Four, presumably microendemic new species are described on the basis of morphology of the adult males and females. Each species was collected only in a single mountain range of the western Balkans: Kovács & Murányi, (Albania, Çermenikë), (Serbia, Golija), (Bosnia & Herzegovina, Kozara), (Montenegro, Visitor). Their morphological affinities and ecology are discussed, phylogenetic relations will be described in the framework of ongoing molecular studies of Balkan species. The occurrences of the new species are depicted on a map. A list of Balkan endemic species is given. Vinçon & Murányi, 2007 is new for Albania and Montenegro, Despax, 1934, Pictet, 1836 and Raušer, 1962 are new for Albania, Aubert, 1949 is new for Bosnia & Herzegovina, while Capnias. l.viduarilensis Raušer, 1962 and Aubert, 1956 are new for Montenegro.

New taxonomic and faunistic data for three species of the genus Assing, 2013 from China are provided. Chen & Peng, (Chongqing: West Daba Shan) and Chen & Peng, (Guangxi: Maoer Shan) are described and illustrated. Additional records from Chongqing, detailed bionomic data and female sexual characters of (Assing, 2012) are provided. A key to the species of is given.

A new aphid species, , from Fujian and Guangdong, China, is described, which feeds on bamboo. The diagnostic morphological characteristics of the new species are described and illustrated. A key to apterous viviparous females of species is provided. The COI barcode sequence of this new species is also provided. Due to its unique morphological characteristics, the diagnosis of the genus has been revised. Other species within the genus are also reviewed and discussed.

The here-provided description of the new genera and was necessitated by a phylogenetic study of Staphylininae (to be published separately), which will be used for the proper characterization of their respective new suprageneric lineages in an upcoming update of the higher classification of this subfamily. Both new genera are erected for species that had been previously described but misplaced in the highly polyphyletic "taxonomic wastebasket" genera (Amblyopinina) and (Quediina), resulting in the following new combinations: (Smetana, 1971), ex. ; (Smetana, 1971), ex. ; † (Chatzimanolis & Engel, 2013), ex. ; (Smetana, 1971), ex. ; † (Chatzimanolis & Engel, 2013), ex. ; (Casey, 1886), ex. ; (LeConte, J. L., 1863), ex. ; (Blackwelder, 1943), ex. ; (Bernhauer, 1917), ex. ; (Sharp, 1884), ex. ; (Bernhauer, 1917), ex. ; (Bernhauer, 1917), ex. ; (Sharp, 1884), ex. ; (Sharp, 1884), ex. ; (Fauvel, 1891), ex. . Additionally, several more Neotropical species, which resemble , have been revised and transferred to the amblyopinine genus or the cyrtoquediine genus , with the following new combinations: (Scheerpeltz, 1960), ex. ; (Bernhauer, 1917), ex. ; (Erichson, 1840), ex. ; (Fauvel, 1891), ex. . The undescribed species diversity of the newly described genera is also highlighted.

A new species of Girault, Chen & Jiang, , is reported from China. A key to all species of the genus is provided. DNA standard barcode COI and partial nuclear ribosomal 28S-D2 from two individuals of were sequenced, and 28S-D2 rDNA was included in a phylogenetic analysis, confirming as the sister group to .

Two new species of the genus Meyrick, 1894 are described from China: and Additionally, Park, 2007 is newly recorded for China. Images of the adults and their genitalia are provided.

Despite the current recognition of and as two separate valid species of China, neither species have been revised based on examination of their types and/or topotypical materials, nor have they genetically analyzed. In this study, examination of the holotype of showed that it has a serrated anterior edge of the pectoral spine, a slightly emarginate caudal fin, and longer maxillary barbels extending beyond the base of the pectoral spine, the characters shared with specimens currently identified as . Morphological comparisons and molecular analysis showed that specimens from mainland China, which are characterized by the three mentioned morphological features, represent a single species. According to the nomenclatural rule of priority, is a senior subjective synonym of . Within this concept, is widely distributed in the lower reaches of Yangtze River and coastal rivers in Zhejiang and Fujian Province and closely related to , which is endemic to Japan. The morphological differences and species-level genetic distance between and provide additional support for synonymization of and . The paper also describes ontogenetic color changes and coloration polymorphism in this species. Phylogeny of the group, to which belongs, is also discussed.

This study presents a description of a new stick insect species belonging to the genus Shelford, 1909, discovered by the authors in the Chocó ecoregion of northwestern Ecuador. is described and illustrated based on males, females, and eggs. The distinctive features of this new species, such as its unique body ornamentation and the morphology of its egg structure without fringes, clearly differentiate it from other known species within the genus. Photographs of the new species are provided, along with an updated key and distribution map for all species. These findings enhance our understanding of the genus's diversity.

In this study, a morphological revision was conducted of Bruner, a group of grasshoppers inhabiting open xeric desert scrub, shrublands, and plains, spanning central Texas to central Mexico. The genus was originally described by Bruner in 1908, with two taxa added by Hebard in 1922. has remained unrevised despite numerous collections. This exploration, spurred by a novel discovery of significant male genitalia variation in , suggests undescribed species. Through morphological specimen comparisons, sixteen new species are described from biologically rich regions of the South Texas Plains, Chihuahuan Desert, and Sierra Madre Oriental. The new taxa described here are , , , , , , , , , , , , , , , and This discovery sheds light on desert biodiversity and hints at a Pleistocene radiation akin to other melanoplines, urging further exploration to enrich our understanding of this fascinating lineage and unravel the biogeographic history within these arid landscapes.

The genus Kawanabe, 1994 is newly recorded from China, and a new species, and its larva, is described and illustrated from Guangdong Province. We provide habitat and host fungi photos of the new species and a key to all described species of the genus.

Descriptions of the following three new species of Pic, 1901 from continental China are provided: , , and The available identification key to the Palaearctic species is supplemented and updated.

New taxonomic and faunistic data on the agelenid spiders of Turkiye and the Caucasus are provided. Five species are described as new to science: (♂♀; Turkiye: Antalya), (♂♀; Turkiye: Antalya), (♂; Turkiye: Antalya), (♂♀; Georgia: Imereti), and (♂♀; Armenia: Kotayk). Dimitrov, 2020, is proposed as a new junior synonym of Brignoli, 1978. (Guseinov, Marusik & Koponen, 2005) is newly reported from Armenia, and Kovblyuk & Ponomarev, 2008 is reported for the first time from Turkiye. New distribution records for Kulczyński, 1906, Brignoli, 1978, Simon, 1898 and Brignoli, 1972, and topotype material for Brignoli, 1978 are reported. The record of (Pavesi, 1873) from Turkiye is found to be based on a misidentification, and is herein attributed to . The presence of an embolic spine, unknown in any other species of , is documented in Brignoli, 1972 for the first time. Photographs are provided for all treated species.

Deer mice, , thrive in diverse environments and altitudes across North and Central America. The number of extant species continues to be debated with species counts ranging from 53 to 83. This study represents the first comprehensive historical and taxonomic account of the genus for Honduras. We systematically compiled records from all available sources, incorporating verified genetic and morphological evidence. We confirm the presence of , , , and for Honduras. The distribution maps provided here include confirmed records and approximate localities in a few cases and offer insights into the geographical distribution of these species in Honduras. Conducting a comprehensive assessment of the taxonomic status of in Honduras is imperative to achieve accurate conservation assessments within the larger Mesoamerican landscape. The present review establishes the baseline for future research on deer mice in Honduras, aiding in the validation of distributions and ecological data for the poorly understood genus in the country.

Newport, 1843 is the most diverse genus in the family Mecistocephalidae; however, only two species have been recorded in mainland China to date. Therefore, taxonomic research on Chinese needs further research. In this study, the species diversity of in southern China was investigated using the mitochondrial marker COI integrated with morphological evidence. Species delimitation using Automatic Barcode Gap Discovery, Poisson Tree Processes, and phylogenetic and morphological analyses revealed ten species, including two newly described species, Jiang & You, and Jiang & You, Furthermore, based on newly collected specimens, the presence of the little-known species Pocock, 1895 was confirmed in China and thoroughly re-described.

The genus Eaton, 1871 is widely distributed across the Holarctic and Oriental regions. However, no representatives of this genus have been reported from southwestern China, a region known for its high biodiversity. Here, we described and illustrated , a new species recently collected from Guizhou Province, southwestern China, across all developmental stages. The imagos of this new species exhibit some uncommon characters within , such as brown mid- and hindlegs, and pale stripes on the thorax. To explore the phylogenetic status of this new species within , a multigene phylogenetic analysis was conducted.

The subfamily Eupoinae Maddison, 2015 is an enigmatic group of minute leaf-litter-dwelling jumping spiders from Southeast Asia. Although previous molecular phylogenetic studies have suggested that it is one of the basal (non-salticine) lineages within jumping spiders, its exact placement remains unclear. In this study, ultra-conserved element data were collected from major salticid lineages to investigate the phylogenetic relationships of all salticid subfamilies, with a special focus on the placement of Eupoinae. The results provide a well-supported phylogeny for jumping spider subfamilies, and suggest a sister relationship of Eupoinae with Spartaeinae Wanless, 1984, a basal lineage of jumping spiders with relatively high species diversity and morphological and behavioural diversity. With the placement of Eupoinae, we have resolved the relationships of all salticid subfamilies, supplying a robust framework for evolutionary studies of jumping spiders.

The wolf spider genus Azarkina & Trilikauskas, 2019 from China is reviewed, including two species: (L. Koch, 1878) (♂♀) and (Urita, Tang & Song, 1993) (♂♀). Both species are restricted to northern China, with recorded from China for the first time. (Urita, Tang & Song, 1993), is synonymized with (Urita, Tang & Song, 1993). Detailed species descriptions, along with morphological photos, genitalia illustrations, SEM photos of the bulbs and photos of live specimens are also presented.

(Meyrick, 1936), initially described from a single male specimen in Japan, is herein redescribed based on newly collected specimens from the type locality. Furthermore, we describe Park & Yagi, , a new species from Japan that closely resembles . The adults and genitalia of the two species are illustrated. The genitalia of from a specimen collected at the type locality are shown for the first time. DNA barcodes of the two species and the genetic distances of barcode regions among them and other congeners are provided.

Four new species of leptonetid spiders from Anhui Province, China are recognized: Tong, (♂♀), Tong, (♂), Tong, (♂♀) and Tong, (♂♀). An identification key to leptonetid spiders from Anhui is provided.

The poorly known leafhopper species described as Deltocephalus (Laevicephalus) concinnus var. incisurus DeLong, 1926 previously had no accepted generic placement. It is here redescribed and placed in in the tribe Paralimnini, as (DeLong) Hamilton, 1987 is a junior of . Due to historic confusion, the species currently placed in Oman, 1949 were also reviewed. (Sanders & DeLong, 1917) is redescribed, and a lectotype is designated to clarify the application of the name. Ball & DeLong, 1926 and Beamer & Tuthill, 1934 are recognized as junior of , now the only recognized species in the genus.

We describe a new species in the group, Graf & Rázuri-Gonzales, , from the island of Corsica (France) based on a single male specimen. In addition to the morphological differences between the new species and the most similar species in the group, we also provide a phylogenetic tree based on the mitochondrial cytochrome oxidase subunit I (mtCOI), including sequences from 16 out of the 28 currently recognized species in the group. These data, together with conspecific larval sequences, support the status of the new species and shed light on an additional potential new species near . Using a low-cost next-generation sequencing approach, we generated the mito- and draft nuclear genome assembly of the holotype of as well as that of . This genetic data represents an important additional characterization to the description of morphological features and is valuable for future investigations, such as population or phylogenomic studies.