Page 181 - Proceedings of the State Natural History Museum. Issue 36 (Lviv, 2020)

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Ужгородський національний університет, м. Ужгород
e-mail: valeriia.dedus@gmail.com

Diedus V.
Diversity of minute tree-fungus beetles (Coleoptera: Ciidae) of primeval and managed beech
forest of the Carpathian Biosphere Reserve
The study of factors that affect to the biodiversity of forest insects has not lost its relevance for
several decades. As obligate fungicolous, minute tree-fungus beetles (Coleoptera, Ciidae) are one of
the main destructors of saproxylic fungi. Since primeval forests are characterized by different age of
tree stands and a large volume of dead wood of different stages of decomposition – the number of
saproxylic fungi, and, as a consequence, minute tree-fungus beetles, show a high variety. In managed
forests, selective felling and removal of dead wood is carried out, which leads to the loss of habitats
and, as a consequence, to the impoverishment of the biodiversity of minute tree-fungus beetles. The
fauna of minute tree-fungus beetles of primeval beech forest of the Uholsky massif of the Carpathian
Biosphere Reserve and managed 150-year-old beech forest from adjacent territories has been studied.
According to the literature, at the beginning of our research the fauna of Ciidae were consisted 34
species of fauna of the Ukrainian Carpathians, and 11 species were known for the beech primeval
forests of the Uholka Shyrokyi Luh preservation massif of the Carpathian Biosphere Reserve (CBR).
The material was collected with the combined window-type traps (polytrap) during the growing season
2017-2018. In general, 3302 specimens of minute tree-fungus beetles, belonging to 31 species from 8
genera, were collected and identified. For the first time for the region of the Ukrainian Carpathians
were indicated such species: Cis rugulosus Mellie, 1848, Cis striatulus Mellie, 1848, Ennearthron
pruinosulum (Perris in Abeille, 1864) and Rhopalodontus strandi Lohse, 1969. Taking into account our
research and literature data, the faunal list of minute tree-fungus beetles for the Ukrainian Carpathians
include 38 species. The species richness of beech primeval and 150-year-old managed forest is close
in value, and the relative density of individuals in primeval forest is three times higher than its value in
managed forest. Thus, 30 species from 8 genera (2442 individuals) have been identified for primeval
beech; for managed beech forest – 28 species from 8 genera (860 specimens of minute tree-fungus
beetles). Primeval beech forests are an important center for the diversity of minute tree-fungus beetles,
because of the 38 species known from the Ukrainian Carpathians, 31 species have been registered in
the Uholsky massif of the Carpathian Biosphere Reserve.
Key words: Coleoptera, Ciidae, minute tree-fungus beetles, saproxylic fungi, primeval forest,
Carpathian Biosphere Reserve.