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The nature conservation depends on the completeness of the knowledge about the biodiversity in the study area. Today, data on distribution and diversity of Diptera taxa remain fragmentary. This paper supplements data on the diversity of Diptera species in Europe, Russia, and the Republic of Mordovia. We have studied 1321 specimens of 241 species collected in 2013–2022. Among them, there are species, which are new for Russia (Neoempheria brevilineata, Desmometopa discipalpis) and for both Russia and Europe (Neophyllomyza flavescensis, Phyllomyza auriculatusa, P. luteipalpis, P. orbita, P. piceus, P. striolatum). We have found for the first time 231 Diptera species for the fauna of the Republic of Mordovia; the families of Bolitophilidae, Keroplatidae, Scatopsidae, Platypezidae, Micropezidae, Opomyzidae, Asteiidae, and Milichiidae have been found for the first time in this region. Anthrax incomptus (Bombyliidae), being previously reported for the Republic of Mordovia, has been excluded now from the fauna of this region. Nine Diptera species have been previously indicated for the Republic of Mordovia without reliable confirmation by collected specimens. In this study, we have confirmed their presence in the Republic of Mordovia. Taking into account the results of the present paper, the Diptera fauna of the Republic of Mordovia includes currently 1187 species belonging to 71 families. Data on collecting methods have been presented for the found species. We provide a comparison of collecting methods and suggestions for an effective inventory of the regional Diptera fauna. We are of the view that the number of the used collecting methods affects positively the results of the fauna inventory.

We have studied the material of some Diptera families collected with beer traps from middle part of the Volga River region (central part of European Russia: Nizhny Novgorod and Ulyanovsk regions, and southeastern part of European Russia: Saratov Region). Thirty species from 10 Diptera families are reported: Culicidae (2 spp.), Dryomyzidae (2 spp.), Lauxaniidae (7 spp.), Limoniidae (3 spp.), Pallopteridae (4 spp.), Periscelididae (1 sp.), Platystomatidae (2 spp.), Sciomyzidae (2 spp.), Tabanidae (1 sp.), Ulidiidae (6 spp.). Two species, Peplomyza intermedia Remm, 1979 (Lauxaniidae) and Periscelis annulipes Loew, 1858 (Periscelididae) are recorded from Russia for the first time

The present study is based on examination of the collection funds of the Zoological Institute of RAS and the Department of Ecology and Systematics of Invertebrates of Voronezh State University. New data on the fauna of 29 Rhaphium species of Russia are provided. Rhaphium tuberculatum is recorded for the first time for the Russian fauna. Rhaphium patulum is recorded for the first time for Asia. The previously known data of distribution of Rhaphium species were supplemented and updated. In this paper, new records of faunal data were provided for 29 species of Rhaphium including the following species: Rhaphium albifrons, Rh. appendiculatum, Rh. brevicorne, Rh. commune, Rh. confine, Rh. crassipes, Rh. dichromum, Rh. discolor, Rh. elegantulum, Rh. fissum, Rh. johnrichardi, Rh. laticorne, Rh. latimanum, Rh. lehri, Rh. micans, Rh. monotrichum, Rh. nasutum, Rh. nigribarbatum, Rh. obscuripes, Rh. patellitarse, Rh. patulum, Rh. penicillatum, Rh. rivale, Rh. tibiale, Rh. tridactylum, Rh. tuberculatum. Rhaphium. johnrichardi, and Rh. tuberculatum are recorded for the first time after the descriptions. The previously known range of many species has been significantly expanded. New data for rare species, known from one or two regions of Russia, were obtained: Rhaphium boreale, Rh. confine, Rh. fissum, Rh. obscuripes, Rh. patulum, and Rh. tibiale. As a result, currently 71 species of the genus Rhaphium are known from Russia.

The purpose of the research is to analyze situation with control measures against animals with ectoparasitoses by the means of bringing environmentally safe and easy to use medicinal products to animal industry. Materials and methods. Literature has been studied and situation on extension of the major parasitic arthopods in animals have been analyzed in the Republic of Belarus. Evaluation of results of administration of Stomozan, Ektocin-5, Ratoks, Pharmacidol-600 as well as Rivertin, Univerm, aversectin paste and Pharmacine. Results and discussion. It is necessary to carry out disinfestation of outer walls, summer sheds, fences by the means of Stomozan, Ektocin-5, Ratoks, Pharmacidol-600 in order to eliminate parasitic insects and mites. Animals might be treated by these drugs. During the winter animals are treated by insect-powder, unctures, liniments. At the onset of warm weather animals are treated by liquid acaricides at all times. Drugs from the pyrethroids, macrocyclic lactone, organic sulphur-containing compound groups are administered more frequent. But summer spraying do not guarantee 100 % impact against gadfly diseases. For horse treatment Rivertin can be used in the dose of 0.1 mg per kg of animal body weight per os with food dualfold in 24 hours; Univerm can be used in the dose of 0.1 mg per kg per os with food dualfold in 24 hours; 2% Aversectin paste can be used in the dose of 1 g per 100 kg of body weight per os dualfold every other day. Pharmacine in the single dose of 0.4 ml (2 injections of 0.2 ml) intradermally in the neck is recommended to use for treatment of hypodermatosis. Intradermal administration of Pharmacine is effective during the period from September, 15 to March (as far as swellings are appeared under the skin). If larvae formed velum under the skin, the dose should be increased.