The terrestrial gastropod Ferussina petofiana Páll-Gergely sp. n. is described from uppermost Cretaceous (Maastrichtian) deposits from the Haţeg Basin, Romania. It represents the first properly diagnosed and described snail taxon from these deposits, despite numerous earlier reports of gastropod occurrences. This new species is characterized by a depressed, mostly smooth shell, three spiral carinae on the ventral side (inside the umbilicus), and an upward-turning aperture. The last feature characterizes two European fossil snail genera, the cyclophoroidean Ferussina, and the stylommatophoran Strophostomella. The new species is classified in the former group due to its nearly circular aperture, and the presence of conspicuous spiral carinae. In contrast, the aperture of most stylommatophoran genera (including Strophostomella) is semilunar, and if raised sculptural elements are present, they are mostly radially oriented. The identification of this new taxon in the uppermost Cretaceous of Romania represents an important range extension for the genus Ferussina, and adds it to the brief list of European clades that appear to have survived the mass extinction event at the Cretaceous-Paleogene boundary.

A new oribatid mite subgenus of the genus Amboroppia (Oribatida, Oppiidae) – A. (Quintanoppia) subgen. n., with A. (Quintanoppia) defectofossulata sp. n. as type species – is described, based on material collected from Mexico. It can be distinguished from the nominate subgenus by the absence concavities between rostrum and transcostula and behind transcostula, and the presence of strong teeth on lateral sides of prodorsum. A revised generic diagnosis, identification key and data on distribution and habitats of representatives of Amboroppia are presented.

Two new flightless species of Lacon Laporte, 1838 are described from Yunnan, China: L. taotie sp. n. and L. yejiei sp. n. Key to the known species of flightless Lacon from China is also provided. Additional notes on the bionomics and morphology of recently described L. habashanensis Platia, Mertlik et Dušánek, 2023, including characters of previously unknown female, are given.

The forficula species group of the Holarctic genus Dichagyris is revised based on the survey of type specimens and relevant materials of state and private collections. D. turana (Staudinger, [1892]) stat. rev. and D. furiosa (Bang-Haas, 1912) stat. rev. are elevated to specific status and lectotypes are designated, D. forficula devota (Christoph, 1884) stat. rev. is downgraded to subspecies. The specific status of D. erubescens (Staudinger, [1892]) and D. contermina (Corti, 1930) is confirmed. The junior synonymy of D. devota eremica (Amsel, 1935) with D. forficula devota (Christoph, 1884) was constated. Seven new subspecies (D. forficula akdagestana ssp. n., D. forficula pseudoturana ssp. n., D. forficula chitralensis ssp. n., D. turana cisiliensis ssp. n., D. furiosa kugitanga ssp. n., D. furiosa griseoerythra ssp. n. and D. contermina melanographa ssp. n.) are described, with considerations on the phyletic lines and biogeography of the taxa of the D. forficula species complex. With 79 figures.

Years of research of the subtribe Blaptina made it possible to clarify relations between some species and propose changes in supraspecific structure of this subtribe. Blaps scabiosa Baudi di Selve, 1874 is designated as a type species of Caraboblaps Bauer, 1921, the new synonymy is proposed: Blaps Fabricius, 1775 = Caraboblaps Bauer, 1921, syn. n. Blaps nitens nitens Laporte, 1840 is designated as a type species of Periblaps Bauer, 1921, Blaps ominosa Ménétriés, 1832 is designated as a type species of Holoblaps Bauer, 1921; type species of Periblaps and Holoblaps are transferred here to genus Lithoblaps, as a result the following new synonymy is proposed: Lithoblaps Motschulsky, 1860 = Periblaps Bauer, 1921, syn. n. = Holoblaps Bauer, 1921, syn. n. The similarity of the structure of the aedeagus of Ablapsis compressipes Reitter, 1887 and some species of the subgenus Prosoblapsia Skopin et Kaszab, 1978 (genus Blaps Fabricius, 1775) gives a base to transfer the taxon Ablapsis Reitter, 1887 into the genus Blaps as a separate subgenus (Ablapsis stat. resurr.). Blaps tentyrioides Seidlitz, 1893 (= Blaps socia Seidlitz, 1893) is designated as a type species of the subgenus Protoblaps Bauer, 1921. As the genera Protoblaps Bauer, 1921 and Genoblaps Bauer, 1921 have one type species and the aedeagal structure of type species of Ablapsis, Protoblaps and Prosoblapsia is similar, the new synonymy is proposed: Ablapsis Reitter, 1887 = Protoblaps Bauer, 1921 syn. n. = Genoblaps Bauer, 1921 syn. n. = Prosoblapsia Skopin et Kaszab, 1978, syn. n. Analysis of imaginal and larval structures of the species here united in the taxon Lithoblaps Motschulsky, 1860 and other members of Blaps showed that differences between these two groups are comparable with those between other genera of the subtribe and, therefore, the former taxon is here regarded as a distinct genus Lithoblaps gen. resurr. Thus, 100 species and subspecies (marked as comb. n. or comb. resurr.) are transferred from Blaps to Lithoblaps. The additional new combination is established: Dila platythorax (Gemminger, 1870), comb. n. (from Blaps). The key to genera and the catalogue of the subtribe Blaptina are given.

Three new species of the genus Chrysolina Motschulsky, 1860, namely Сh. caspari sp. n., Ch. melchiori sp. n., and Ch. balthazari sp. n. are described from Sichuan and Yunnan Provinces of China. These species have rare or unique features. In Ch. caspari sp. n. the shape of the last maxillary palpomere (it is shorter and narrower than the penultimate one) is a rare case in the genus Chrysolina. Among Chinese species, this shape of maxillary palpi is known only in one species, Ch. pieli Chen, 1936. In Ch. melchiori sp. n. the relief of elytral surface (strongly reticulated irregular funnels bearing a puncture at the bottom, separated by smooth intervals) is unique for the genus Chrysolina. In Ch. balthazari sp. n. the relief of elytra (alternation of wide convex intervals between pairs of rows and very narrow flat or slightly convex intervals between rows of one pair) is well distinguishable from most Chrysolina members. Due to this feature, the new species can only be close to Ch. jinxiaoae Ge in: Daccordi, Ge, Cui, Yang, 2011 from North Sichuan. Photographs of habitus, external characters, and male aedeagi are presented.

A synopsis of the geocorine true bugs distributed in the Malagasy biogeographic region is presented, including the description Geocoris (Piocoris) petofii sp. n. and proposal of the new synonymy Geocoris (Geocoris) insularis China, 1955 = Geocoris (Geocoris) pallidipennis mauritii Stål, 1854. Keys, diagnoses, taxonomic notes, and distribution data for discussed species are provided.

The fauna of freshwater gastropods of the Arabian Peninsula, a desert land, is neither rich nor extensively studied. Only five species of the family Lymnaeidae have been recorded from this subcontinent so far. In February 2023, a few specimens of Radix rufescens (J. E. Gray, 1822) have been collected from the stream at Wadi Tiwi, NE Oman. The shell, female part of the reproductive organs, prostate, paraeputium and phalloteca are presented. Cytochrome oxidase subunit I (COI) sequences confirmed the assignment of these specimens to R. rufescens, known from Nepal, Bangladesh, and Myanmar, not from the Arabian Peninsula. Either R. rufescens is the sixth lymnaeid species inhabiting Arabia, or at least some of the records of R. natalensis (Krauss, 1848), whose shells are hardly discernible from the ones of R. rufescens, should be interpreted as misidentified R. rufescens. Thousands of years of the trade relations between Oman and India suggest accidental transportation of this snail by trade vessels.

The genus Micherdzinskiiobovella Hirschmann, 1989 (Mesostigmata: Uropodina: Uropodi­nychidae) is resurrected for species of the Uroobovella micherdzinskii-group. This genus differs from the other taxa of the Uroobovella sensu lato based on the shape of body, the first gnathosomal setae, the peritreme and the number of the ventral setae. All species from the Uroobovella micherdzinskii-group are moved to the genus Micherdzinskiiobovella, as M. japonica (Hiramatsu et Hirschmann, 1977) comb. n., M. levigata (Hirschmann et Hiramatsu, 1990) comb. n., M. ma­kilingensis (Hirschmann et Hiramatsu, 1990) comb. n., M. mitakensis (Hiramatsu et Hirschmann, 1977) comb. n., M. pauxilla (Hiramatsu, 1981) comb. n., M. pauxillaoides (Hirschmann, 1981) comb. n., M. similimitakensis (Hirschmann, 1981) comb. n., M. topali (Hirschmann, 1981) comb. n., and M. multisetosa (Kontschán et Starý, 2011) comb. n. A new species (M. petofii sp. n.) is described, based on one female and four males collected from Singapore. The new species differs from the congeners in the length and shape of the ventral setae.

Aedes (Stegomyia) albopictus (Skuse, 1894) is an invasive mosquito species that can transmit many arboviral diseases. In Turkiye, this species was found first in Thrace in 2011, then in the Eastern Black Sea in 2014, and in the Aegean regions in 2018. We analyzed the COI gene region of 554 samples from 13 different locations in the Black Sea, Aegean, and Marmara regions to determine the COI diversity and possible introduction origin of A. albopictus in Türkiye. Three haplotypes derived from two segregation sites were detected, and the Hd and π values were 0.175 and 0.00029, respectively. Hap_1 was a common haplotype and was detected in all regions. Hap_2 was detected in the Black Sea and Marmara regions, while Hap_3 was rare, and recorded only in Aegean lineages. In pairwise FSTs of 13 geographical populations, the Marmara lineages were statistically different from the Black Sea and Aegean lineages (except the Mugla samples). AMOVA test results indicated significant differences between the three studied regions (df = 2, f = 0.01784). Although Turkish Aedes albopictus lineages appear to have originated from temperate Northern Italy lineages and Aegean lineages may have originated from a mix of Italy and Albania lineages, the results revealed multiple introduction events via various routes.