A new species, Paracarophenax triplaxophilus n. sp. (Acari: Acarophenacidae), is described based on phoretic females collected under the elytra of a mycophagous beetle Triplax scutellaris Charpentier, 1825 (Coleoptera: Erotylidae) in European Russia. An updated key to species of Paracarophenax is provided. Homologies of some gnathosomal structures of acarophenacid mites are re-evaluated.
A new species, Tomentella rostrata Kotkova sp. nov., from Pskov Region (North-Western European Russia), is characterized by isodiametric hyphae without clamps and angular or ellipsoid spores (7)8–10 × 5–6 μm, with bifurcate echinuli and prominent apiculus.
The small Paleozoic protozygopteran family Permagrionidae comprises 11 described species in 5 genera from the Lower Permian Chekarda and Solikamsk localities in Russia (Zalessky, 1948; Nel et al., 2012) and Salagou Formation in France (Nel et al., 1999; Fate et al., 2013), the Middle Permian Soyana and Kargala localities in Russia (Martynov, 1932; Martynov, 1937; Nel et al., 2012), and the Upper Permian Bodie Creek Head locality in Malvinas Tillyard (1928). Here we describe the new species, Epilestes rasnitsyni sp. nov. from the Ufimian of Perm Territory, which is characterized by specific arrangement of veins in the petiole and the unique preservation of body structures.
Betuloxys kostyukovi sp. n. is described from the environs of St.Petersburg. The new species is closely related to B. assamensis Starý from India and differs in the areolation of propodeum and structure of antenna and ovipositor sheath.
The paper considers a new species of gleicheniacean fern Tumidopteris astra Naugolnykh sp. nov. from the Lower Permian (Kungurian) and the Middle Permian (Roadian) deposits of the Pechora coal-basin, Russia. The new species is characterized both by macromorphology of the fertile and sterile pinnules and micromorphology of the sori and sporangia. Morphology of the most closely related leptosporangiate ferns is discussed.
A new species, Adactylidium europaeum n. sp. (Acari: Acarophenacidae), is described based on phoretic females collected on thorax of larvae of Phlaeothrips sp. (Thysanoptera: Phlaeothripidae) in European Russia. An updated key to the species of Adactylidium is provided.
Kazakhstanosaurus efimovi Yakupova et Akhmedenov sp. nov. (Ichthyosauria, Undorosauridae), a New Species from the Upper Jurassic Deposits of the Middle Volga Region
