Two new species of the phoxocephalid subfamily Harpiniinae are described from the easternmost sector of the Clarion-Clipperton Zone. The material examined was collected with epibenthic sledges during the projects ABYSSLI...Two new species of the phoxocephalid subfamily Harpiniinae are described from the easternmost sector of the Clarion-Clipperton Zone. The material examined was collected with epibenthic sledges during the projects ABYSSLINE-2, MANGAN 2016 and MANGAN 2018 from depths ranging from 4133 to 4359 metres. . is mainly characterized by: head anteroventral corner with a small projection; gnathopod 1 coxa anteroventrally produced; pereopod 6 basis with posterior proximal expanded lobe; and epimeron 3 posteroventral corner rounded. . can be diagnosed by: head anteroventral corner with a large projection; mandible palp article 2 shorter than article 3; gnathopods 1-2 palm defined by a subacute hump; pereopod 6 basis with a posterior distal lobe reaching the apex of ischium; and epimeron 3 posteroventral corner produced as a slightly curved spine. Here, we provide the deepest record of the known species and the first record from the Pacific abyssal plain.
A rarely reported new species of Mimallonidae from Florida, USA, is described. Remarkably, the distinctive new species has not been seen across much of its historical range since the 1960s, and all records come from six...A rarely reported new species of Mimallonidae from Florida, USA, is described. Remarkably, the distinctive new species has not been seen across much of its historical range since the 1960s, and all records come from six somewhat isolated white sand Florida Scrub habitats, one of which is completely destroyed and most others clearly imperiled. DNA barcoding sequences from the disparate populations suggest notable genetic diversity in the few known populations, meaning extirpation of any of them could signal loss of critical population structure of an already narrowly endemic species. St Laurent, . is compared to the only other similar species in North America, (Harris in Doubleday), a common denizen of oak forests throughout the eastern United States, including Florida, southern Canada, and the Rocky Mountains. Until its distribution and life history are more well-understood, will remain an enigmatic taxon of major conservation concern.
. is described from Yunnan Province, China, based on dealate neosomic females extracted from the base of the ear of the lesser brown horseshoe bat, K. Andersen, 1905; it is the first record of a species of Adensamer, 1.... is described from Yunnan Province, China, based on dealate neosomic females extracted from the base of the ear of the lesser brown horseshoe bat, K. Andersen, 1905; it is the first record of a species of Adensamer, 1896 from this bat. Morphological evidence is further supported by molecular data from the cytochrome () and cytochrome oxidase subunit I () genes. A detailed comparison of the new species with related species is provided, and the new species is accommodated in the most recent key to the world species of .
Two new species of the genus Young, 1986 from China are described and illustrated: Zhong & Yang, . and Zhong & Yang, . Voucher specimens of the new taxon are curated at the Institute of Entomology, Guizhou University,...Two new species of the genus Young, 1986 from China are described and illustrated: Zhong & Yang, . and Zhong & Yang, . Voucher specimens of the new taxon are curated at the Institute of Entomology, Guizhou University, Guiyang, China (GUGC). A revised key to species from China is also provided.
Three new species of the copepod family Canuellidae Lang, 1944 (Copepoda, Canuelloida) are described from the Western Pacific Ocean, based on specimens collected from coastal waters of Korea (Jeju-do Island) and the Repu...Three new species of the copepod family Canuellidae Lang, 1944 (Copepoda, Canuelloida) are described from the Western Pacific Ocean, based on specimens collected from coastal waters of Korea (Jeju-do Island) and the Republic of Palau. This study provides detailed morphological descriptions and illustrations for ., ., and . Key diagnostic characters differentiating them from congeners include the unique bulbous modification of caudal ramal seta IV in ., the presence of an inner seta on the P1 exopod-2 in ., and features including reduced urosome segmentation and a modified female caudal seta II that place . within the -group. Molecular phylogenetic analysis using mitochondrial cytochrome oxidase subunit I (COI) and nuclear 18S ribosomal RNA (18S rRNA) sequences recovers each new species as a distinct, well-supported lineage and resolves two major clades within Canuellidae: ( + ) and ( + ). The phylogeny further indicates that and are sister taxa, and places . within the -group; however, the placement of . as sister to is weakly supported (57% bootstrap). These findings significantly advance our understanding of Canuellidae diversity and evolution in the understudied Western Pacific region.
A new nanophyine genus, Wang & Alonso-Zarazaga, ., with two new species Wang & Alonso-Zarazaga, . (type species) and Wang & Alonso-Zarazaga, ., are described. The diagnostic characters of the new genus and species are...A new nanophyine genus, Wang & Alonso-Zarazaga, ., with two new species Wang & Alonso-Zarazaga, . (type species) and Wang & Alonso-Zarazaga, ., are described. The diagnostic characters of the new genus and species are provided. Keys to the male and female of the species and host data are presented.
Only one species of the subgenus Pseudolimnophila (Pseudolimnophila) Alexander, 1919 was previously known from northern China. Herein, two new species from northern China are described: Pseudolimnophila (Pseudolimnophila...Only one species of the subgenus Pseudolimnophila (Pseudolimnophila) Alexander, 1919 was previously known from northern China. Herein, two new species from northern China are described: Pseudolimnophila (Pseudolimnophila) chanbaensis Shui, Zhang B. & Yang, . and P. (P.) shanxiensis Shui, Zhang B. & Yang, . Additionally, P. (P.) inconcussa (Alexander, 1913) is reported for the first time from Shaanxi Province and redscribed. A key to the species of the subgenus occurring in China is provided.
Young species radiations are valuable from an evolutionary perspective, as they can reveal traits involved in species formation, but they are challenging for taxonomists due to discordance among independent lines of evid...Young species radiations are valuable from an evolutionary perspective, as they can reveal traits involved in species formation, but they are challenging for taxonomists due to discordance among independent lines of evidence. The present study integrates morphologic, ecological, and phylogenetic data to resolve delimitation of species within the geometrid moth genus Lederer, 1853, with a particular focus on the closely related species pair Staudinger, 1892 and Brandt, 1938. Our findings revealed significant ecological niche differentiation across the Iranian mountain ranges between the range of taxa distinguished by morphology and DNA barcodes. While individual gene trees from mtCOI and nuclear loci showed conflicting results regarding species boundaries, our multispecies coalescent analyses support the distinction of taxa with different female genitalia characters. Our study highlights how the combination of morphological, genetic, and ecological data helps to define the boundaries between closely related species, to solve taxonomic uncertainties in regions with a complex evolutionary background.
Huang & Kawai, 2025 was recently described based on four female specimens from the Paracel Islands in the South China Sea, and distinguished from Ng, Sidabalok & Nguyen, 2025 from Vietnam, by 14 morphological characters...Huang & Kawai, 2025 was recently described based on four female specimens from the Paracel Islands in the South China Sea, and distinguished from Ng, Sidabalok & Nguyen, 2025 from Vietnam, by 14 morphological characters, with the primary ones being the body size and shape, pleotelson-size ratio and structure of the spines, as well as the numbers of uropod robust setae and their shape. Morphological comparisons of the type specimens of both species show that none of these characters are valid, with the two species also share nearly identical COI and 16S mitochondrial DNA sequences. As such, is here regarded as a junior synonym of .
The article presents an updated checklist and a catalogue of Fulgoromorpha and Cicadomorpha of Lithuania based on analysis of published records, material preserved in available institutional and private collections of La...The article presents an updated checklist and a catalogue of Fulgoromorpha and Cicadomorpha of Lithuania based on analysis of published records, material preserved in available institutional and private collections of Latvia, Lithuania, and Estonia, and material collected between 2017 and 2025 from various regions of Lithuania. A total of 360 species belonging to 147 genera of Fulgoromorpha and Cicadomorpha are confirmed for the Lithuanian fauna; 20 species are reported in this article for the first time from Lithuania, four of which are newly recorded in the Baltic States.
For decades, populations of the suck-loach genus from the Jiulongjiang River in Fujian Province, China, have been identified as , a species originally described from in a separate coastal drainage basin in Fuqing County...For decades, populations of the suck-loach genus from the Jiulongjiang River in Fujian Province, China, have been identified as , a species originally described from in a separate coastal drainage basin in Fuqing County. Employing an integrative taxonomic approach combining morphological and molecular phylogenetic analyses, we demonstrate that the Jiulongjiang River population represents a distinct species, formally described here as . It is diagnosed by a combination of characters: 13 rostral barbels arranged in two rows, a distinct straight, dark, longitudinal stripe along the lateral line, and an emarginate caudal fin. Phylogenetic analyses consistently recover it as a unique evolutionary lineage showing significant genetic divergence from true , with a Kimura 2-parameter distance of 4.16%. The description of clarifies the taxonomic status of the Jiulongjiang River population and enhances our understanding of species diversity and biogeography of in the coastal drainages of southeastern China.
Two new planthopper species of the family Issidae, tribe Sarimini are described from Central Vietnam. Constant & Pham, . from Hon Ba Nature Reserve in Khanh Hoa Province, represents the second species of the genus Gnez...Two new planthopper species of the family Issidae, tribe Sarimini are described from Central Vietnam. Constant & Pham, . from Hon Ba Nature Reserve in Khanh Hoa Province, represents the second species of the genus Gnezdilov & Bourgoin, 2014 so far known only from Hon Ba, and Constant & Pham, . from Hon Ba Nature Reserve, Nui Chua National Park in Khanh Hoa Province and Ta Kou Nature Reserve in Binh Thuan Province, represents the first record of the genus Chang & Chen, 2020 in Vietnam. Illustrations of habitus and terminalia of the new species are given as well as a distribution map and photographs of live specimens and their habitat.
A new hypotrich ciliate, ., was isolated from a sandy beach in Wenzhou, China. Its morphology was investigated using detailed live observation and protargol staining, and its phylogenetic position was assessed through s...A new hypotrich ciliate, ., was isolated from a sandy beach in Wenzhou, China. Its morphology was investigated using detailed live observation and protargol staining, and its phylogenetic position was assessed through small subunit ribosomal DNA (SSU rDNA) sequence analyses. The new species is characterized as follows: size in vivo 90-115 × 40-50 µm; body shape elliptical and dorsoventrally flattened; 2-4 globular macronuclear nodules; 8-14 midventral cirral pairs; colourless cortical granules (about 0.5 µm in diameter) arranged in short longitudinal rows. Phylogenetic analyses robustly placed . within a clade containing Li et al., 2011a and Xu et al., 2011. However, it differs from these congeners by having 13 and 14 nucleotides in its SSU rDNA sequence, respectively, supporting its status as a distinct species. Morphologically, . can be distinguished from related species by its body size, number of macronuclear nodules, transverse cirri count, and cortical granulation distribution. This study provides comprehensive morphological and molecular data establishing foundational references for resolving the apparent polyphyly of . While full resolution may require integration of additional evidence (e.g. morphogenetic data or TEM ultrastructure), our dataset delivers essential comparative frameworks for future taxonomic revisions.
A new lefteye flounder, ., is described based on five specimens collected from Penghu Islands. This new species differs from the other four congeners by having a pair of small black spots on the caudal fin, a horizontal...A new lefteye flounder, ., is described based on five specimens collected from Penghu Islands. This new species differs from the other four congeners by having a pair of small black spots on the caudal fin, a horizontal triangular bluish-black marking on the blind side of body in male, the front wings of the marking reaching the base of dorsal and anal fins, and a combination of morphometric characters, including a larger head, deeper body, smaller eyes, fewer dorsal- and anal-fin rays and lateral-line scales, and other characters. A key to all five nominal species of is provided.
Based on the male genitalia, five new leafhopper species of , Ran & Song, ., Ran & Song, ., Ran & Song, ., Yuan & Song, . and Yuan & Song, ., are described and illustrated. The collecting localities are as follows:...Based on the male genitalia, five new leafhopper species of , Ran & Song, ., Ran & Song, ., Ran & Song, ., Yuan & Song, . and Yuan & Song, ., are described and illustrated. The collecting localities are as follows: . from Pa Hin Ngam National Park, Dipterocarp forest, Chaiyaphum Province, Thailand; . from Namtok Mae Surin National Park, Haad Saen/Huai Fai Kor Reservoir, Mae Hong Son Province, Thailand; . from Tat Tone National Park, Dry Dipterocarp Forest, Chaiyaphum Province, Thailand; . from Chae Son National Park, Spa/roadside, Lampang Province, Thailand; and . from a botanic garden near the entrance to Andasibe National Park, Toamasina Province, Madagascar.
A checklist of marine fishes from the Colombian Pacific is presented based on an appraisal of local inventories published in peer-reviewed journals and validation of records with voucher specimens deposited in Colombian...A checklist of marine fishes from the Colombian Pacific is presented based on an appraisal of local inventories published in peer-reviewed journals and validation of records with voucher specimens deposited in Colombian marine fish collections and photographic records. Unpublished information collected over several years by the authors is also included. An exhaustive re-evaluation of the taxonomy of all species present in the area was also carried out. As a result, 727 species were confirmed, representing close to 50% of the 1,468 shallow water fish species reported from the Eastern Tropical Pacific (ETP). The diversity of marine fishes in Colombia was classified into three classes, 60 orders, 149 families, and 412 genera. Of these classes, only one species belongs to Myxini (hagfishes), 64 to Chondrichthyes (sharks, rays, and chimaeras), and 663 to Actinopterygii (bony fishes). In addition, 35 new records are presented for the Pacific of Colombia. Finally, all this diversity is characterized according to different ecological variables such as depth and bottom preference, among others, with the following results: 43% of all the species are benthopelagic, 54% of which are predominantly soft bottom dwellers. A total of 283 bony fishes (39% of all the species) are considered to have commercial value or are involved in some trade. Additionally, a list of 77 species that have only been recorded in larval stages is also presented. This comprehensive list provides a valuable resource for future research, conservation efforts, and fisheries management in the Colombian Pacific.
This study describes a new millipede species of the genus from China: ., and provides an identification key to all 19 species currently known from China. A systematic review was conducted on the 34 described species,...This study describes a new millipede species of the genus from China: ., and provides an identification key to all 19 species currently known from China. A systematic review was conducted on the 34 described species, and these species were classified into five categories based on the morphology of the male gonopod. The complete mitochondrial genome of this new species was sequenced and annotated for the first time, representing the first mitogenomic data reported for the genus . The mitogenome of . is 14,954 bp in length, containing 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and a control region, with an overall A+T content of 65.8%. All 37 mitochondrial genes are encoded on the Heavy strand. The results help clarify the confused species relationships within and provide fundamental data for phylogenetic studies of Xystodesmidae.
Two new species of the genus Bourgeois, 1879, . and ., are described from Bach Ma National Park, central Vietnam. Kazantsev, 2017 is recorded from Vietnam for the first time, found in Phia Oac-Phia Đen National Park,...Two new species of the genus Bourgeois, 1879, . and ., are described from Bach Ma National Park, central Vietnam. Kazantsev, 2017 is recorded from Vietnam for the first time, found in Phia Oac-Phia Đen National Park, Cao Bang province, in northern Vietnam. This addition to the fauna of the region complements the recently published review of of Indochina, increasing the number of its species to 92, and the number of species registered in Vietnam, with the discovery of a species previously known only from Yunnan, to 73. A full list of species of Vietnam is provided.
., the first species of the genus Melander, 1902, recorded from the Palearctic Region, is described based on four female and one male specimens collected in Korea. Our discovery of the species from Korea documents an u...., the first species of the genus Melander, 1902, recorded from the Palearctic Region, is described based on four female and one male specimens collected in Korea. Our discovery of the species from Korea documents an unusual trans-Pacific distribution of the genus previously known only from the Neotropical Region. The systematic affinities of the new species with the Neotropical is supported by a phylogenetic analysis based on the mitochondrial cytochrome oxidase subunit I (COI) gene sequences. An updated checklist and identification key to the world species of is provided, and morphological characters distinguishing the new species from its congers are discussed. . is morphologically most similar to Ale-Rocha, 2008, from Paraná, Brazil, for which holotype images are presented for comparison. In addition, the generic placement of Melander, 1928, from the Philippines-which was previously transferred to Loew, 1857, and was given the new name, Ale-Rocha, 2008-is discussed based on examination of holotype images. These findings confirm . as the first unequivocal record of from the Old World.
. represents the first formally described species of Islamiinae from the Caucasus, extending the distribution of this subfamily far beyond its traditionally outlined Mediterranean range. The new taxon was discovered duri.... represents the first formally described species of Islamiinae from the Caucasus, extending the distribution of this subfamily far beyond its traditionally outlined Mediterranean range. The new taxon was discovered during fieldwork in 2021-2022 in Mandaeti village, Imereti, Georgia. Morphological examination of seven ethanol-preserved specimens and six empty shells, combined with phylogenetic analysis, confirms its distinct taxonomic status. The genus is characterized by an elongate-conical shell with up to 5.2 whorls, trilobate penis morphology, and the absence of a bursa copulatrix in the female reproductive system. Phylogenetic reconstruction places . within a highly supported clade as sister to (Möllendorff, 1873) and Bodon & Cianfanelli, 2004. The species is known from two spring localities 1.7 km apart, confirming its critically restricted stygobiont distribution. The findings highlight the taxonomic instability of Islamiinae, which appears paraphyletic in molecular analyses; the Caucasian lineage of . further underscores the need for a comprehensive systematic revision. The localized distribution and anthropogenic pressures warrant conservation consideration.