BUMBLEBEES (HYMENOPTERA: APIDAE, BOMBINI) OF THE PENZA REGION AND THE ROLE OF THE STATE NATURE RESERVE “PRIVOLZHSKAYA LESOSTEP'” IN THEIR PROTECTION

Dobrolyubova Tat'yana Vasil'evna, Candidate of biological sciences, leading researcher, State Nature Reserve “Privolzhskaya lesostep” (12A Okruzhnaya street, Penza, Russia), tv_dobr@bk.ru

595.799

Background. The bumblebee fauna of the Penza region have not been fully explored. It is not possible to identify some rare species of bumblebees, that need protection, which is especially important in connection with publication of a new edition of the Red Book of animals. The purpose of the work is to add species to the list of bumblebees, to discover new species rare for the area.
Materials and methods. The author was collecting bumblebees in the territory of the State Nature Reserve “Privolzhskaya lesostep'” and in some other areas (the city of Nikolsk and Nikolsk district, Penza and Lunino districts) in 2011–2014. The arealographic analysis of the fauna was conducted using a range of habitats, proposed by K. B. Gorodkov, and compared it with bumblebee faunas of regions that are close geographically or ecologically.
Results. The species list of bumblebees in Penza region increased up to 27 species of bumblebees and 6 species of cuckoo-bees. Two species of bumblebees: B. deuteronymus and B. schrencki, and 2 species of cuckoo-bees: B. norvegicus and B. sylvestris have been registered for the first time in Penza region. Ten subgenera of the genus Bombus have been identified according to modern taxonomy. 11 species of bumblebees of the subgenus Thoracobombus and 6 species Psithyrus dominated. Analysis of the arealografic composition showed the dominance of Euro-Siberian (37 %) and transpalearctic species (33 %). In zonal relation, almost half of the species list (49 %) were species with temperate (moderate zone from taiga to steppe) proliferation. The second place (33 %) was the group of subboreal species (nemoral zone, forest-steppe and steppe). 4 species had a wide arcto-temperate spread from tundra to dry steppes and only 2 species were of boreal taiga-forest group. A comparison with the faunas of other regions revealed the highest similarity with the Ulyanovsk region and forest-steppe zone of the West Siberian plain. The State Nature Reserve “Privolzhskaya lesostep'” plays an important role in protection of rare species of bumblebees. 9 rare species of bumblebees inhabits its territory, 5 of which can be included in the main list, and 4 – in the Annex to the new Red Book of Penza region. 7 species of bumblebees of the regional fauna: B. argyllaceus, B. armeniacus, B. deuteronymus, B. fragrans, B. schrenсki, B. sylvestris and B. norvegicus have been proposed for inclusion into the main list of the new edition of the Red Book of Penza region, and 4 species: B. cullumanus, B. pomorum, B. pratorum and B. sorоensis have been proposed for inclusion into the Annex to the Red Book.
Conclusions. For 27 species of bumblebees and 6 species of cuckoo-bees (subgenus Psithyrus) the habitats have been identified in the Penza region, of which 4 species are new for Penza region: 2 species of bumblebees of the subgenus Thoracobombus: Bombus (Thoracobombus) deuteronymus Schulz, 1879; Bombus (Thoracobombus) schrencki Morawitz, 1881, and 2 species of bumblebees of the subgenus Psithyrus: Bombus (Psithyrus) norvegicus (Sparre-Schneider, 1918) and Bombus (Psithyrus) sylvestris (Lepeletier, 1832). Euro Siberian and transpalearctic species, and according to a zonal criterion – temperate and subboreal ones, dominate in the composition of the fauna. The State Nature Reserve “Privolzhskaya lesostep'” plays an important role in protection of rare bumblebee species in Penza region. 24 species of bumblebees, including 9 rare one, live on the territory of the reserve.

bumblebees, fauna, new and rare species.

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