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In this study, the two Oxycarenidae species, O.gossypii Horváth, 1926 and Oxycarenusbicolorheraldus Distant, 1904, are redescribed, and their complete mitogenomes are sequenced and analyzed. The phylogeny of Lygaeoidea is examined using 45 complete mitogenomes of lygaeoid species and four outgroup species. The gene orientation and arrangement of the two mitogenomes are found to be consistent with typical Lygaeoidea mitochondrial features, comprising 37 genes, including 13 PCGs, 22 tRNAs, 2 rRNAs, and a control region. Nucleotide composition of the species was biased towards A and T, with the gene order identical to the putative ancestral arrangement of insects. Start codons, stop codons, RNAs, relative synonymous codon usage (RSCU), and nucleotide diversity (Pi) of Oxycarenidae exhibited characteristics similar to other families in Lygaeoidea. Bayesian-inference (BI) and maximum-likelihood (ML) methods were employed to investigate phylogenetic relationships using PCG datasets from selected species. Phylogenetic analyses reveal slightly different topologies between BI and ML methods, with variation primarily concentrated in Colobathristidae and Rhyparochromidae. Our study confirms that the two sequenced Oxycarenidae species formed a single clade, and the position of Oxycarenidae remains stable in both ML and BI phylogenetic trees. These findings expand the mitochondrial genome databases of Lygaeoidea and provide valuable insights into the phylogenetic relationships within Lygaeoidea or Pentatomomorpha.

Two new species of Eupolyphaga (E.bicolor Han, Che & Wang, sp. nov. and E.nigra Han, Che & Wang, sp. nov.) and six new species of Pseudoeupolyphaga (P.flava Han, Che & Wang, sp. nov., P.deficiens Han, Che & Wang, sp. nov., P.magna Han, Che & Wang, sp. nov., P.longiseta Han, Che & Wang, sp. nov., P.latizona Han, Che & Wang, sp. nov., and P.baimaensis Han, Che & Wang, sp. nov.) are described and illustrated. The female external genitalia and spermathecae of these two genera are reported and the role of these characters in species delimitation is discussed.

A recently published molecular phylogenetic analysis, focusing on selected Western Atlantic subspecies of Acetesamericanus Ortmann, 1893 and allies, was inconclusive about relationships among these members. This previous study found three groups that split into two distinct lineages: Acetesamericanus (Brazil 1) (= A.americanus sensu stricto) and Acetesamericanus (Brazil 2) + A.americanus (USA). Combined morphometry and molecular analyses applied to members of the group Acetesamericanus (Brazil 2) revealed a new unidentified species genetically related to the A.americanus representatives. However, at that time, no conclusive morphological characters were found to identify it. In the present study, following an in-depth morphological analysis of specimens from the three groups, including data on the type series and consideration of the subtle distinctions of members of each lineage, morphological features of the reproductive structures (petasma and genital sternite) were found to characterize the new species, which is formally described and named herein.

A new species of the genus Acrossus Mulsant, 1842, Acrossusbaei sp. nov. from South Korea, is described and illustrated on the basis of morphology and mitochondrial COI sequences. The species was compared with four related species; Acrossusatratus (Waterhouse, 1875), A.humerospinosus (Petrovitz, 1958), A.luridus (Fabricius, 1775), and A.superatratus (Nomura & Nakane, 1951). The taxonomic status and diagnostic characters of the new species are discussed. A key to species of the genus Acrossus in the Korean Peninsula is given.

After a comprehensive taxonomic assessment of descriptions/ illustrations of all known (118) species of the spider mite genus Schizotetranychus Trägårdh (Acari: Prostigmata: Tetranychidae), five species groups are proposed based on the number of tactile setae on tibia II in female, i.e., vermiculatus with four setae (four spp.), schizopus with five setae (52 spp.), spireafolia with six setae (10 spp.), asparagi with seven setae (20 spp.), and bambusae with eight setae on tibia II (22 spp.). The species group schizopus is further divided into three species subgroups based on tactile setae on tibia I: schizopus with eight/ nine setae (21 spp.), andropogoni with seven setae (26 spp.), and taquarae with six tactile setae excluding the solenidion on tibia I (five spp.). Eight Schizotetranychus species were not assigned to any species group because of brief descriptions and/ or illustration and without information on the number of tactile setae on tibiae I and II. Moreover, two Schizotetranychus species, S.gausus Baker & Pritchard and S.luculentus Tseng that have six setae/ structures including a spinneret and a solenidion on the palp tarsus, are provisionally transferred to the genus Stigmaeopsis Banks. Finally, keys to species groups and subgroups of the world species of Schizotetranychus are provided.

A new karst-dwelling bent-toed gecko of the Cyrtodactylusintermedius group is described from Khlong Hat District, Sa Kaeo Province, eastern Thailand, based on an integrative taxonomic analysis of genetic data and morphological characteristics. Phylogenetic analyses using the mitochondrial NADH dehydrogenase subunit 2 (ND2) gene revealed that topotypes of C.intermedius were sister to a clade containing C.kulenensis from Cambodia, an unnamed lineage from Sakaerat Biosphere Reserve in Nakhon Ratchasima Province, Thailand, and the Khlong Hat lineage described here as Cyrtodactyluskhlonghatensis sp. nov. Multivariate analyses of morphometric and meristic characters showed that C.khlonghatensis sp. nov. is morphologically distinct from all other species in the group by having the combination of SVL 76.5-82.8 mm in adult males and 88.5 mm in an adult female; eight supralabial and nine infralabial scales; 30-32 paravertebral tubercles; 20 or 21 longitudinal rows of dorsal tubercles; 43 or 44 ventral scales; seven or eight expanded subdigital lamellae on the 4^th toe; 12 unmodified subdigital lamellae on the 4^th toe; 19 or 20 total subdigital lamellae on the 4^th toe; 31 or 32 total number of enlarged femoral scales; enlarged femoral and precloacal scales continuous; 6-8 pore-bearing precloacal scales in males; three or four rows of enlarged post-precloacal scales; 1-3 postcloacal tubercles; proximal femoral scales less than one-half the size of distal femoral scales; absence of interdigital pocketing between digits of forefeet and hindfeet; and posterior border of the nuchal loop rounded. Uncorrected pairwise genetic divergences (p-distances) between the new species and other species of the intermedius group ranged from 4.73-22.55%. The discovery of this new species exclusively in isolated karst formations from the Thai-Cambodia border suggests that there may be further undiscovered Cyrtodactylus in unexplored karst landscapes along the border of eastern Thailand and western Cambodia.

Four new species of Yunguirius B. Li, Zhao & S.Q. Li, 2023 are described from China, namely: Yunguiriusparvus Wei & Liu, sp. nov. (♀), Yunguiriustrigonus Wei & Liu, sp. nov. (♀), Yunguiriuswangqiqiae Wei & Liu, sp. nov. (♀), and Yunguiriusxiannushanensis Wei & Liu, sp. nov. (♀).

The genus Salicarus Kerzhner, 1962 is revised, with differential diagnoses and redescriptions provided for nine species. Three distinct species groups were recognized within the genus: S.nitidus group (S.cavinotum, S.genistae, S.nitidus, S.perpusillus), S.roseri group (S.concinnus, S.roseri, S.urnammu), and S.fulvicornis group (S.halimodendri, S.fulvicornis). A key to species, illustrations of dorsal habitus, male and female genitalia, and selected diagnostic structures are included. Additionally, available host information and distributional records are summarized. Phoenicocorisqiliananus Zheng, 1996 is synonymized with Salicarushalimodendri V. G. Putshkov, 1977.

This paper revises the genus Eurhaphidophora from China and describes a new species, i.e., Eurhaphidophoradulongjiangensis Zhu & Shi, sp. nov. The females of Eurhaphidophoratarasovidoitungensis Dawwrueng, Gorochov & Suwannapoom, 2020 and Eurhaphidophorafossa Lu, Huang & Bian, 2022 are described for the first time. Moreover, Eurhaphidophoracurvata Lu, Huang & Bian, 2022, syn. nov. is considered as a new synonym of Eurhaphidophorapawangkhananti Dawwrueng, Gorochov & Suwannapoom, 2020. Images illustrating the morphology of these species are provided.

In Mexico, land use changes have significantly impacted the diversity of amphibians and reptiles in a negative way. In light of this, we evaluate the alpha and beta components of the taxonomic diversity of amphibians and reptiles in a heterogeneous landscape in west-central Mexico. Additionally, we provide a checklist of amphibian and reptile species recorded over nine years of observations within the studied landscape and surrounding areas. The land cover/use types with the highest species richness and alpha taxonomic diversity differed between amphibians and reptiles. Overall beta taxonomic diversity was high for both groups, but slightly higher in reptiles. This taxonomic differentiation mainly corresponded to a difference in the turnover component and was greater in pristine habitats compared to disturbed ones. The checklist records 20 species of amphibians (ten of which are endemic) and 48 of reptiles (30 endemics). Additionally, the study expands the known geographical distribution range of one species of frog and three species of snakes. Our findings suggest that heterogeneous landscapes with diverse land cover/use types can provide essential habitats for the conservation of amphibian and reptile species.