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Pseudosteringophorus profundis sp. nov. a new species of deep-sea digenean, parasitizing the gallbladder of the “Bigeye grenadier” (Macrourus holotrachys Günther, 1878) in the dee…

Solenogastres is a group of mollusks with evolutionary and ecological importance. Nevertheless, their diversity is underestimated and knowledge about the distribution of the appro…

Flies belonging to the families Streblidae and Nycteribiidae are highly specialized arthropods that feed on the blood of bats. Their morphology varies and has adapted throughout t…

In the present study, the rare true bug Bannacoris hyalinus (Schaefer & Ashlock, 1970), comb. nov. (Hemiptera, Heteroptera, Pentatomomorpha, Pentatomoidea, Saileriolidae), which i…

Seamounts are biodiversity hotspots that face increasing threats from anthropogenic activities. Seamounts host diverse sessile suspension-feeding organisms such as sponges and ant…

The relationship of Xylomoia strix Mikkola, 1980; Xylomoia retinax Mikkola, 1998; and Xylomoia stangelmaieri Mikkola, 1998 is reconsidered based on 59 genitalia slides (37 males a…

Three species of the spider family Philodromidae are reported from the south of China. A new genus, Sinodromus gen. nov., is described from Jiangxi, Fujian, and Hunan Provinces. I…

A new species of the family Calliopiidae was collected from the East Sea of Korea. Calliopius ulleungensis sp. nov. is similar to C. columbianus Bousfield & Hendrycks, 1997 in hav…

Twenty-one new species of jumping spiders from five provinces of South China are described: Cheliceroides jinxini sp. nov. (♂), Dendroicius qiong sp. nov. (♂♀), Icius deergong sp.…

In this study, we describe and illustrate a new species of the genus Laena Dejean, 1821, Laena costata sp. nov., which was collected in Micangshan Nature Reserve of Sichuan Provin…

Six new species of the genus Paederus Fabricius, 1775 from China are described: P. chentangus sp. nov. (Xizang: Chentang), P. mirus sp. nov. (Xizang: Xiayadong), P. songi sp. nov.…

The order Polycladida (Platyhelminthes) in Mexico has historically received limited attention from researchers, primarily due to challenges associated with its low detectability a…

Beetles (Coleoptera) have been surveyed in Armenia and other Transcaucasian countries since the first half of the 19th century. Based on the literature reports and our new data, a…

An annotated checklist of the Sarcophagidae of Jamaica is presented based on material collected from 2018 to 2024, supplemented with specimens in museum collections as well as lit…

A fundamental prerequisite for understanding and protecting biodiversity is the construction of a high-quality faunal database. The primary objective of this study was to address …

The final instar larva of the rare species Platycnemis phasmovolans Hämäläinen, 2003 is described and illustrated here for the first time, including a new distribution record from…

In this study, the complete mitochondrial genome of Lepidocephalichthys berdmorei was first determined by the primer walking sequence method. The complete mitochondrial genome was…

A new species of jawfish genus Opistognathus is described based on a specimen collected from a beach in the Peng-hu Islands during a cold snap. The new species, Opistognathus cryo…

A new species of beardfish, genus Polymixia, is described based on three specimens collected in Taiwanese waters and off the Chesterfield Islands of New Caledonia. It can be disti…

The large-mouth pricklefish, Malacosarcus macrostoma (Günther, 1878), previously known from five specimens collected from the central Pacific Ocean, is redescribed based on three …

Examination of the type series of Lestidium japonica Tanaka reveals that the generally accepted concept of this species does not accord with the type series. A historical review o…

Two new species of dark-body snake eels are described based on specimens collected from Taiwan. Ophichthus kbalanensis sp. nov. has a long tail; dorsal-fin origin above posterior …

The slender snake eel genus Yirrkala from Taiwan is reviewed, and a total of four species are recognized, including a new species described here. Yirrkala nkust sp. nov. is descri…

A unique species of the flappy-snake eel genus, Phyllophichthus diandrus sp. nov., is described based on a single specimen (270 mm in total length) collected from Dong-gang, south…

A new estuarine moray eel, Uropterygius hades sp. nov., is described based on 14 specimens from Japan, Taiwan, the Philippines, southern Indonesia, and Fiji. It is a small-bodied,…

Yilan, Taiwan is the first place in East Asia where freshwater glass eels, the juvenile stage of Anguilla species, arrive by ocean currents. We collected glass eels by fyke net in…

Four new species of the genus Trilacuna Tong & Li, 2007, Trilacuna guangwu Ma & Tong, sp. nov. (♂), Trilacuna qingliangfeng Ma & Tong, sp. nov. (♂♀), Trilacuna taoyuanyu Ma & Tong…

A new genus and species of the family Pseudocyclopidae, Sipadantonius roihani gen. et sp. nov., was described based on specimens collected using a light trap in the marine cave of…

A new species Allopachria nigrocatta sp. nov. from Guangxi, China is described. New records are provided for the following Allopachria species: A. dudgeoni Wewalka, 2000 and A. we…

Although the status of Parascorpaena moultoni (Whitley, 1961) is now well established, the morphology of the species has been re-examined, with new diagnostic features identified.…

Two new janiroid isopod species, Heterosignum behbehanii sp. nov. and Uromunna alyamanii sp. nov., are described from the Kuwaiti waters, representing the first record of the gene…

A new species of Osedax is described here using molecular and morphological data. It was found at the depth of 550 m off the Brazilian coast through experimental deployment of cow…

Four new species of the genus Tapinocyba Simon, 1884 are described from Jiangjin, Chongqing: T. centralis sp. nov. (♂), T. denticulata sp. nov. (♂♀), T. triangularis sp. nov. (♂♀)…

A new species of Chromis (Teleostei, Pomacentridae) is described from four specimens collected between 95 and 110 m depth in mesophotic coral ecosystems in the Maldives, Indian Oc…

Herpetological inventories conducted in the Pui Pui Protected Forest in the central Peruvian Andes between 2012 and 2014 revealed unusually high local anuran richness and endemism…

Smilidarnis is fixed as the correct original spelling. Smilidarnis similifasciatus, sp. nov., from Bolivia and French Guiana, closely resembles S. fasciatus Andrade in being brigh…

A new species of the Asian leaf litter toad genus Leptobrachella, L. dayaoshanensis sp. nov., is described based on phylogenetic analysis, morphological characters, and bioacousti…

The genus Grouvellinus Champion, 1923 comprises 60 described species distributed across the Oriental and Palearctic regions. Species diversity is very high in mainland China, with…

Three new species of the genus Cicurina Menge, 1871 are described from Daba Mountain National Nature Reserve, Chongqing, China: C. chengkou sp. nov. (♂♀), C. dabashan sp. nov. (♂♀…

The genus Thibetana Efetov & Tarmann, 1995 includes six species occurring in southwest China and Indian Sikkim. In the present paper, Thibetana weii Li & He, sp. nov., the seventh…

The micromoth Cremastobombycia socoromaensis sp. nov. (Lepidoptera, Gracillariidae, Lithocolletinae) from the arid highlands of the western slope of the Andes of northern Chile is…

We describe a new species in the Rhyacophila tristis group, Rhyacophila lignumvallis Graf & Rázuri-Gonzales, sp. nov., from the island of Corsica (France) based on a single male s…

Two new species of the genus Torodora Meyrick, 1894 are described from China: T. lichi sp. nov. and T. mici sp. nov. Additionally, T. silvatica Park, 2007 is newly recorded for Ch…

New taxonomic and faunistic data on the agelenid spiders of Turkiye and the Caucasus are provided. Five species are described as new to science: Maimuna antalyensis sp. nov. (♂♀; …

In this study, a morphological revision was conducted of Agroecotettix Bruner, a group of grasshoppers inhabiting open xeric desert scrub, shrublands, and plains, spanning central…

The genus Dichodontocis Kawanabe, 1994 is newly recorded from China, and a new species, Dichodontocis guangzhouensis sp. nov. and its larva, is described and illustrated from Guan…

The genus Isonychia Eaton, 1871 is widely distributed across the Holarctic and Oriental regions. However, no representatives of this genus have been reported from southwestern Chi…

The wolf spider genus Halocosa Azarkina & Trilikauskas, 2019 from China is reviewed, including two species: H. cereipes (L. Koch, 1878) (♂♀) and H. hatanensis (Urita, Tang & Song,…

Four new species of leptonetid spiders from Anhui Province, China are recognized: Jingneta qishan Tong, sp. nov. (♂♀), Jingneta wukuishan Tong, sp. nov. (♂), Leptonetela jingde To…

Four, presumably microendemic new Leuctra species are described on the basis of morphology of the adult males and females. Each species was collected only in a single mountain ran…