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This paper presents a review of the genus Brachytrycherus Arrow from mainland China. Three new species are described and illustrated: B. bipunctatus Chang & Bi, sp. nov., B. denti…

The sperm ultrastructure of two ricaniid species, Pochazia shantungensis (Chou & Lu) and Ricania speculum (Walker), was investigated using light and transmission electron microsco…

A new species of the sabellid polychaete genus Claviramus Fitzhugh, 2002, is described from Ariake Inland Sea, Kyushu, Japan. Claviramus is a small genus, composed of three specie…

The Brachionus plicatilis complex represents the most studied group of rotifers, although the systematics of the species complex has not been completely clarified. Many studies ha…

One new species of the sap beetle genus Neopallodes, N. nigrescens sp. nov., is described and illustrated. New information on the distribution and illustrations of three species, …

A new genus, Retaldar gen. nov. of the family Issidae (Hemisphaeriinae, Hemisphaeriini) is described from Guangxi Province of China. A revised molecular analysis for the Hemisphae…

The genera Doddiella Kieffer, 1913 and Aratala Dodd, 1927 are treated as junior synonyms of of Aneuroscelio Kieffer, 1913 following study of the rediscovered holotype of the type …

The huntsman spider genus Pseudopoda Jäger, 2000 contains 140 species worldwide, of which 61 have been described from China. In this paper, this knowledge is increased by the desc…

Two new species of the southern African genus Xiphoscelis Burmeister, 1842 are recognised and described, X. braunsi sp. nov. from the Eastern and Western Cape Karoo (South Africa)…

More than 1500 proturan specimens from Hainan Island are systematically studied. An annotated list of all species of Protura from Hainan Island is provided and their geographical …

Nine new species groups of Exocelina Broun, 1886 from New Guinea are introduced with keys to their representatives. Four groups are monotypic and include three new species: the E.…

Tropical forest invertebrates, such as the parasitoid wasp family Ichneumonidae, are poorly known. This work reports some of the first results of an extensive survey implemented i…

The division of Greek members of the genus Temnothorax into 17 morphological groups is proposed. Temnothorax aveli species group is reviewed with three species: T. turcicus (Sants…

The genus Monstrilla Dana, 1849 is the most diverse of the copepod order Monstrilloida. Monstrilloid copepods are endoparasites of benthic polychaetes and molluscs; adult individu…

A new species of the rare ant genus Metapone, Metapone murphyi sp. nov., is described based on museum material consisting of a single nest series (workers, queens, and males) coll…

We engaged in six years of snap-shot surveys for fruit flies in rural environments and ten protected forest areas of Bangladesh, using traps baited with male lures (cue-lure, meth…

A new ascothoracidan species has been discovered off Taiwan in the north part of the west Pacific at SCUBA depths. Twelve specimens including both sexes of the new species, descri…

The generic allocation of Helix subaperta is clarified by using genetic data and morphological traits of the genital organs; its position within the hitherto monotypic genus Canta…

A new species, Acerentulus bulgaricus sp. nov., belonging to the confinis group, is described from Bulgaria. This species is characterized by long foretarsal sensilla a and b, the…

Keys to adults and larvae of the genera of West Palaearctic nematine sawflies are presented. Species of some of the smaller genera are keyed, and their taxonomy, distribution, and…

The Uberaba River is an important right-bank tributary to the Grande River, in the Upper Paraná River system, Brazil, and the main water source for the public supply of the Uberab…

The present study presents a revision of the genus Ceriantheomorphe Carlgren, 1931, including redescriptions of the two presently recognized species, Ceriantheomorphe ambonensis (…

The genus Tsitsikamma Samaai & Kelly, 2002 is to date exclusively reported from South Africa. Three species are known from the southern coast: Tsitsikamma favus Samaai & Kelly, 20…

Panorpa Linnaeus, 1758 is the largest genus in the scorpionfly family Panorpidae. Herein we describe two new species from eastern China, Panorpa jinhuaensis sp. nov. from Jinhua, …

This research provides the first systematic contribution to the mayfly (Ephemeroptera) Fauna of Kosovo. This investigation was conducted from March to November in 2017 and 2018; 3…

A checklist of 20 extant species of Dryininae (Hymenoptera, Dryinidae) from the Western Palaearctic subregion is presented.

The genus Oodera Westwood, 1874 (Hymenoptera, Pteromalidae, Cleonyminae) is recorded for the first time for the Arabian Peninsula, from the Kingdom of Saudi Arabia and the Sultana…

The genus Cyanopenthe Nikitsky, 1998 is first recorded from mainland China. Two new species, C. granulata sp. nov. and C. hirtiscutellara sp. nov., are described and illustrated. …

We report the discovery of two wasp species emerging from egg sacs of the spider Cyrtophora citricola (Forskål 1775) collected from mainland Spain and the Canary Islands. We ident…

As part of an ongoing effort to revise the taxonomy of air-breathing, marine, onchidiid slugs, a new genus, Laspionchis Dayrat & Goulding, gen. nov., is described from the mangrov…

Saissetia kunmingensis Cao & Feng, sp. nov., a member of the genus Saissetia Kanda, 1960, is a new species in China that is described and illustrated in this study, based on adult…

A new species of Mediapotamon Türkay & Dai, 1997 from a karst system in southwest China is described. The new species can be separated from congeners by the combination of a sharp…

The first record of the amphioxus Branchiostoma californiense on seagrass patches of Halodule wrightii in the Gulf of California is reported. Sixty individuals (19 males, 18 femal…

A new species of sponge-inhabiting barnacle, Membranobalanus porphyrophilus sp. nov., is described herein. This species can be distinguished from all other congeners by a combinat…

The monospecific genus Leptotachidia Becker, 1974 (Pseudotachidiidae Lang, 1936) was previously known only from the deep Atlantic. Female specimens of two unknown species of this …

The Middle East species of Claraeola Aczél (Diptera, Pipunculidae) are revised based on morphological characteristics and sequence data from the mitochondrial COI barcoding gene, …

Two new species of the mayfly family Oligoneuriidae are described based on larval specimens recently collected in Iran. The first new species, Oligoneuriella tuberculata Godunko &…

Aphyocypris normalis (Teleostei: Cyprinidae) is an endemic species in South China, but little is known about its genetic structure. This study examined the population structure of…

Sabah, Malaysia, is well known for its extensive and diverse coral reefs. It is located on the northwestern edge of the Coral Triangle, the region with the highest marine biodiver…

The Chyromyidae of Turkey are reviewed and all 15 species known from the country are listed. The following are new records: Chyromya miladae Andersson, 1976, Gymnochiromyia inermi…

This study summarises all available information on the bees of the genus Sphecodes in the Arabian Peninsula and surrounding countries (Israel, Jordan, and Syria). Twenty-six speci…

The larval stages of the central European sibling caddisfly species Sericostoma personatum (Spence in Kirby and Spence, 1826) and S. flavicorne Schneider, 1845 are morphologically…

A third species of the genus Sinhomidia is described from South China: S. uniseta sp. nov. This new species can be distinguished from the two other species of the genus by the fol…

Three new species of the genus Falcileptoneta Komatsu, 1970 belonging to the spider family Leptonetidae Simon 1890 are described from Korea. All species were collected from wet le…

Diving beetles are generally aquatic and live submerged in water during larval and adult stages. A few groups have colonised hygropetric habitats and fewer species still can possi…

A new species, Takydromus yunkaiensis J. Wang, Lyu, & Y.Y. Wang, sp. nov. is described based on a series of specimens collected from the Yunkaishan Nature Reserve located in the s…

Two new species of the genus Molophilus Curtis, 1833 are described, Molophilus (Molophilus) rohaceki sp. nov. (Italy: Calabria) and M. (M.) soldani sp. nov. (Azerbaijan), and thei…

The diagnostic characters of the Chinese planthopper genus Sinonissus Wang, Shi & Bourgoin, 2018 are redefined. Three new species of this genus, S. daozhenensis Chang & Chen, sp. …

The first voucher-confirmed record of Alburnus scoranza and the first morphological description of Alburnoides for the Vjosa River system in Albania are reported with a brief disc…

The male of Borboropactus jiangyong Yin, Peng, Yan & Kim, 2004 is described for the first time from Jinggang Mountain, Ji’an City, Jiangxi Province, China. Based on male and femal…