Acta Carpathica Occidentalis, 2026 (vol. 17)
Articles
Influence of geological and morphometric conditions on the size of landslides in a selected transect of the Outer Western Carpathians
Sára Němcová
Acta Carp. Occ. 17: 157-172, 2026 | DOI: 10.62317/aco.2026.011 
The southeastern part of the Czech Republic is formed by the Flysch Belt of the Outer Western Carpathians, which stretches from the southwestern borders with Austria and continues along the Czech-Slovak border northeastward to Poland. Although knowledge in the field of slope deformations is crucial for understanding relief evolution, studies addressing the quantification of the bedrock‘s influence on landslide genesis remain scarce. The aim of this study is to assess the influence of the flysch bedrock on the size and spatial distribution of landslides within the Magura Group of Nappes of the Outer Western Carpathians, while complementarily...
New record of the European‑protected horned powder‑post beetle Stephanopachys substriatus (Coleoptera: Bostrichidae) in the Czech Republic after seventy years
Ondřej Konvička, František Štěpánek
Acta Carp. Occ. 17: 153-156, 2026 | DOI: 10.62317/aco.2026.010
The horned powder post beetle Stephanopachys substriatus (Paykull, 1800) is a saproxylic beetle species listed in Annex II of the Habitat Directive and, until now, known from the Czech Republic only from historical records. This article reports the first confirmed occurrence after seventy years, from the Hostýnské hills from the Moravia region. This record is of major importance for species conservation and management planning in the area. The authors recommend including the species among the conservation targets of the Site of Community Importance Hostýnské vrchy and its monitoring. The discussion also addresses the impact of the recent...
Carex magellanica and other relic mire species of the upper Orava region (northern Slovakia)
Daniel Dítě, Marián Jasík
Acta Carp. Occ. 17: 128-152, 2026 | DOI: 10.62317/aco.2026.009
Our contribution summarizes the recent distribution of vascular plants primarily growing in mires in the northernmost part of Slovakia, in upper Orava region. We provide brief characteristics of their ecological preferences, plant communities, and state of their habitats. We supply these data with our observations to the recent micropopulations of extremely rare species in Slovakia like Carex magellanica which has a single known locality within the entire Western Carpathians, further Carex chordorrhiza, C. limosa and Scheuchzeria palustris having also a single known locality in upper Orava, and five other species...
First record of assassin bug Coranus kerzhneri (Hemiptera: Heteroptera: Reduviidae) in Silesia
Lukáš Puch, Petr Kment
Acta Carp. Occ. 17: 124-127, 2026 | DOI: 10.62317/aco.2026.008
Assassin bug Coranus kerzhneri was found in a former greywacke quarry in Litultovice in Opava region (GPS: 49°53’41”N, 17°42’55”E). This is the first discovery of this species in Silesia and the northernmost record of this species in the Czech Republic and also from the whole of Central Europe. The discovery represents first recent evidence of it‘s distribution outside the Pannonian region and proves its occurrence in localities with anthropogenic influence.
Beetles (Coleoptera) of the Bečva river and its surroundings at the site of the planned construction of the Skalička dam, part II.
Ondřej Konvička, Dušan Trávníček, Filip Trnka, Josef Kašák, Jiří Ch. Vávra, Vojtěch Rýznar, Eduard Ezer, Aleš Sedláček, František Černocký
Acta Carp. Occ. 17: 58-123, 2026 | DOI: 10.62317/aco.2026.007
The Bečva River is the last of the major gravel‑bed rivers in the Czech Republic whose flow regime is not influenced by a dam on its main course. Although most of its channel was regulated during the 20th century, several short near‑natural stretches with valuable biota have been preserved. Moreover, following the floods at the turn of the 20th and 21st centuries, additional sections of the river have escaped the effects of earlier channelization, and a gradual restoration of natural river dynamics has been taking place. One such site is located near the village of Skalička. Coincidentally, this very place had been selected for the...
Third contribution to the faunistics of beetles (Coleoptera) in the Wallachian region (eastern Moravia, Czech Republic)
Ondřej Konvička
Acta Carp. Occ. 17: 18-57, 2026 | DOI: 10.62317/aco.2026.006
Faunistic records of beetles (Coleoptera) from the Wallachian region (eastern Moravia, Czech Republic) are presented. The most of the published records comes from the last 13 years (2013–2025). In total, 484 beetle species belonging to 59 families are listed. Of these, 6 species are classified as critically endangered, 21 as endangered, 28 as vulnerable, and 29 as near threatened in the Red List of Invertebrates of the Czech Republic. Altogether, 84 species included in the Red List are recorded from the region. I consider the most important of these species for the region following: Altica brevicollis, Cryptocephalus octopunctatus,...
The first record of the bark bug Aradus aterrimus (Heteroptera: Aradidae) in the Czech Republic
Ondřej Konvička, Petr Kment
Acta Carp. Occ. 17: 13-17, 2026 | DOI: 10.62317/aco.2026.005
This article presents the first record of the bark bug Aradus (Aradus) aterrimus Fieber, 1864 in the Czech Republic. A single male was captured in a flight interception trap placed on a large fallen oak situated on a steep, south-facing slope above a river near the town of Karolinka in eastern Moravia. The locality hosts a considerable number of old, often hollow trees (Acer pseudoplatanus, Fagus sylvatica, Quercus petraea, Tilia cordata), with older shrubs of Corylus avellana and younger individuals of the aforementioned tree species in the undergrowth. A large amount of dead wood is present,...
Contribution to the knowledge of the ichthyofauna in the Slovak section of the Vlára River, with emphasis on the distribution and ecology of the Bulgarian golden loach [Sabanejewia bulgarica (Drensky, 1928)]
Peter Križek, Tibor Krajč, Radim Kočvara
Acta Carp. Occ. 17: 1-12, 2026 | DOI: 10.62317/aco.2026.002
The work aimed to evaluate the current state of the ichthyofauna in the Slovak section of the Vlára River, paying particular attention to the distribution and selected population characteristics of the Bulgarian golden loach (Sabanejewia bulgarica). As part of the ichthyological survey, a total of 17 fish species belonging to 10 families were recorded at four localities in the longitudinal profile of the river. The barbel and grayling zone’s characteristic rheophilic species dominated in terms of abundance (A. bipunctatus, G. obtusirostris, P. phoxinus, S. cephalus a B. barbus). The Bulgarian golden...