Works in Bulgaria

The genus Cardiocondyla Emery, 1869 is a diverse group of ants in the subfamily Myrmicinae, with a total of 89 recognised species and subspecies recorded worldwide. A new species …

In the Afrotropical Region, Sphyracephala beccarii (Rondani) and S. munroi Curran are found, the former just extending into the Palaearctic Region. In the latter region, S. babadj…

This study presents data on soil campodeids collected in Romania and Bulgaria in recent years. The collection comprises 12 species of genus Campodea Westwood, 1842 in total. A new…

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…

The genus Salicarus Kerzhner, 1962 is revised, with differential diagnoses and redescriptions provided for nine species. Three distinct species groups were recognized within the g…

The species diversity of the genera Mononchus Bastian, 1865 and Coomansus Jairajpuri & Khan, 1977 was assessed in a study of the mononchid nematodes from a wide range of riparian …

Messor is a diverse genus of Myrmicinae with 168 extant species and subspecies. In the Mediterranean, some of its taxa historically were classified as members of the Messor instab…

Ptychoptera xanthopleura Dvořák, Oboňa & Manko, sp. nov. from Azerbaijan and Georgia, and Ptychoptera staryi Dvořák, Oboňa & Manko, sp. nov. from Bulgaria are described. P. xantho…

Mordellistena A. Costa, 1854, the most species-rich genus of tumbling flower beetles comprises more than 800 species worldwide and more than 150 reported from Europe. Here, a new …

The distribution of Bolbelasmus unicornis (Schrank, 1789) is critically reviewed throughout its range with emphasis on the Czech Republic and Slovakia. The species has been reliab…

Ptychoptera castor Keresztes & Kappert, sp. nov. and P. pollux Keresztes & Török, sp. nov. both belong to the subgenus Ptychoptera (Paraptychoptera) Tonnoir (1919) and are describ…

Atelestus turcicus Barták, sp. nov. (Turkey) and Atelestus ibericus Barták, sp. nov. (Spain) are described and illustrated. A key to all known Palaearctic species of Atelestus is …

The immature stages of ten Mecinus species are described for the first time and those of two other species are redescribed, adding important chaetotaxy characters that were missin…

Simulium reptans (Linnaeus, 1758) and Simulium reptantoides Carlsson, 1962 are two species of the Simulium reptans group whose distribution is unclear because of their confusing t…

A list of 22 new distributional records is presented for 16 Mordellidae species from the Western Palearctic: Variimorda caprai (Franciscolo, 1951) (Montenegro); V. mendax Méquigno…

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…

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

Aphaenogaster illyrica sp. nov., a member of the A. subterranea species group, is described from Dinaric Alps of Slovenia and Croatia, from Golešnica Mt. in north Macedonia, Osogo…

Longidorus polyae sp. n., a bisexual nematode species found in the rhizosphere of pear tree (Pyrus communis L.), is described and characterised using an integrative approach. The …

Defining and recording the loss of species diversity is a daunting task, especially if identities of species under threat are not fully resolved. An example is the Pontocaspian bi…

The Danube delta gudgeon, Romanogobio antipai, has been considered to be extinct because there were no reliable recent observations. The latest record confirmed by a voucher speci…

A new species of the Tipula subgenus Mediotipula is described from the south-eastern part of Albania, south-eastern Europe. Morphologically, the new species is most similar to T. …

Empis (Leptempis) rhodopensis Barták sp. n., Hilara bulgarica Barták sp. n., and Rhamphomyia (Amydroneura) stojanovae Barták sp. n. are described from Bulgaria. Altogether 32 spec…

All records of aquatic dance flies (37 species in subfamily Clinocerinae and 10 species in subfamily Hemerodromiinae) from the territory of Greece are summarized, including previo…

The Balkano-Anatolian genus Parapholidoptera comprises 21 species and the westernmost one, Parapholidoptera castaneoviridis, previously recognized to occur in western Turkey, nort…

In the last decades, several expeditions were organized in Europe by the researchers of the Hungarian Natural History Museum to collect snails, aquatic insects and soil animals (m…

The karyotype and male meiosis, with a particular focus on the presence or absence of chiasmata between the homologs, were studied in the water boatman species Cymatia rogenhoferi…

Bythinella is a minute dioecious caenogastropod that inhabits springs in central and southern Europe. In the Balkans, previous studies have addressed its morphological and genetic…

Two Aelurillus species are described as new, A. alboclypeus sp. n. (♂♀, from Turkey) and A. deltshevi sp. n. (♂, from Macedonia, Bulgaria and Azerbaijan). Aelurillus steliosi Dobr…

Two new species of the genus Drusus (Trichoptera, Limnephilidae, Drusinae) from the Western Balkans are described. Additionally, observations on the biodiversity and threats to th…

The paper integrates two independent studies of numeric morphology-based alpha-taxonomy of the cryptic ant species Temnothorax crassispinus (Karavajev, 1926) and T. crasecundus sp…

The present work contributs to the knowledge on the aquatic mermithids (Nematoda, Mermithidae) occurring in black flies – an insufficiently studied group of parasitic nematodes. I…

Beetles of the family Zopheridae (Coleoptera, Tenebrionoidea) are rarely reported from Bulgaria and available data on their distribution in the country are scarce. Here, we provid…

A total of seven beetle species from the families Mycteridae (two species), Pythidae (one species) and Salpingidae (four species) (Coleoptera, Tenebrionoidea) are known from Bulga…

The insect pest complex of Turkey oak (Quercus cerris L.) was studied in the field protective forest belts planted on the territory of the State Forest Enterprise Dobrich in south…

Integrating intercropping with green manure within crop rotation offers a sustainable pathway to enhance soil microbial diversity and overall agroecosystem health. This study eval…

A comprehensive understanding of trophic interactions in terrestrial ecosystems is crucial for ecological research and conservation. Recent advances in non-invasive methods, such …

Lakes worldwide are under severe pressure from increasing anthropogenic impacts and global warming, creating a growing demand for restoration efforts and sustainable lake manageme…

In recent years, society become much more interested in nature disasters that cause damage. The consequences of these destructive processes of a meteorological, hydrological and g…

A comprehensive morphological and genetic investigation of the widespread copepod species Acartia tonsa Dana 1849 has been conducted across the Black, Caspian, and Baltic seas. A.…

This study documents the first confirmed record of the white trevally (Pseudocaranx dentex) in the Black Sea. A specimen (354 mm TL and weight 703 g) was recorded near Varna, Bulg…

The alien species Macrobrachium nipponense (De Haan, 1849), known as the oriental river prawn, has been identified in the Bulgarian part of the Lower Danube for the first time, ba…

Although Morimus asper, in particular the ssp. funereus, is considered as widespread throughout Bulgaria, a current national mapping of the species is missing. Thus, here we prese…

The European ground squirrel (Spermophilus citellus) is a vulnerable species (IUCN) living in open habitats of Central and South-eastern Europe. Translocations (introductions, rei…

Snakes heavily depend on chemical communication and use chemical cues for trailing, foraging, searching for mates, and other behaviors. Snake pheromones reported so far are comple…

Thermal ecology plays a key role in shaping the behavior and distribution of reptiles, particularly under climate stress. Understanding how sympatric lizard species manage their t…

Molecular studies have outlined several mitochondrial lineages of Vipera ammodytes, but the limits of their distribution ranges remain unclear due to limited sampling throughout t…

Different snake species may be active at various times of the day. In Europe, most snake species are predominantly diurnal, but about a third are partially or principally crepuscu…

A communal hibernaculum situated in Southwestern Bulgaria and its adjacent area (4 km in diameter) was studied. Seven snake species used this hibernating den, Malpolon insignitus,…

This paper presents the results obtained from a short survey performed in Bulgaria, southeast Europe, where the trichomycetes (sensu lato), an ecological group of arthropod gut en…