Two new Ptychoptera Meigen, 1803 (Diptera, Ptychopteridae) from the Western Palaearctic.

Ptychopteraxanthopleura Dvorák, Obona & Manko, sp. nov. from Azerbaijan and Georgia, and Ptychopterastaryi Dvorák, Obona & Manko, sp. nov. from Bulgaria are described. P.xanthopleurasp. nov. differs from the other member of the lacustris group mainly by having almost completely yellow pleurae, and by the shape of the epandrium and gonocoxites. The diagnostics of P.staryisp. nov. and P.incognita Török, Kolcsár & Keresztes, 2015 based on male genitalia are provided.

Present knowledge on Mecoptera of Ukraine.

The first annotated checklist of Mecoptera of Ukraine is presented. Altogether, 11 species of scorpionflies are known with a confirmed or probable occurrence in Ukraine. This list is based on previously published data, as well as on recently collected materials and specimens housed in the collection of the State Museum of Natural History NAS Ukraine, Lviv. This collection belongs to the oldest one in Ukraine and comprises specimens collected by Jzef Dzidzielewicz, the founder of mecopteran investigations in Eastern Europe in the 19th and 20th centuries. For each listed species, its distribution in Ukraine is given together with notes on the history of investigations, and synonymies of the respective taxa. Detailed information on the distribution of selected species from the Red Book of Ukraine is presented.

Updated taxonomic keys for European Hippoboscidae (Diptera), and expansion in Central Europe of the bird louse fly Ornithomyacomosa (Austen, 1930) with the first record from Slovakia.

The available keys for European Hippoboscidae are outdated and do not cover all species currently known from Europe. Therefore, identification keys to the eleven genera and 31 species of the European hippoboscids are provided here. Ornithomyacomosa (Austen, 1930) (Diptera: Hippoboscidae) is recorded for the first time from the territory of Slovakia based on one female found on a sand martin, Ripariariparia (Linnaeus, 1758). The list of keds and louse flies recorded from the territory of Slovakia is increased to 20 species. New host records for Slovakia are presented.

A new species of Epeorus (Caucasiron) (Ephemeroptera, Heptageniidae) from Azerbaijan and Iran.

A new species, Epeorus (Caucasiron) hyrcanicussp. nov., is described based on larval morphology and molecular data (COI) containing sequences from all Caucasian Caucasiron species described to date. The species is distributed in the Hyrcanian forest of southeastern Azerbaijan and northwestern Iran. Based on our wide-range sampling, the new species is likely endemic to this area. The most pronounced larval morphological diagnostic characters are the coloration pattern of abdominal sterna (a pair of oblique stripes and stripe-like medio-lateral maculae) and terga (triangular medial maculae), poorly developed projection of the costal margin of gill plates III, presence of hair-like setae on the surface of abdominal terga, and relatively wide shape of gill plates VII (in natural position from ventral view). The diagnostic characters are compared to related species, and primary information to habitat is provided.

Psychodidae (Diptera) of Azerbaijan and Georgia - faunistics with biodiversity notes.

Records of 46 Psychodidae (Sycoracinae 1, Trichomyiinae 1, Psychodinae 44) species/subspecies are presented in this paper based on specimens collected by sweep-netting in Azerbaijan and Georgia in 2019. Nine species are recorded for the first time since their original description; 12 species are new for Transcaucasia; 22 species are new for Azerbaijan; and 17 species are new for Georgia. Saraiella ressli montana Jezek, 1990 is proposed as a synonym of S. ressli Wagner, 1983, syn. nov. Knowledge of some aspects of the ecology and biogeography of selected (especially rare) species has been expanded and a clear pattern was found in species richness, rare species, and new records in relation to land use, habitat diversity, and preservation of the environment surrounding the sampling site.

Review and contribution to the stonefly (Insecta: Plecoptera) fauna of Azerbaijan.

Known Plecoptera data published from Azerbaijan are critically reviewed. New records of 28 species are enumerated on the basis of specimens collected between 2017 and 2019, among them 16 are new for the fauna of Azerbaijan. Nemoura irani Aubert, 1964 is new for the whole Caucasian region, Leuctra sanainica Zhiltzova, 1960 and Plesioperla sakartvella (Zhiltzova, 1956) are new for the Greater Caucasus. The female and larva of an unknown Protonemura Kempny, 1898 species, collected in the Talysh Mts, are illustrated and described under temporary name Protonemura sp. AZE-1. A new species of Protonemura, collected both in the Azerbaijan and Georgian areas of the Greater Caucasus, will be formally described in a further paper. A male Protonemura specimen was found to be infected by mermithid worms, morphological lesions are illustrated and commented; this is the second documented case of mermithid infection in stoneflies. Subspecies level identity of Azerbaijani populations of Leuctra fusca (Linnaeus, 1758) proved to be problematic, morphological characters of the specimens are illustrated. Synonymy of Isoperla caucasica Balinsky, 1950 and I. pulchra Balinsky, 1950 under I. bithynica (Kempny, 1908) is disputed, the two names are combined under I. grammatica (Poda, 1761) sensu lato.

Two new Palaearctic species of moth flies (Diptera, Psychodidae, Psychodinae) from the Caucasus Mts.

Psychodid specimens were sorted from samples collected during fieldwork in areas in and around the Caucasus Mountains in 2019. Thornburghiella montana sp. nov. (from Georgia) and Pericoma inopinata sp. nov. (from Azerbaijan and Georgia) are described. Differential diagnoses are given and diagnostic characters illustrated.

Synopsis of the Psychodidae (Diptera) fauna of Bulgaria.

Records of 81 Psychodidae (Sycoracinae 4 spp., Psychodinae 76 spp.) species/subspecies are presented in this paper based on specimens collected in Bulgaria. 46 species are new records for Bulgaria (Sycoracinae 3 spp., Psychodinae 43 spp.). The Psychodidae fauna of Bulgaria now comprises 99 species (Phlebotominae 5 spp., Sycoracinae 5 spp., Trichomyiinae 1 sp., and Psychodinae 88 spp.).

A revised annotated checklist of louse flies (Diptera, Hippoboscidae) from Slovakia.

The list of all known locality and host records from the literature on louse flies from Slovakia are summarized, with the addition of new collection data. New locality data are provided for five species. Three species are added to the Slovakian list: Icostaminor (Bigot in Thomson, 1858), which was erroneously cited for Moravia instead of Slovakia in the previous checklist, and Ornithophilametallica (Schiner, 1864) and Ornithomyachloropus (Bergroth, 1901), which were overlooked from the last checklist. As a result, the louse fly fauna of Slovakia increases to 19 species: 12 autochtonous species and seven rare, non-native species only occasionally imported to Slovakia or migrating to the country with their hosts. This is by far the largest regional fauna of Hippoboscidae in Central Europe, and matches the richest southern European faunas. In total, 78 host-parasite associations concerning 46 bird-host species from eight orders and nine species of mammals, including humans, have been found from a literature review in Slovakia. Two host-parasite associations are reported from Slovakia for the first time: Ornithomyaavicularia (Linnaeus, 1758) on Prunellamodularis (Linnaeus, 1758) (Aves: Prunellidae) and Lipoptenafortisetosa Maa, 1965 on Homosapiens Linnaeus, 1758 (Mammalia: Hominidae).

Checklist of known moth flies and sand flies (Diptera, Psychodidae) from Armenia and Azerbaijan.

All credible and available published records for 17 species of moth flies known so far from Armenia (Phlebotominae 11 species, Psychodinae 6 species) and Azerbaijan (Phlebotominae 18 species) are summarized. The first records of 18 species of Psychodinae (tribes Mormiini, Paramormiini, Psychodini, Pericomaini) from Armenia and 6 new faunistic records (tribes Psychodini, Pericomaini) for the fauna of Azerbaijan are listed. The checklist of recent moth flies from Armenia includes now 35 species, and from Azerbaijan, 24 species.

Diversity of Armenian mayflies (Ephemeroptera) with the description of a new species of the genus Ecdyonurus (Heptageniidae).

We provide the first commented checklist of Armenian mayflies, based on all relevant literature and recent extensive sampling of 72 localities throughout Armenia during 2011, 2014, and 2015. Altogether 46 species are listed, eight of them reported from Armenia for the first time. One new species, Ecdyonurus (Ecdyonurus) eurycephalus sp. nov. is described (larva and male imago) based on morphological and molecular (COI) data. The species is characterized by a unique head shape in male imago and by the presence of tracheal filaments on gill plate VII in the larval stage.

Faunistic and bibliographical inventory of moth flies from Ukraine (Diptera, Psychodidae).

All important published records for 11 moth fly species known so far from Ukraine are reviewed (Phlebotominae 10 species, Psychodinae 1 species). Occurrences of two problematic taxa, Phlebotomus (Adlerius) brevis Theodor & Mesghali, 1964 and P. (Larroussius) major major Annandale, 1910, and some synonymies are discussed. Threticusnegrobovi Vaillant, 1972 must be deleted for Ukraine (misstatement). First records of 34 species of Psychodinae (tribes Mormiini, Paramormiini, Psychodini, Pericomaini) and one of Sycoracinae from Ukraine are also listed.

Records of Limoniidae and Pediciidae (Diptera) from Armenia, with the first Armenian checklist of these families.

Records of species of the families Limoniidae and Pediciidae are presented from Armenia. A total of 38 species of Limoniidae and four species of Pediciidae are listed. Of these, 27 species of Limoniidae and one species of Pediciidae represent the first records from Armenia. The first checklist of these families from Armenia is appended, containing 77 species of Limoniidae and six species of Pediciidae.