摘要: The genus Bolbochromus Boucomont, 1909 includes 3 subgenera(Bolbochromops Krikken & Li, 2013; Metabolbochromus Krikken & Li, 2013 and Bolbochromus Boucomont, 1909) and 27 species(Krikken & Li, 2013; Li et al., 2019; Selking, 2019). Its geographic distribution is known ranging eastward from India and Sri Lanka in the Himalayas to Southeast Asia, Southern China, the Greater Sunda Islands, the Philippines, and its neighboring islands(Li et al., 2013). The genus is distinguished from other beetles of Bolboceratinae by: imagoes body usually bicolored with brownish yellow or reddish-brown markings; body length 5.8–13.0 mm(Li et al., 2019); ocular canthi completely bisecting the eyes; arcuate anterior clypeal margin; pronotum lack tubercles(Krikken & Li, 2013); distal antennomere lacking grooves, and inner surface of first antennomere with a polished, glabrous disc(Selking, 2019). The members of Bolbochromus can be occasionally attracted to light(Krikken & Li, 2013), the feature can be used to set up flight interception traps to obtain specimens.

摘要: Four species of the genus Karstsinnectes, which live in dark, low-energy groundwater ecosystems, are currently recorded, mainly distributed in the upstream of the Pearl River, the Youjiang River and the Hongshui River. Completing biodiversity surveys is particularly difficult due to the particular cave habitats inhabited by these species. In this work,we describe a new cave fish of the genus Karstsinnectes, namely K. cehengensis Luo, Zhao &Zhou, sp. nov., collected from the Beipanjiang River, the upstream of the Hongshui River.Genetically, the four individuals of the new species form a phylogenetically separate lineage, as the sister clade of K. acridorsalis, with a 9.4–9.5% genetic difference in mitochondrial Cyt b.Morphologically, the new species can be distinguished from its congeners by a combination of the following morphological characteristics: body naked, without body color; eyes reduced,diameter 1.4–3.8% of head length; anterior and posterior nostrils adjacent, anterior nostril not elongated to a barbel-like tip; lateral line incomplete; caudal fin forked; dorsal-fin rays iii-7,pectoral-fin rays i-11–12, pelvic-fin rays i-7, anal-fin rays iii-5, with 14 branched caudal-fin rays. The discovery of this new species represents the northernmost distribution of species within the genus Karstsinnectes and the first record from Guizhou Province. All currently known species of this genus inhabited in caves, making them ideal organisms for studying historical river connectivity and cave formation process.

摘要: Each species within the order Thysanoptera has a distinct mitochondrial gene order displaying a high level of gene rearrangement, particularly massive in Phlaeothripidae. To understand the evolutionary patterns of rearrangement in this family, we sequenced the complete mitochondrial genome of Psephenothrips eriobotryae, a notable potential pest of loquat trees.Its mitogenome is a circular DNA molecule(15,413 bp in size) composed of 37 genes: 13 PCGs,22 tRNAs, two rRNAs, and two putative control regions(CRs). By comparing with the ancestral mitogenome of arthropods, P. eriobotryae exhibits notable gene rearrangement variations.However, it shares four conserved gene blocks with three closely related species in Phlaeothripinae. In the phylogenetic tree, P. eriobotryae was clustered with these three leaffeeding Phlaeothripinae species. The presence of more similar conserved gene blocks probably indicates a strong correlation between gene rearrangements and the phylogeny within Phlaeothripidae. Furthermore, the mitogenome of P. eriobotryae shows some characteristics:(a)two putative CRs in which CR2 is the copy of partial CR1 with 99.62% sequence similarity, and CR1 consists of two 237 bp repeat unites;(b) high A+T content of 82.6% in overall base composition;(c) trn S1 lacking a complete dihydrouridine(DHU) arm;(d) the protein coding gene, atp8 started with TTG instead of the more common ATN, while nad3 terminated by TAG rather than TAA;(e) translocations and inversions observed in fifteen of the 37 genes.

摘要: Three new spongillafly species of Sisyra Burmeister, 1839 from southern China and Laos are described, namely S. arcuata sp. nov., S. nobilia sp. nov., and S. stenoloma sp. nov.Notably, S. arcuata sp. nov. and S. nobilia sp. nov. have remarkable forewing marking pattern,which has never been reported in Sisyra. Additionally, the male of the rare species Sisyra yunana Yang, 1986 is described for the first time. All these Sisyra species have a highly specialized male gonocoxites 9.

摘要: Egyptian species of the leafhopper genus Exitianus Ball, 1929, E. capicola(St?l,1855), E. nanus(Distant, 1908), and E. pondus Ross, 1968 are reviewed. Illustrations,morphological descriptions, and a key for their identification are provided. In this study, we used molecular techniques to confirm morphological identification and detect phylogeny among the three Exitianus species. The partial nucleotide sequences of the amplified products obtained were determined by Macrogen Korea. The nucleotide sequences of 28S rDNA and COX genes of the EGY-ARC-9, EGY-ARC-4, and EGY-ARC-5 were determined by Macrogen Korea,blasted into BLAST at the National Center for Biotechnology Information website(NCBI) and compared with those deposited in the GenBank DNA database. The results represented the homology percentage between the partial sequences of the 28S rRNA and COX genes from each species and related species obtained from GenBank DNA database. The morphological identifications of the three Exitianus species were confirmed by molecular characterization and sequencing of 28S rDNA and COX genes and identified as E. capicola, E. nanus, and E. pondus.Also, their sequences of 28srDNA and COX genes were deposited in GenBank with an accession number(LC670610, LC670607, and OQ196105) for 28srDNA gene and(LC775357,LC775358, and LC775359) for the COX gene.

摘要: Eleven new species of Ourapteryx Leach, 1814 were described: O. curta Jiang &Han, sp. nov., O. triangulata Cheng & Han, sp. nov., O. cawarongensis Cheng & Jiang, sp.nov., O. arcuata Jiang & Cheng, sp. nov., O. longiacutata Jiang & Cheng, sp. nov., O.linzhiensis Jiang & Cheng, sp. nov., O. aniqiaoensis Cheng & Zhu, sp. nov., O. incurvata Cheng & Jiang, sp. nov., O. concava Cheng & Han, sp. nov., O. alba Cheng & Han, sp. nov., O.motuoensis Cheng & Zhu, sp. nov. Diagnoses for these new species are provided, with illustrations of external features and genitalia.

摘要: In order to investigate the biodiversity of free-living nematodes along the coast of the Yellow Sea, sediment samples were collected in a number of intertidal sites in recent years. In this area, the mean abundance of free-living nematodes is 1663±502 ind 10 cm^-2, and more than 200 species have been found（Zhai et al., 2020; Hao et al., 2021, 2022; Chu et al., 2023）. Among them, species from the genera, Daptonema, Thalassomonhystera, Parodontophora and Bathylaimus, are the most common, while the species, Daptonema parabreviseta Huang & Sun, Parodontophora deltensis Zhang, Bathylaimus huanghaiensis Huang & Zhang and Thalassomonhystera siamensis Kito & Aryuthaka are in dominant. Here, a species belongs to the genus Ethmolaimus is identified as new to science, namely E. multispiralis sp. nov. It is also the first time for the genus reported in the Chinese sea area.

摘要: The family Rhyscotidae Budde-Lund, 1904 contains two genera: Rhyscotoides Schmalfuss & Ferrara, 1978 and Rhyscotus Budde-Lund, 1885. To date, twenty-one species within the family are known, occurring in the subtropic and tropic regions(Schmalfuss, 2003; Schmidt, 2003; Boyko et al., 2022). The members of the family can be recognized by the cephalon with a strongly inflated frons, the antennae with two-jointed flagellum, the maxillae are almost semicircular, the maxillipeds have short palpus and endite, and pleopod exopodites without pseudotracheae(Schmalfuss & Ferrara, 1978). Before this study, the members of Rhyscotidae were unknown in China. The present research describes a new species of the genus Rhyscotus from Hainan Island, representing a new record of the family Rhyscotidae from China.

摘要: 描记沟顶叶蝉属2新种：Bhatia parasagittata Lu&Zhang sp. nov.和Bhatia loba Lu&Zhang sp.nov.。基于尾节侧瓣具1尾节突和前腿节腹面有几个粗短刚毛等特征，提出了管茎叶蝉属的1个新组合Fistulatus longiradiatus comb. nov.,并提供了沟顶叶蝉属和管茎叶蝉属的名录和检索表。

摘要: 报道中国云南萨袖蜡蝉属3新种：六角萨袖蜡蝉Saccharodite sexangula sp. nov.，菱形萨袖蜡蝉Saccharodite rhomboidea sp. nov.和三角萨袖蜡蝉Saccharodite triangula sp. nov.。提供了该属中国名录，编制了分种检索表。