The new genus and species Vostonica tenax was discovered in copepods collected in washings of the shoreline sand in Vostok biological station, near Nakhodka on the coast of the Sea of Japan. Vostonica is distinct genus of lower (rhabdophryid) vermigemmines with a unique disposition of tentacles on the widely expanded antesoma. Known genera of lower vermigemmines, without shell and retractile actinophore, are listed for comparison, with indication of type species and hosts.

The family Ironidae comprising 8 marine and 1 freshwater genera is revised and keys to genera and species are presented. Diagnoses of all genera are specified and new combinations established in the most poorly defined genera – Dolicholaimus, Syringolaimus, Thalassironus and Trissonchulus. Short descriptions for most of the valid species are provided based on literature and original data. Five new (Dolicholaimus filipjevi, D. minor, Syringolaimus marisalbae and Ironella riemanni) or poorly known (D. major) species are described. A new diagnosis of Ironidae is presented instead of the one suggested by Andrassy.

The species of Perkinsiella introduced into Florida has been examined. It proves to be the genuine P. saccharicida Kirkaldy.

Three new species are described from springs with temperature of water 33-52 °C. Achromadora thermophila sp. n. differs from A. ruricola in having supplements, Diploscapter tokobaevi sp. n. may be distinguished from all species of Diploscapter by nonreflexed ovaries, Cephalobus maximus sp. n. differs from C. quadrilineatus in the longer body.

All records of Rh. phoeniceus from Moldavia, Ukraina, southern part of European Russia, Transcaucasia and Turkmenistan refer to Rh. sanguineus. In the former USSR, Rh. phoeniceus is found only in the south of the Leningrad Province.

Cryobdella ljadovi sp. n., parasitic on gills of Muraenolepis marmoratus and M. microps from coastal waters of the Kerguelen and South Orkney Islands, is described. Individuals reach a maximum length of 17.5 mm and have no eyes, ocelli, papillae, posterior crop caeca. The anterior sucker is small, indistinctly separated from the trachelosome. The posterior sucker is of an unusual form and adapted to the gill raker attachment.

The following new synonymies are established: MIRIDAE: Trigonotylus caelestialium (Kirk.) = T. procerus Jorigtoo & Nonnaizab; TINGIDAE: Sphaerista paradoxa (Jak.) = S. xinganicus Qi & Nonnaizab; Tingis capillata Kir. = T. pallida Štusák & Stehlík; T. helvina (Jak.) = T. similicrispata Qi & Nonnaizab; Catoplatus fulvicornis (Jak.) = Tingis bucharica Baehr.

Caecijaera kussakini sp. n. from the intertidal zone of several islands in the South China Sea is described. It is the first record of a species of this genus in South-East Asia.

A new species of the genus Anepitacta (Meconematini) is described from Cameroon.

The phylogeny of the Leptophlebiidae is discussed. The paraphyletic subfamily Leptophlebiinae is divided into Leptophlebiinae s. str. (which is also probably paraphyletic) and the holophyletic subfamily Habrophlebiinae subfam. n. Nymphs and imagos of the Caucasian species Habroleptoides pontica sp. n. and H. caucasica Tshernova are described.

1 new species is described. 2 species are recorded from Vietnam for the first time.

The taxonomic position of Perlodes (Skobeleva) cachemirica Aubert is discussed; on the basis of clear differences between this species and those of the genus Filchneria a new genus Aubertiana is established.

The following new synonymy is established: Stenonabis bussyi (Poppius, 1914) = S. imitator Kerzhner, 1970; S. orientalis (Reuter, 1910) = S. philippinensis Kerzhner, 1970.

New Permian taxa of the order Grylloblattida from North-East Europe are described: Atactophlebia sharovi sp. n. (Atactophlebiidae), Pinidelia sukatshevae gen. et sp. n. (Ideliidae) and Parakhosara magna sp. n. (Megakhosaridae). Genera Liomopterina Riek, 1973 and Miolopterina Riek, 1976 are transferred from Liomopteridae to Megakhosaridae. The position of the family Atactophlebiidae within Grylloblatiida is discussed.

Dzhajloutshellidae fam. n. of the suborder Caelifera is established, and two new genera and two new species of this family are described. A new genus of the family Bintoniellidae of the suborder Ensifera is described.

A list of type specimens is given (except most species of Miridae described in the last 50 years and species of Nabidae for which data on types in Paris have been recently published). Lectotypes for 155 nominal species-group taxa (151 in Miridae and 4 in Nabidae) are designated. New synonymies in Miridae: Atractotomus mali (Meyer-Dür, 1843) = A. vireti Wagner, 1955; Macrotylus nigricornis Fieber, 1864 = Miris fuscicornis Brullé, 1839 (nomen oblitum); Macrotylus nigripes (Puton, 1874), stat. n. = M. paykullii var. nigripes = M. interpositus Wagner, 1951; Orthotylus salsolae Reuter, 1875 = O. rubidus f. fuscescens Stichel, 1933. Cyphodemidea Reuter, 1903 is transferred from Deraeocorini to Mirini. Some characters to recognize Fieber’s and Reuter’s types in the collection are indicated.

L. elegans sp. n. (Kazakhstan and Mongolia), L. izyaslavi sp. n. (Kazakhstan, Tajikistan, Mongolia), L. monticola sp. n. (Georgia, Kazakhstan, Uzbekistan, Tajikistan, Mongolia) and L. orientis sp. n. (Kazakhstan and Mongolia) are described. Distribution of L. dracunculi Josifov is precised. A key to species occuring in Mongolia and the former USSR is given.

Five new species of Deltomerus are described: D. lailensis sp. n. (Georgia: Svanetia), D. chachalgensis sp. n. (Chechnia), D. dariae sp. n. (Chechnia), D. abdurakhmanovi sp. n. (Ingushetia), and D. miroshnikovi sp. n. (Balkaria). Descriptions of third-instar larvae of D. elongatus (Dejean, 1831) (N Ossetia), D. tibialis Reitter, 1887 (Abkhazia), and D. pseudoplatynus Reitter, 1887 (Krasnodar Terr.) and notes on some other Deltomerus larvae are given.

Saprinus lopatini sp. n. closely related to S. lautus Er. is described from the lowlands of Middle Asia. New data on distribution of 8 poorly known species are given.

Twelve species are added to the list of Spanish fauna.

Data on 8 species of Aphanisticus from Vietnam are given. A. volkovitshi sp. n. is described.

Sphenoptera (Sphenopterella) margaritae subgen. et sp. n. is described from the Nuratau Mts., Uzbekistan. Type species are designated for genus Sphenoptera and its subgenera Deudora Jakovlev, 1898; Chilostetha Jakovlev, 1889; Cyphostetha Jakovlev, 1893 (= Rhaphidochila Jakovlev, 1900, syn. n.); Hoplistura Jakovlev, 1889; Tropeopeltis Jakovlev, 1901; and Chrysoblemma Jakovlev, 1889. Suggestions to conserve some commonly accepted names are put forward.

Phytoecia natali sp. n., related to Ph. iranica Villiers, 1960, is described from a male found in Azerbaijan.

Rhamphus medvedevi sp. n., with single tarsal claws, from Sri Lanka is the first record of the genus Rhamphus Clairv. from the Oriental Region. Two new species are described from Ethiopia: Rhamphus amplipennis sp. n. and Rh. kazabi sp. n., and Rh. namibicus sp. n. – from Namibia. Rh. kiesenwetteri Tourn. is recorded from Ethiopia.

Mecysmoderes kerzhneri sp. n. from Kunashir I. and Japan, Ceutorhynchus murzini sp. n. and Mogulones koreanus sp. n. from N Korea are described.

Ten species of Aglaostigma from Eastern Asia are segregated into a separate subgenus Neurosiobla Conde, 1935, stat. n. (Laurentina Malaise, 1937, syn. n.). Aglaostigma (Neurosiobla) tertium sp. n. from the Russian Far East and North Korea, A. (N.) potanini sp. n. from China (Sichuan), the females of A. (N.) malaisei Conde, 1935 and A. (N.) sachalinense Conde, 1935 (A. togashii Zombori, 1973, syn. n.) are described. A key to the species of the subgenus is given.

Catopria tristis sp. n. from Northeastern Russia is described.

The taxonomy and composition of the genus Ipodoryctes Granger are discussed. Five new Oriental species of Ipodoryctes are described and figured: I. peregrinus sp. n. (Vietnam, Taiwan), I. tamdaoensis sp. n. (Vietnam), I. longi sp. n. (Vietnam), I. rugosiscutum sp. n. (Vietnam), I. annulicornis sp .n. (Vietnam). New combinations are established: I. ashmeadii (Baker), comb. n. and I. roslinensis (Lal), comb. n. (both from Rhaconotus). A key to the Oriental species of Ipodoryctes is given.

Siragra nitida Cameron from New Guinea is redescribed and figured. This genus has such important morphological characters as loss of the prepectal and occipital carinae, presence of propodeal bridge (“pseudosternite”) and special apical process of scapus margined by strong lateral carinae. The new tribe Siragrini trib. n. is established for this genus.

Goniophthalmus Vill. is for the first time found in Middle Asia (Southern Uzbekiistan). G. halli Mesn. is reared from a new host, noctuid Heliothis viriplaca Hfn.

Teleterebratus bytinskii sp. n. is described from Israel and key to world species of the genus Teleterebratus is given.

There is no general agreement among authors on whether to rank Pleciidae (Diptera) as a subfamily or a family. The description of the muscles of the male genitalia in Penthetria sp. (Pleciidae, Bibionoidae) and comparison with Bibionidae (Bibionoidae) and Trichoceridae (Trichoceridae) are reported in this paper. Comparative studies confirm Pleciidae to be a separate family (Rohdendorf, 1964, 1977: Krivosheina, Mamaev, 1967; Krivosheina, 1969, 1972, 1986; Nartshuk, 1990).

The Chloropidae from von Roser’s collection deposited in the Staatliches Museum für Naturkunde in Stuttgart are revised. New synonymies are established: Lasiambia coxalis v.Roser, 1840 (Chlorops) = oophila Henning, 1943 (Goniopsita); Siphunculina aenea Macquart, 1835 (Siphonella) = albinervis v.Roser, 1840 (Diastata); Meromyza virescens v.Rosre, 1840, sp. dist. (not synonym of M. nigriventris Mcq., 1835) = M. hercyniae Duda, 1933 = M. lucida Péterfi, 1962. Lectotypes of the following von Roser species are designated: Camarota rufimana, Diastata albinervis, Chlorops quadrimaculata, Ch. distincta, Ch. basalis, Ch. cingulata, Ch. nigrimana, Ch. aenea, Crassiseta flaviventris. The type specimens of Ch. nigricornis, Ch. fulviceps, Crassiseta annulipes, C. fuscipes have not been found.

Cerodontha (Poemyza) nowakowskii Zlobin, 1985 is a valid name and its synonymy to C. (P.) calamagrostidis Nowakowski, 1972 is incorrect.

A new classification of Astrorhizata Saidova, 1981 is proposed. It is based mainly on the plan of the structure of the organism reflected in its test building, with consideration of the wall structure as of essential but secondary importance in classification. The class includes 5 orders (Astrorhizata, Dendrofryida, Saccamminida, Parathuramminida, and Hippocrepinida), 2 suborders, 7 superfamilies, 35 families, 38 subfamilies and 192 genera, among them families Normaninidae and Lacustrinellidae, subfamilies Amphifenestrellinae, Causiinae, Tholosininae, Daitroninae, Saccamminidinae, Amphicervicinae, Eoammosphaeroidinae, Hemithurammininae, Jaculellinae, and Saccorhininae are new. The subfamilies Vanhoeffenellinae, Astrorhizinae, Rhabdammininae, Dendrophryinae, Psammosphaerinae, Saccammininae, Hemisphaerammininae, Crithioninae, Hyperammininae, and Hippocrepininae undergo considerable revision, taxonomic position of 1 order, 6 families, 6 subfamilies and 28 genera and rank of some taxa was changed. The diagnoses and composition of all suprageneric taxa are given.

Freeliving marine nematodes from the East Siberian Sea are described for the first time. The material was collected in the Chaunskaya Bay. Six species of the order Enoplida (families Leptosomatidae, Enoplidae, Rhabdodemaniidae, Oncholaimidae) are found, three of them (Pseudocella septentrionalis, Rhabdodemania koltchaki and Oncholaimium tchesunovi) described as new.

The phylum Cephalorhyncha is a taxon including headproboscis worms: Priapulida, Loricifera, Kinorhyncha, Nematomorpha. The body of all Cephalorchyncha is divided into proboscis (= introvert) and trunk. The introvert is capable of invaginating into the trunk and is subdivided into the mouth cone, central part with sensory-locomotory scalids, and neck region. The central nervous system consists of nerve ring located in the introvert at the base of mouth cone, and ventral cord. The cephalorhynch worms of Middle Cambrian Burdgess Shale fauna are reviewed. Ancalagon and Fieldia are the most primitive cephalorhynchs. Their proboscis is not able to invaginate completely. Ancalagon and Fieldia could be included into a separate subphylum Protocephalorhyncha. Another subphylum, Eucephalorhyncha, is characterized by the introvert being able to invaginate into the trunk. Subphylum Eucephalorhyncha includes the classes Louisellida (MiddleCambrian only), Priapulida (with Middle Cambrian Ottoia and Selkirkia, Carboniferous Priapulites and several recent genera), Loricifera (considered to be neotenic group), Kinorhyncha, and Nematomorpha, the most advanced group, where only larvae retain the structure of headproboscis worm. Diagnoses of the phylum Cephalorhyncha, new subphyla Protocephalorhyncha and Eucephalorhyncha, and all classes and orders of extinct and extant cephalorhynchs are presented.

The genera Arachnoscelis Karny, Poecilomerus Bol. are transferred to the tribe Phlugidini of the subfamily Meconematinae.

Following a taxonomic evaluation of its diagnostic characters, the genus Dastaricrinus is revised and its systematic position clarified. Morphogenetic changes of the decilobate ligamentary field of the articular facets of the stem columnals make dastaricrinuses sharply distinct among known pentamerate Silurian crinoids and allow them to be separated in a new family. The paper presents a description of the family Dastericrinidae fam. n. and four species: Dastaricrinus digitatus Stukalina, 1986 (type species of the genus), D. primitivus (Milicina, 1973), D. barbarus sp. n. and D. petaloideus sp. n.

Six species of the family Acturidae are recorded from the western Antarctic, at depths more than 6000 m. All the six are new species belonging to six different genera, two of them new. Globarcturus angelikae was described by the authors earlier. Five new species (Rectarcturus tatianae, Neoarcturus caecus, Abyssarcturus averincevi, Cylindracturus leucophthalmus, and Antarcturus andriashevi) and the new genus Abysarcturus are described in this paper. All hadal arcturid species are probably blind; but two of them bear rudementary colourless eyes, and the others are without indication of eyes.

Paracomantenna wishnerae sp. n. from the eastern tropical Pacific is described. The new species is clearly distinguished from other species of the genus by the longer points of Th5 posterior corners, serrated margin of Re3 P2 between first and second and second and third external spines, and setation of oral parts.

Records of Sigara albiventris (Horváth) from Daghestan refer to S. striata (Linnaeus) and those from Azerbaijan to populations intermediate between S. striata and S. albiventris.

Population analysis of Forcellinia wasmanni (Moniez) and F. diamesa A.Z. from the Caucasus revealed their additional differentiating characters and geographical variability in some indices.

The following seven new species are described: Pseudicius chinensis sp. n. and P. szechuanensis sp. n. from China, Sichuan; Pellenes dilutus sp. n. from South Kazakhstan; P. pulcher sp. n. from North Kazakhstan and Tuva; P. tesin sp. n. from Turkmenistan; Ptocasius songi sp. n. from China, Sichuan; and P. variegatus sp. n. from Sourth Kazakhzstan. The female of Sitticus pulchellus Logunov, 1992 is described for the first time. Pseudicius braunsi (Peckham & Peckham, 1903), originally described from Sourth Africa, is recorded from Palaearctic (Turkmenistan) and redescribed. New faunistic records for Salticus dzhungaricus Logunov, 1992 are given.

Three species originally described as Tetrix brachyptera, Mesotettix (Uvarovitettix) transsylvanicus and Tetrix depressa are considered as representatives of three monotypic genera: Mishtshenkotetrix, Uvarovitettix and Depressotetrix respectively.

Pseudomogoplistes byzantius sp. n. from Crimea and Greece and P. turcicus sp. n. from Turkey are described.

Loricula issykatensis sp. n. is described from the Kyrghyz Range.

Dicyphus parkheoni and Cyrtopeltis rufobrunnea are described from Sourth Korea.

16 species are recorded for the first time from various countries Asia.

A list of type specimens of 75 nominal species-group taxa is given. Lectotypes are designated for 48 of them. Characters for recognition of these lectotypes and holotypes of certain taxa are indicated. Reduvius komarowii (Jakovlev, 1885) is restored as a good species (not a synonym of R. tabidus Klug, 1830).

A new synonymy Stenolophus paulinoi Heyden, stat. n. (discophorus var. paulinoi) = S. lanzarotensis Klinstra, = S. portugalicus Matalin is established.

M. divaricatus (Jakovlev) and M. deserticola (Jakovlev) are restored as good species. M. transparens (Jakovlev) is placed in synonymy with M. deserticola. M. ovalis (Puton) is a synonym of M. dohrnianus (Mulsant & Rey) which does not occur in the studied area.

Several new taxa are described: Notiophilus hyperboreus sp. n. from NW Siberia, N. ghilarovi sp. n. and N. stackelbergi sp. n. from Tien Shan Mts. (new data on some poorly known species of this genus are also given), Broscus kozlovi sp. n. (China: Inner Mongolia), and Andrewesius amicus sp. n. (China: Sichuan). Anchagonum gen. n. (tribe Platynini) is established for Anchomenus turkestanicus Ballion, 1870 from Middle Asia. New data on some Palaearctic Brachinus are given.

Examination of a male of Nesarpax labiatus (Erichs.), endemic to the Cabo Verde Islands, and comparison with specimens of various Palaearctic and African genera have shown that this species should be included in the Palaearctic genus Acinopus Dej. and that Nesarpax All. may be treated as one of its subgenera closest to Acinopus s. str. At the same time, Nesarpax may be considered a link between more plesiomorphic genera Nesarpalus Bed. and Nesacinopus Tschit. from Canaries and Madeira, on the one hand, and more apomorphic subgenera of Acinopus from Mediterranean Region, on the other hand. The distinguishing features of Dregus Motsch., Cratognathus Dej., and Pangus Dej., also probably related to Acinopus, are given.

Epuraea (E.) dolosa sp. n. from Northern Europe (Perm’ Province of Russia and Norway) is described with comments on the systematic position and taxonomy of some European species of the subgenus Epuraea similar to the new one. The new species is compared with E. (E.) angustula Sturm, 1844; E. (E.) boreella (Zetterstedt, 1828); E. (E.) drapeta Reitter, 1909; E. (E.) excisicollis Reitter, 1872; E. (E.) fussi Reitter, 1885; E. (E.) longula Erichson, 1845; E. (E.) marseuli Reitter, 1872; E. (E.) oblonga (Herbst, 1793); E. (E.) opalizans J. Sahlberg, 1889; E. (E.) rubronotata Reitter, 1873 and others.

The following new species are described: Clavicornaltica australis (Australia), Orthaltica pahangi (Malaya), O. orientalis (Malaya), O. borneoensis (Borneo), O. australis (Australia), O. kirejtshuki (Australia), O. rangoonensis (Burma), O. mindanaoensis (Philippines), O. bakeri (Philippines), O. visayanensis (Philippines).

Microchelonus subagathis sp. n. belonging to the M. agathis group is described and figured. This group includes 5 species characterized by strongly developed cheeks. They are distributed in arid regions of the east Palaearctic. A key to species of the group is given.

Aphodius quadratus Reiche and A. hammondi Dell. are reported from Russia for the first time. Data on distribution of A. notabilipennis Petr., A. rugosostriatus Waterh. (= raddei Berlov, syn. n.) and A. costatellus A. Schmidt are given.

A new genus Asiacentistes gen. n. [type species Centistes (Centistes) alekseevi Belokobylskij, 1992] and ten new species [Centistes (Centistes) tsherskii sp. n., C. (Ancylocentrus) kaplanovi sp. n., Meteorus kunashiricus sp. n., M. rossicus sp. n., Perilitus coxator sp. n., P. chabarovi sp. n., Leiophron (Peristenus) pacificus sp. n., L. (P.) golovnini sp. n., L. (P.) gamayun sp. n., L. (P.) posjeti sp. n.] of the subfamily Euphorinae from the Russian Far East are described and illustrated.

Zagrammosoma velerii sp. n. is described from Cuba.

Pseudaphycus coccurae sp. n. is described. It is a common parasite of the Ussuri Plum Mealybug Coccura suwakoensis (Kuwayama & Toyoda) (Homoptera: Pseudococcidae) in the Far East of Russia (Amur Province and Primorsk Territory). Previously this species has been erroneously identified as P. malinus Gahan, a well known parasite of Comstock Mealybug Pseudococcus comstocki Kuwana.

Vietmachus bambusicola gen. et sp. n. is described. The new genus belongs to the tribe Astymachini. It differs from the genus Astymachus in dentation of mandibles and hidden long ovipositor covered by strongly attenuated IX syntergite.