Sympatry of genetic lineages of s. l. (Collembola, Isotomidae) in the East European Plain.

(Schaeffer, 1896) is one of the most abundant eurytopic species of springtails in temperate regions of the northern hemisphere, and is often used as a model species for studies on the genetics of soil microarthropod populations. Six genetic lineages (L0, L1, L2, L3, L4-Saltzwedel, L4-Hebert) are known which are distributed mainly parapatrically in Western and Central Europe. Individuals of from 21 locations on the East European Plain were analyzed.

The extremely high diversity of Collembola in relict forests of Primorskii Krai of Russia.

Background: The diversity of soil animals of relict forest ecosystems in East Asia continues to be insufficiently studied and almost not represented in international databases, including GBIF. This article is based on 7550 records of 175 species which were collected in Ussuriiskii, Sikhote-Alinskii and Kedrovaya Pad' natural reserves of Russian Far East in 2016-2017. A multi-scale sampling design allowed us to estimate population densities and local species richness of Collembola at areas of different sizes.

Diversity of Collembola under various types of anthropogenic load on ecosystems of European part of Russia.

Background: Despite the key role played by soil organisms in the functioning of terrestrial ecosystems and provisioning of ecosystem services (Barrios 2007, Bardgett and Putten 2014), available open data on soil biodiversity are incongruously scarce (Eisenhauer 2017, Cameron 2018). This is especially true for Russia, but contrasts long traditions of soil zoological research and large volumes of data that were collected during the second half of the 20 century for the territory of the former USSR. Last year, 41,928 georeferenced occurrences of soil-dwelling arthropods Collembola were digitised and published through GBIF.

gen. n., a new intriguing genus of Neanurini from the Caucasus (Collembola, Neanuridae, Neanurinae).

is described and established for two new species of Neanurini from the Caucasus. The new genus is characterized by an unusual combination of features: the fusion of all lateral tubercles on the head into a single mass, the strong reduction of chaetae on the head, the fusion of cephalic tubercles Af and Oc into a transverse band, the absence of labial chaetae f, the presence of microchaetae on furca rudimentary, and the penultimate abdominal tergum with two tubercles separated along the midline. strongly resembles Deharveng & Bedos, 2000, a monotypic genus up to date known only from Vietnam.

The genera Deharveng, 1982 and Mayvan et al., 2015 are no longer monotypic: description of new species from the Caucasus (Collembola, Neanuridae, Neanurinae, Neanurini).

Two new species from the Caucasus belonging to the genera and are described and illustrated in detail. is distinctive because of the presence of chaetae E on the head as well as three ordinary chaetae on tubercles De of thorax III and abdomen I-III. Additionally, the species can be recognized by the absence of chaeta O on the head and presence of 3+3 chaetae Di on abdomen V.

Three new remarkable species of the genus Cassagnau, 1979 from the Middle East and Central Asia (Collembola, Neanuridae, Neanurinae, Neanurini).

New species belonging to the genus is described and illustrated in detail. , from northern Iran, is distinctive due to an exceptionally elongate buccal cone compared to that of most other species of the genus. Other characteristic features of the species are the white body with pigmented eyes, a reduced chaetotaxy of the lateral part of the head, the thorax II-III and abdomen I-III with free chaetae De2 and 3, and abdomen IV with particularly short chaetae Di1.

Remarkable diversity of the genus Cassagnau, 1979 (Collembola: Neanuridae: Neanurinae) in the Caucasus.

Endonura alticola (Stach, 1951) comb. nov. is redescribed based on the type material and seven new species of the genus Endonura are described from the various parts of the Caucasus.