in the Western Mediterranean, was first found on Corfu Island, Greece.     

New Data on the Distribution of the Flea-Weevil <Emphasis Type="Italic">Orchestes steppensis</Emphasis> Kor. (Coleoptera,Curculionidae: Rhamphini) in European Russia

An elm flea-weevil Orchestes steppensis Korotyaev, 2016 was found on Ulmus pumila L. in the southeastern corner of Voronezh Province; formerly the westernmost records of this species in European Russia were those in Saratov Province and at the western boundary of Stavropol Territory. New data on the distribution of this and allied species in European Russia are reported.