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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.

This study presents a description of a new stick insect species belonging to the genus Trychopeplus Shelford, 1909, discovered by the authors in the Chocó ecoregion of northwestern Ecuador. Trychopeplusmashpiensis sp. nov. 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 Trychopeplus species. These findings enhance our understanding of the genus's diversity.

Dryadaulaepischista (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 Dryadaulaorientalis Park & Yagi, sp. nov., a new species from Japan that closely resembles D.epischista. The adults and genitalia of the two species are illustrated. The genitalia of D.epischista from a specimen collected at the type locality are shown for the first time. DNA barcodes of the two Dryadaula species and the genetic distances of barcode regions among them and other congeners are provided.

In this study, three new bamboo-feeding species of the genus Bambusiphaga Huang & Ding, 1979 (Hemiptera, Fulgoroidea, Delphacidae, Tropidocephalini), B.caudospina Lv, Li & Chen, sp. nov., B.laterospina Lv, Li & Chen, sp. nov. and B.striola Lv, Li & Chen, sp. nov. from Southwest China, are described and illustrated, bringing the total number of species in the genus to 34. An updated identification key and checklist to all known species of Bambusiphaga are provided.

A new species of Proaphelinoides Girault, Proaphelinoideshuangi Chen & Jiang, sp. nov., 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 Proaphelinoides were sequenced, and 28S-D2 rDNA was included in a phylogenetic analysis, confirming Proaphelinoides as the sister group to Aphytis.

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 Boreolimnus gen. nov. in the tribe Paralimnini, as Boreolimnusincisurus (DeLong) comb. nov. Cribrusmicmac Hamilton, 1987 is a junior syn. nov. of B.incisurus. Due to historic confusion, the species currently placed in Cribrus Oman, 1949 were also reviewed. Cribrusconcinnus (Sanders & DeLong, 1917) is redescribed, and a lectotype is designated to clarify the application of the name. Deltocephalusplagus Ball & DeLong, 1926 and Laevicephalusshingwauki Beamer & Tuthill, 1934 are recognized as junior syn. nov. of C.concinnus, now the only recognized species in the genus.

Two xyleborine ambrosia beetles, Eccoptopterusformosanus sp. nov. and E.intermedius sp. nov. are described from Taiwan and Thailand, respectively, based on DNA sequences (COI and CAD) and morphological characteristics. A key to the Eccoptopterus species of Southeast Asia is provided.

Fauna inventories reduce biodiversity knowledge gaps by providing comprehensive data on species distribution, richness, and abundance. Furthermore, they identify undocumented species and enhance understanding of ecosystem dynamics and conservation needs. The richness and abundance of amphibian species were studied in two Semideciduous Seasonal Forest areas in the municipalities of Potiraguá (Serra Azul) and Itarantim (Serra do Mandim) in southwestern Bahia, Brazil. Active visual and acoustic surveys were conducted in 24 forest interior transects, two stream transects, and two permanent ponds investigated in the study area. Opportunistic encounters during team movements were also recorded. The richness was 46 amphibian species distributed in 14 families and 26 genera. Approximately half of the species were shared between the two areas, while 11 species were exclusive to Serra Azul and another nine were found only in Serra do Mandim. Cluster analysis for 42 locations in Atlantic Forest, Caatinga, and Cerrado, in a presence/absence matrix with 216 species, revealed that the composition of the amphibians found in Serra do Mandim and Serra Azul is similar to other sampled locations in the northeastern region of Minas Gerais, close to the study site, which are considered transitional between the Atlantic Forest and the Caatinga. Our results demonstrate that the remaining forest fragments in the region, although small and isolated, still sustain a high richness of amphibians with species restricted to the Atlantic Forest and Bahia, such as Bahiusbilineatus, Ololygonstrigilata, Aplastodiscusweygoldti and Vitreoranaeurygnatha, and others considered typical of the Caatinga, such as Leptodactylustroglodytes and Physalaemuscicada. Additionally, we sampled potential new species, filled occurrence gaps, and expanded the geographical range of Pseudisfusca.

Five new species of the genus Phaenocarpa Foester, 1863 (Braconidae: Alysiinae) are described and illustrated: P.acutidentata Sohn & van Achterberg, sp. nov., P.tacitoides Sohn & van Achterberg, sp. nov., P.setosa Sohn & van Achterberg, sp. nov., P.tanycauda Sohn & van Achterberg, sp. nov., and P.angusticeps Sohn & van Achterberg, sp. nov. Additionally, P.tacita Stelfox, 1941 is recorded for the first time from South Korea. The barcode region of mitochondrial cytochrome c oxidase I (COI) was also analyzed for the seven congeneric species including one from GenBank. In addition, an identification key for the Phaenocarpa species recorded in Korea is provided.

Seven species of the crab-spider family Thomisidae from Medog, Xizang, China are described here, including six new species: Camaricusmedog Wang, Lu & Zhang, sp. nov. (♂♀), Monaesesxizang Wang, Lu & Zhang, sp. nov. (♂♀), Sinothomisusbeibeng Wang, Lu & Zhang, sp. nov. (♂♀), Sinothomisusdawai Wang, Lu & Zhang, sp. nov. (♂♀), Spilosynemamotuo Wang, Lu & Zhang, sp. nov. (♂♀), and Thomisusyarang Wang, Lu & Zhang, sp. nov. (♂♀). The male of Phartaxizang Liu & Yao, 2023 is described here for the first time. Descriptions and photographs of all the species are provided.