Harvestmen (Arachnida: Opiliones) from the yew and box-tree grove of the Caucasian State Natural Biospheric Reserve, Russia

Faunistic and taxonomic data on the harvestmen from the yew and box-tree grove (Caucasian State Natural Biospheric Reserve, Russia) are presented. 16 harvestmen species from 5 families were found in this Reserve. Four new species (Calathocratus hirsutus Snegovaya, sp. n., Calathocratus minutus Snegovaya, sp. n., Giljarovia kratochvili Snegovaya, sp. n., Caucnemastoma martensi Snegovaya, sp. n.) are describe

New data on taxonomy, biology and distribution of weevils of the subgenus Pliadonus Reitter, 1912 (Coleoptera: Curculionidae: Otiorhynchus) from the West Caucasus

New data on the morphology, biology and distribution of Otiorhynchus (Pliadonus) abagoensis Reitter, 1888, O. brachialis Boheman, 1843, O. dentitibia Reitter, 1888, O. dolmenicus Davidian et Savitsky, 2006, O. granulatissimus Reitter, 1914, O. helenae Reitter, 1914, O. impressiceps Reitter, 1888, O. pseudobrachialis Reitter, 1914, O. schamylianus Reitter, 1888, O. starcki Retowski, 1885, and Otiorhynchus sp. pr. longipes Stierlin, 1872 are given. All of them are local endemic species distributed only in the West Caucasus (Russia: Stavropol and Krasnodar regions, Adygea; Abkhazia). A key to 11 species of the subgenus Pliadonus Reitter, 1912 is given. Few host plants are established for O. starcki, O. pseudobrachialis and O. granulatissimus. Otiorhynchus pseudobrachialis was collected for the first time after its description by E. Reitter in 1914; all of specimens were found only on Epimedium colchicum (Boiss.) Trautv. (Berberidaceae). Otiorhynchus starcki and O. granulatissimus occurr on different plants, from which on Epimedium colchicum O. starcki was found in the south part of its range and O. granulatissimus in the northwestern part of Abkhazia. In our opinion Epimedium colchicum together with O. starcki, O. pseudobrachialis and O. granulatissimus represent the autochthonous nature complexes in the West Caucasus. The holotype of O. fortispinus Reitter, 1909 was examined, and lectotypes of O. starcki, O. pseudobrachialis, O. granulatissimus and O. dentitibia are designated. The following new synonymy is proposed: O. schamylianus Reitter, 1888 = O. tbatanicus Reitter, 1914, syn. n. Otiorhynchus lilligi Keskin et Cevik, 2007 is transferred from the subgenus Pliadonus to Pocodalemes Reitter, 1912

A new species of the weevil genus Ubychia Rost, 1893 (Coleoptera: Curculionidae: Brachycerinae) from the North-Western Caucasus

A brief morphological characteristic of the genus Ubychia Rost, 1893 is given. Ubychia abagoensis Davidian et Arzanov, sp. n. is described from the Caucasian State Nature Biosphere Reserve in the Republic of Adygea, Russia. The new species is closely related to U. stygia Rost, 1893, from which it differs in the following features: penis is noticeably narrowed in the preаpical part and narrowly rounded at the apex, collum of the spermatheca is quite large and noticeably elongate. The new species differs from U. mingrelica (Reitter, 1894) in the following features: antennal funicle 5-segmented, pronotum and elytra with distinct fine punctation, apex of the penis rounded. The following new synonymy is established: U. stygia Rost, 1893 = U. solochaul Struyve, 2010, syn. n. Ubychia mingrelica is recorded from Russia for the first time based on a specimen from Sochi. A key to three species of the genus Ubychia known from the Western Caucasus in Russia is given