Notes on the genus Hirschmann, 1989 (Acari, Mesostigmata, Urodinychidae).

The genus Hirschmann, 1989 (Mesostigmata: Uropodina: Urodinychidae) is resurrected for species of the -group. This genus differs from the other taxa of Berlese, 1903 sensu lato based on the shape of the idiosoma and the caudal and dorsal setae. Three species from the -group are transferred to the genus , as (Hirschmann, 1973), , (Hiramatsu, 1980), and (Hiramatsu, 1980), The other seven species from this species group are transferred to , as (Vitzthum, 1926), , (Hiramatsu, 1985), , (Hiramatsu & Hirschmann, 1978), , (Hiramatsu & Hirschmann, 1978), , (Hiramatsu, 1980), , (Hiramatsu & Hirschmann, 1978), and (Hiramatsu & Hirschmann, 1978), The new genus differs from by the shape of the idiosoma and the shape of marginal and dorsal setae.

Remarks on the genus Berlese, 1917, with the description of Phymatodiscidae fam. nov. and gen. nov., sp. nov. from Indonesia (Acari, Mesostigmata).

Phymatodiscidae is diagnosed, with as the type genus. A new genus, , with (from Indonesia) as the type species, is erected to accommodate the species with an eye-like dorsal depression. Six species are reclassified as : (Hiramatsu, 1985), , (Hiramatsu, 1985), , (Hirschmann, 1977), , (Kontschán & Starý, 2011), , (Kontschán & Ripka, 2016), , and (Kontschán & Starý, 2012), The new species differs from the previously described congeners in the sculptural pattern, the shapes of the dorsal and ventral setae, and the sculptural pattern of the sternal shield of the male and the genital shield of the female.

The pseudoscorpions of the Caucasian bogs: part I. Description of Neobisium (Neobisium) adjaricum sp. nov. and redescription of the holotype of N. (N.) vilcekii Krumpál, 1983 (Arachnida, Pseudoscorpiones, Neobisiidae).

A new species of pseudoscorpions, Neobisium (Neobisium) adjaricum, is described and diagnosed. It was collected in the habitats of Ispani lowland mires in Transcaucasia (Republic of Adjara, Georgia). The habitat of N.

The second species of the genus Kontschán, 2019: description of sp. nov. from Ivory Coast (Acari, Mesostigmata, Urodinychidae).

A new species ( ) is described from Ivory Coast based on five females. The new species differs from the previously described congener ( Kontschán, 2019) based on the shape of female genital shield, dorsal setae, centro-caudal part of the marginal shield and peritremes.

Macrophyte diversity in rivers and streams of the Vologda Region and several other regions of Russia.

Background: The data paper contains the authors' materials on the diversity of macrophytes, macroscopic plants regardless of their taxonomic position, in rivers and streams of East European Russia and Western Siberia. These data, collected on 247 rivers and 32 streams in 13 administrative regions of the Russian Federation, were provided as an occurrence dataset presented in the form of GBIF-mediated data. The main portion of the data was obtained in water objects of the Vologda Region (5201 occurrences).

Biodiversity of a boreal mire, including its hydrographic network (Shichengskoe mire, north-western Russia).

Background: The paper is based on the dataset whose purpose was to deliver, in the form of GBIF-mediated data, diverse materials on the biodiversity of a large mire, Shichengskoe mire (Vologda Region, north-western Russia), including its various mire sites and intra-mire water bodies. The dataset was based on our materials collected for two decades (from 2000 to 2021) in different parts and biotopes of the Shichengskoe mire and complemented by scarce data obtained previously by other researchers. The data contain materials on the diversity of Animalia (2886 occurrences), Bacteria (22), Chromista (256), Fungi (111), Plantae (2463) and Protozoa (131).

Horvath, 1899 - a new species of the family Corixidae (Heteroptera) for the fauna of the Middle Urals.

Background: Micronecta (Micronecta) griseola Horvath, 1899 is a representative of water bugs of the family Corixidae. It is expanding its range eastwards according to our observations in Russia. In the last decade, the species has become more common in Western Siberia.

New records of bat flies (Diptera: Nycteribiidae), with an updated checklist of the nycteribiids of Russia.

We assembled a checklist by documenting and curating previously published data as well as previously unpublished records of bat flies from the Russian Federation. A total of 20 bat fly species are listed, belonging to 4 genera. Basilia mongolensis nudior Hůrka, 1972 and Basilia nattereri (Kolenati, 1857) are recorded from Russia for the first time.

"Flora of Russia" on iNaturalist: a dataset.

Background: The "Flora of Russia" project on iNaturalist brought together professional scientists and amateur naturalists from all over the country. Over 10,000 people were involved in the data collection.

New Information: Within 20 months, the participants accumulated 750,143 photo observations of 6,857 species of the Russian flora.

Feather mites of the genus Trouessartia Canestrini (Acariformes: Trouessartiidae) from swallows (Passeriformes: Hirundinidae) in Canada.

Seven species of the feather mite genus Trouessartia Canestrini, 1899 (Astigmata: Trouessartiidae) have been recorded on swallows and martins (Passeriformes: Hirundinidae) in Manitoba (Canada). Of them, five are described as new species: Trouessartia ampulicaudata sp. n.

Validation of the status of a species with high CO1 and low nuclear genetic divergences: the scab mite Caparinia ictonyctis stat. res. (Acariformes: Psoroptidae) parasitizing the African hedgehog Atelerix albiventris.

We report two host-specific lineages of scab mites of the genus Caparinia, parasitizing European and African hedgehogs. Based on morphology, these mite lineages are closely related sister groups. The morphological differences, however, are subtle and do not provide clear-cut evidence for the existence of separate species.