Three morphologically distinct new species of the caridean shrimp family Alpheidae are described, based on material collected in the south-western Indian Ocean. Arete cornutus sp. nov. is described based on several specimens of both sexes from southern and south-western Madagascar. This new species appears to be closest to A. acanthocarpus Miya & Miyake, 1968, differing from it and all other congeners by the presence of prominent supra-orbital teeth. Synalpheus gloriosus sp. nov. is described on the basis of a single female holotype from les Glorieuses collected in the mesophotic zone at a depth range of 80147 m. One of the main diagnostic characters of S. gloriosus sp. nov. is the presence of a dense brush of gambarelloid setae on the minor cheliped, a very uncommon feature among Indo-West Pacific species of the genus Synalpheus Spence Bate, 1888. Finally, Alpheus ledoyeri sp. nov. from the A. brevirostris (Olivier, 1811) species group is described based on a single male holotype collected in north-western Madagascar in 1960.

Stactobiinae comprise 479 species worldwide. In Brazil, only 15 species have been reported, most of which are endemic to the Amazon rainforest and Atlantic Forest. In this work we provide the description and illustration of three new species from Brazil, two in the genus Flintiella and one in the genus Orinocotrichia. Flintiella angrisanoae sp. nov. differs from congeners by the inferior appendages being long and slightly sinuous and the phallic apex is divided into two asymmetrical lobes, with an ejaculatory duct protruding mesally. Flintiella quiteriae sp. nov. can be recognized by the phallic apex being deeply divided into two lobes, both curved to the right, with the left lobe overlapping the right. Orinocotrichia costae sp. nov. differs from congeners by truncated processes of segment IX and inferior appendages each with an anteroposterior membranous projection that narrows at the apex. We also are providing an updated checklist for Brazil, with new distribution records for seven Stactobiinae species: Bredinia espinosa Harris, Holzenthal & Flint 2002c; Flintiella andreae Angrisano 1995; F. astilla Harris, Flint & Holzenthal 2002b; F. boraceia Harris, Flint & Holzenthal 2002b; F. triaena Gama Neto, Ribeiro & Passos 2020, F. manauara Santos & Nessimian 2009, and F. pizotensis Harris, Flint & Holzenthal 2002b. Additionally, new illustrations and taxonomic comments are provided for F. triaena.

Rearing data for 5 species of the subfamily Agromyzinae, 4 species of Ophiomyiinae and 35 species of Phytomyzinae is presented in detail from material collected during 20112024 mainly in Ukraine. Additional new rearing data are also provided for 20 previously treated species (Guglya 2021). Figures of cephalopharyngeal skeletons, heads of flies, female terminalia, male terminalia (where necessary) and photos of mined host plants and puparia are provided. Two new species are described from Dicotyledons (Centaurea, Taraxacum and Lactuca): Melanagromyza stemivora sp. nov. and Phytomyza serriola sp. nov. New host plants were revealed for Agromyza dipsaci Hendel, A.paralucida Guglya, A.parca Spencer, Amauromyza (Amauromyza) leonuri Spencer, A. (A.)rameli ern, A.(Cephalomyza) flavifrons (Meigen), Liriomyza galiivora (Spencer), Phytomyza hellebori Kaltenbach, P.melana Hendel, P.origani Hering and P.ranunculivora Hering. One species A.parca, is newly recorded for Europe and twenty one species newly recorded for Ukraine.

The Neotropical freshwater crab, Pseudothelphusa americana de Saussure, 1857, has historically been an unstable taxon. New collections from the published range of P. americana indicate a great deal of morphological variation within this taxon, suggesting that it may be a species complex. In the present study we describe three new species within the P. americana complex based on a phylogenetic analysis, on a study of the morpho-geometric variation of the gonopod, and on a thorough morphological revision of somatic and sexual structures. Three new species (P. chilapaensis sp. nov., P. hermosorum sp. nov., and P. queretana sp. nov.) are described, and P. americana sensu stricto is redescribed, a neotype designated and its revised geographic distribution mapped.

Bryozoans are major components in fouling communities, showing characteristics that facilitate their introduction into new areas mainly through hull fouling. Artificial structures in marinas are key for the introduction of bryozoan non-indigenous species (NIS), acting as a reservoir for their further spread to other areas. Considering that NIS management should be preventative, a comprehensive understanding of bryozoan diversity in marinas is mandatory. This is especially relevant in areas that rely heavily on shipping, such as the Canary Islands, where this information is still lacking. Here, we assessed bryozoan diversity in recreational marinas of Tenerife, Gran Canaria, Fuerteventura and Lanzarote. We found 24 taxa: 12 NIS, eight cryptogenic species and four unassigned. Seven of these species constituted new records for Canary Islands, including three for Spain, four for Macaronesia and two for the North-Eastern Atlantic. Primary taxonomical, faunistic and ecological studies are crucial to properly conduct adequate management programmes for NIS.

The antlion genus Epacanthaclisis of the subfamily Dendroleontinae is herein revised. A total of 22 species (including 11 new species) are recorded from East to Central Asia and classified into four species groups: 1) the E. continentalis group: E. alaica Krivokhatsky, 1998, E. continentalis Esben-Petersen, 1935, E. darman Zheng, Badano, U. Aspck, H. Aspck & Liu sp. nov., E. hamata Krivokhatsky, 1998, E. kuldurguch Krivokhatsky, 1998, E. liuyingqiae Zheng, Badano, U. Aspck, H. Aspck & Liu sp. nov., E. victor Badano, Zheng & Liu sp. nov., E. zhiweii Zheng, Badano, U. Aspck, H. Aspck & Liu sp. nov., and E. zuqii Zheng, Badano, U. Aspck, H. Aspck & Liu sp. nov.; 2) the E. tuyuezhengi group: E. tuyuezhengi Zheng & Liu sp. nov., E. zhihaoi Zheng & Liu sp. nov.; 3) the E. maculosa group: E. jiazhii Zheng, U. Aspck, H. Aspck, Hayashi & Liu sp. nov., E. maculata (Yang, 1986), E. maculosa (Yang, 1986), E. minana (Yang, 1999), E. wuchaoi Zheng, Badano & Liu sp. nov., and E. xiaohongae Zheng & Liu sp. nov.; 4) the E. moiwana group: E. banksi Krivokhatsky, 1998, E. longwai Zheng, Hayashi & Liu sp. nov., E. moiwana (Okamoto, 1905), and E. ningshana Wan & Wang, 2010. Besides, E. batangana Yang, 1992, is not assigned to any species group. E. amydrovittata Wan & Wang, 2010 syn. nov. and E. samarkandica Krivokhatsky, 1998 syn. nov. are respectively synonymized as E. banksi and E. continentalis. Immature stages of five species (E. zuqii sp. nov., E. jiazhii sp. nov., E. minana, E. banksi, and E. ningshana) from China are reported after identification through rearing and COI barcoding. A key to the species of Epacanthaclisis is provided. The specialized morphological characters, systematic position, distribution pattern, and biology of Epacanthaclisis are discussed.

The ichthyofauna of Romania has long constituted the object of scientific studies; however, rapid changes in both taxonomy and the composition of local fauna require constant updating of the country species list. We attempt here to give a complete checklist of Romanian ichthyofauna, including recently extinct and introduced species, and discussing doubtful records. A discussion of the taxonomical status of recorded species is also included. We discuss 272 species (plus 2 introduced hybrids) recorded for Romania, belonging to 79 families and 31 orders. The distribution and status of treated species are also briefly delineated.

Parabathynellidae are small, interstitial, subterranean crustaceans, and an ancient and important element of the Australian aquifers. Many taxa have been discovered in the past few decades, especially in the north of Western Australia, due to surveys conducted on behalf of the mining industry for compliance with Western Australian environmental legislation. Molecular data has become a valuable tool in delimitation of species, especially for environmental impact assessments. However, formal descriptions rarely follow. Here we describe 12 new Parabathynellidae species and three additional putative species delimited initially by genetic data. Using an integrative approach we describe three species of Hexabathynella (H. miralgaensis sp. nov., H. julianae sp. nov., H. robeensis sp. nov.) and seven species of Atopobathynella (A. abelloana sp. nov., A. beasleyensis sp. nov., A. runhami sp. nov., A. jessicae sp. nov., A. shawensis sp. nov., A. rudini sp. nov., A. pervulgata sp. nov.) from the Pilbara region; and two species of Kimberleybathynella (K. ordensis sp. nov. and K. callani sp. nov.) from the Kimberley region. A multigene phylogeny was reconstructed from DNA sequences of the Cytochrome Oxidase c Subunit I (COI), 12S rRNA (12S), and nuclear 18S rRNA (18S) for representative taxa from Australia and other countries. The phylogeny highlighted interesting relationships between species and genera, and raises doubts regarding the validity of the genus Kimberleybathynella.

Kalligramma haeckeli Walther, 1904, the type species of the genus, is re-described based on the holotype. We find that its hind wing CuP is deeply forked. Based on this and other shared character states, Kalligrammula Handlirsch, 1919, syn. nov., and Limnogramma Ren, 2003, syn. nov., are considered subjective synonyms of Kalligramma Walther, 1904, and Oregrammatinae a synonym of Kalligrammatinae, syn. nov. The Kalligrammatinae now include Kalligramma, Sinokalligramma Zhang, 2003, Oregramma Ren, 2003, sit. nov., Abrigramma Yang et al., 2014b, sit. nov., and probably Makarkinia Martins-Neto, 1992. Only four subfamilies are well defined and valid in Kalligrammatidae, i.e., Kalligrammatinae, Liassopsychopinae, Sophogrammatinae, and Kallihemerobiinae. The kalligrammatid affiliation of Cretanallachiinae and the validity of Meioneurinae are questionable.

Oedionychina Chapuis, 1875 is a large group of flea beetles that have been the subject of several taxonomic studies in recent years. Here, we present data on external morphology and genitalia of six species of Oedionychina from the Brazilian Cerrado. High-quality photos are included. We update descriptions of three known species, Alagoasa burmeisteri (Harold, 1881), Omophoita magniguttis Bechyn, 1955, and Paranaita opima (Germar, 1824), and describe three new species, O. mateusi sp. nov., Walterianella marae sp. nov., and Walterianella tapuiae sp. nov. The specimens were sampled at the Parque Estadual Altamiro de Moura Pacheco (PEAMP), Gois, Brazil, a remnant of Cerrado mostly covered by semi-deciduous forest. These updates are part of our ongoing efforts to elucidate the diversity of Oedionychina in the Cerrado.

Zitha ferrugineofasciata Irungbam & Mally sp. nov. (Pyralidae: Pyralinae) is described based on 12 male adult specimens collected in Manipur state, India. In addition, three species, Circobotys obscuriptera Wang, 2018 (Crambidae: Pyraustinae), Neoanalthes nebulalis Yamanaka & Kirpichnikova, 1993 (Crambidae: Spilomelinae) and Teliphasa spinosa Li, 2016 (Pyralidae: Epipaschiinae) are reported from India for the first time. Illustrations of the adults and their genitalia are provided.

In this paper, the nominotypical subgenus of Callimus is newly recorded from China, with the description of a new species, Callimus (Callimus) qingmingi Wang, Xie & Wang, sp. nov. from Xizang Autonomous Region, China. Illustrations of habitus and male genitalia are provided.

Three species of the subgenus Eurysunius Reitter (Coleoptera: Staphylinidae, Paederinae, Astenus) from Trkiye are described and illustrated: Astenus koszela sp. nov. (Kastamonu province), A. sinopensis sp. nov. (Sinop province), and A. hatice sp. nov. (Tokat and Amasya province). The subgenus is now represented in Trkiye by 31 species, 30 of them are only known from the country. The distributions of these species in Trkiye are mapped.

A new nettastomatid eel species is described based on eight specimens collected from the deep-water (260450 meters depth) of the eastern Arabian Sea. The new species is characterized by having large head, dorsal-fin origin before gill openings, body and head bicolour, and total vertebrae 156+205+. It differs from its congeners in position of dorsal-fin origin (before gill openings vs. behind gill openings in F. castlei, F. equatorialis, F. oxyrhynchus) and from F. karrerae and F. saurencheloides in having larger head (43.647.5% PAL vs. 36.237.3% PAL in F. karrerae and 28.532.0% PAL in F. saurencheloides). Comparison with CO1 mtDNA sequences in GenBank and BOLD, confirms that the new species forms a separate genetic lineage.

This study documents significant distributional expansions of three orthopteran taxa in China and describes a new species from the Tibetan Plateau. We present the first confirmed records of the subfamily Phalangopsinae, genus Indozacla Gorochov 2018, and species Meloimorpha cincticornis Walker 1870 in China. This newly discovered Indozacla dorsiglaber Ma & Wang sp. nov. exhibits wing sexual dimorphism, with males having short wings and females wingless. Comprehensive morphological descriptions, diagnostic comparisons, and ecological photographs are provided, supplemented by COX1 molecular data exploring the systematic relationships of several species. These findings extend the known northern limits of Phalangopsinae in Asia and contribute to understanding Himalayan orthopteran diversity.

Four new species of the subgenus Cryptocephalus Geoffroy, 1762 are described from China: Cryptocephalus (s. str.) bimaculatithoracalis Duan, Wang & Zhou, sp. nov. from Yunnan, C. (s. str.) langxianus Duan, Wang & Zhou, sp. nov. from Tibet, C. (s. str.) wenquanensis Duan, Wang & Zhou, sp. nov. from Yunnan, and C. (s. str.) zhangi Duan, Wang & Zhou, sp. nov. from Yunnan. Three species are recorded for the first time from China: C. (s. str.) flavicinctus Jacoby, 1892, C. (s. str.) laosensis Pic, 1928, and C. (s. str.) sexsignatus (Fabricius, 1801). High quality color images and line drawings of adult habitus, aedeagus and other important structures are provided for the new species and the new country record species. All the types of the new species are deposited in the collection of Institute of Zoology, Chinese Academy of Sciences (IZ-CAS).

New taxonomic and faunistic data on the dysderid spiders of Kosovo are presented, along with a survey of previous records. Harpactea dardanica Geci & Zamani sp. nov., belonging to the lepida species-group, is described as new to science based on male specimens collected in the Bjeshkt-e-Nemuna National Park, western Kosovo. Dysdera adriatica Kulczyski, 1897, Dy. lata Reuss, 1834, Dasumia kusceri (Kratochvl, 1935), H. rubicunda (C.L. Koch, 1838), H. srednagora Dimitrov & Lazarov, 1999, and H. tenuiemboli Deltshev, 2011, as well as the genus Dasumia Thorell, 1875, are reported from Kosovo for the first time. Additional records are provided for Dy. longirostris Doblika, 1853 and H. lepida (C.L. Koch, 1838). DNA barcodes (partial sequences of the mitochondrial cytochrome c oxidase subunit 1 gene) were generated for all species. Photographic illustrations are provided for the newly described species, as well as for H. srednagora and H. tenuiemboli.

Thrips jazanensis sp. nov. is described based on both sexes collected on the flowers of parasitic plants Araujia sp. and Pergularia sp. (Apocynaceae). The relationship among some closely related species and their host plants is discussed. Two species, T. microchaetus and T. subnudula are recorded for the first time from Saudi Arabia. A key to the twelve Arabian Peninsula species of genus Thrips is also given.

An integrative taxonomic analysis was used to delimit and diagnose a new species of Dixonius from a karstic archipelago in western Cambodia. Dixonius noctivagus sp. nov. was recovered as the sister species to an undescribed species from eastern Cambodia and southwestern Vietnam based on 1,396 bp of the mitochondrial ND2 gene. A statistically robust diagnosis was established through multivariate and univariate analyses of morphometric, meristic, and categorical color pattern characters separating D. noctivagus sp. nov. from all other congeners. Although Dixonius is a common and widespread genus, the description herein brings the total number of Dixonius in Cambodia to twofar fewer than the eight species from both neighboring Thailand and Vietnam. This disparity underscores the need for systematic biodiversity surveys in the many understudied regions of Cambodia, particularly focusing on its herpetofauna. The discovery of D. noctivagus sp. nov. alongside recently described Cyrtodactylus and Hemiphyllodactyus species from the same karst formations highlights the urgent need for legal protection of these fragile habitats in the region.

In the present paper, Strongylium (s. str.) tandai sp. nov., the first new representative of its hyperdiverse genus from the Solomon Archipelago in half a century, is described and illustrated. New faunistic records are provided for two other Solomon Strongylium W. Kirby, 1819 species.

Barolineocerus Freytag, 2008 currently includes eleven species from Brazil, Colombia, Ecuador, French Guiana, and Peru, including three new species described herein, namely B. chicomendesi sp. nov. from Brazil (Amap, Amazonas, Par, and Roraima states) and French Guiana (Rgina), B. dercyae sp. nov. from Brazil (Amazonas and Rondnia states) and Ecuador (Orellana), and B. digitatus sp. nov. from Brazil (Amap) and French Guiana (Rgina and Sal). In this revision, we propose a new synonymy for B. bispinus Freytag, 2008 (= B. declivus Freytag, 2008 syn. nov.), expand the known distribution of Barolineocerus to include Ecuador and record the following species from additional countries: B. acius Freytag, 2008, B. apiculus Freytag, 2008, B. elongatus Freytag, 2008, B. ornatus Freytag, 2008, and B. spinosus Freytag, 2008 from Brazil, B. acius, B. apiculus, and B. bispinus Freytag, 2008 from Ecuador, and B. bispinus from Peru.