At a crossroads: Genetic lineages and dispersal routes of (Sulzer, 1776) s.l. (Coleoptera, Cerambycidae) in Bulgaria.

The present study fills a knowledge gap in the distribution and genetic variation of populations in the Balkans, by studiyng the representatives of the genus in Bulgaria - Mulsant, 1862, Danilevsky, 2016 and Reitter, 1894. Additional information is provided for Albania and northern Greece. The mitochondrial cytochrome C oxidase subunit I (COI) marker and the nuclear internal transcribed spacer 2 (ITS2) were used for the genetic analyses.

Trechus (s. str.) "subnotatus" species group (Coleoptera: Carabidae) in Bulgaria.

The presented study is the first attempt to clarify the taxonomic composition of the Trechus "subnotatus" species group sensu Jeannel (1927) in Bulgaria. The study is based on the material collected during field expeditions in Bulgaria from 2009 to 2021 and collections of some European museums and institutions. As a result, based on the morphology of the male aedeagi, five taxa (species and subspecies) of the T.

Endogean and Cavernicolous Coleoptera of the Balkans. XX. Notes on the genus Protamaurops J. Müller, 1944 (Coleoptera: Staphylinidae: Pselaphinae) with the description of a new species from Bulgaria.

The genus Protamaurops J. Müller, 1944 and three species: P. macedonicus J.

Description of new species of Pseudamaurops Jeannel, 1948 (Coleoptera: Staphylinidae: Pselaphinae) from Greece and North Macedonia.

Two new species of Pseudamaurops Jeannel, 1948 are described, P. hristovskii sp. n.

A new species of Pselaphogenius Reitter, 1910 of the fiorii species group from southern Italy (Coleoptera, Staphylinidae, Pselaphinae).

Pselaphogenius chloe sp. n. belonging to the fiorii species group is described.

Description of a new Westwood (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam.

Background: A new species of the genus Westwood, Bekchiev & Yin sp. n., is described from northern Vietnam.

New and interesting species of the genus Bryaxis Kugelann, 1794 (Coleoptera, Staphylinidae, Pselaphinae) from Croatia.

New data on the genus Bryaxis Kugelann, 1974 from Croatia are presented. Two new species, Bryaxis bedeki sp. nov.

Revision of the genus Delenda Croissandeau, 1891 (Coleoptera: Staphylinidae: Pselaphinae).

The genus Delenda Croissandeau, 1891 is revised and redescribed. The taxonomic position of the Delenda frivaldszkyi Reitter, 1893 is discussed, and its species status is resurrected. Delenda carthago Croissandeau, 1891, and D.

A new species of Lasinus Sharp (Coleoptera: Staphylinidae: Pselaphinae) from East China.

Lasinus orientalis Yin & Bekchiev, new species, is described from the eastern Chinese provinces of Zhejiang and Jiangxi, with major diagnostic features illustrated. The new species is compared with, and distinguished from related congeners.

A taxonomic revision of Tyrini of the Oriental region. V. Revision of the genus Lasinus Sharp, 1874 (Coleoptera, Staphylinidae, Pselaphinae).

The genus Lasinus Sharp, 1874 of the Pselaphodes complex of genera (Pselaphitae: Tyrini: Tyrina) is revised. The three so far known species, Lasinus mandarinus Raffray, 1890, Lasinus monticola Sawada, 1961 and Lasinus spinosus Sharp, 1874 are redescribed. Eight new species, Lasinus sinicus sp.

A new species of Tychobythinus Ganglbauer, 1896 (Coleoptera: Staphylinidae: Pselaphinae) from Turkey.

A new species of the genus Tychobythinus Ganglbauer, 1896, Tychobythinusoculatus sp. n., is described from near Köyceğiz, Muğla Province, in southwestern Turkey.