LEPTURA AURULENTA ( COLEOPTERA , CERAMBYCIDAE ) , A NEW RECORD OF A VERY RARE SPECIES IN RUSSIA

Introduction The Mordovia State Nature Reserve is located in the Temnikov district of the Republic of Mordovia. It belongs to the Central Russian subprovince of the Eastern European province of the European broad-leaved forest region on the wooded rightbank of the River Moksha (Gribova et al., 1980). The forest-steppe naturally marks the boundary of the protected area from the south. The climate of the Mordovia Reserve is related to the Atlanticcontinental region of the temperate zone (Gafferberg, 2015). Intensive entomological studies of recent years have shown many new and interesting findings of Coleoptera species in the Mordovia Reserve area (Legalov et al., 2014; Egorov et al., 2015, 2016, 2017; Egorov & Shapovalov, 2017; Ruchin & Egorov, 2017; Semenov, 2017). The family of longicorn beetles (Cerambycidae) belongs to one of the most interesting taxonomic groups of Coleoptera. In ecosystems, the species of this family participate, first of all, in the wood biodegradation (at larval stage) and pollination of flowering plants (imago). The longicorn beetles’ research is also important for biodiversity study. However, some species of longicorns are very rare and listed in the Red Data Books on federal and regional level. The present report contains information about the discovery of the rarest longicorn beetle in Russia – Leptura aurulenta Fabricius, 1793 in the Mordovia State Nature Reserve. Material The Republic of Mordovia, Temnikov district, 17 km NW from the city of Temnikov, Mordovia State Nature Reserve, forest square 324, 15.07.2017, 1 specimen, A.B. Ruchin (Fig. 1). The specimen was transferred to the collection of the Zoological Institute of the Russian Academy of Sciences (St. Petersburg, Russia).


Introduction
The Mordovia State Nature Reserve is located in the Temnikov district of the Republic of Mordovia.It belongs to the Central Russian subprovince of the Eastern European province of the European broad-leaved forest region on the wooded rightbank of the River Moksha (Gribova et al., 1980).The forest-steppe naturally marks the boundary of the protected area from the south.The climate of the Mordovia Reserve is related to the Atlanticcontinental region of the temperate zone (Gafferberg, 2015).Intensive entomological studies of recent years have shown many new and interesting findings of Coleoptera species in the Mordovia Reserve area (Legalov et al., 2014;Egorov et al., 2015Egorov et al., , 2016Egorov et al., , 2017;;Egorov & Shapovalov, 2017;Ruchin & Egorov, 2017;Semenov, 2017).
The family of longicorn beetles (Cerambycidae) belongs to one of the most interesting taxonomic groups of Coleoptera.In ecosystems, the species of this family participate, first of all, in the wood biodegradation (at larval stage) and pollination of flowering plants (imago).The longicorn beetles' research is also important for biodiversity study.However, some species of longicorns are very rare and listed in the Red Data Books on federal and regional level.The present report contains information about the discovery of the rarest longicorn beetle in Russia -Leptura aurulenta Fabricius, 1793 in the Mordovia State Nature Reserve.

Material
The Republic of Mordovia, Temnikov district, 17 km NW from the city of Temnikov, Mordovia State Nature Reserve, forest square 324, 15.07.2017, 1 specimen, A.B. Ruchin (Fig. 1).The specimen was transferred to the collection of the Zoological Institute of the Russian Academy of Sciences (St. Petersburg, Russia).

Description of the biotope
The female L. aurulenta was caught on the western narrow clearing of forest square 324 of the Mordovia State Nature Reserve.The beetle sat on the inflorescence of a plant of the Apiaceae family.This quarter has a developed forest and meadow vegetation.In the south-western and north-western corners of this quarter there are small areas of ripening and ripe lime trees, in the stand of which occur sparsely Quercus robur L., Ulmus laevis Pall.and U. glabra Huds.The undergrowth includes Euonymus verrucosa Scop.and Padus avium Mill.The herbaceous level is formed mainly by Aegopodium podagraria L., Dryopteris filix-mas (L.) Schott, Lamium maculatum (L.) L., in damp places Urtica dioica L. and Humulus lupulus L. occur.There is a lot of leaf litter.Next to the lime (Tilia cordata Mill.) trees there is a small area of ripening oak (Quercus robur) forest with a similar species composition of the flora.It is located in the south-western part of the quarter along the southern clearing.Oak forests occupy small areas in the central, eastern and southeastern parts of the forest quarter (Fig. 2

Biology
The females of this species are usually found on the trunks of hardwood trees (Quercus, Ulmus, Salix, Populus, Betula, Alnus, Prunus), while males often occur on flowers (Holzinger et al., 1999;Alexander & Anderson, 2012;Giovagnoli et al., 2012;Smets et al., 2013).Larvae develop in the dry wood of old stumps and roots of the above-mentioned hardwood trees, as well as in fallen trunks and branches and in dead parts of living trees.The life cycle lasts for several years (Smets et al., 2013).
Thus, the discovery of L. aurulenta in the Mordovia State Nature Reserve is the third reliable finding of this rare beetle species in Russia.And this is the most eastern finding of L. aurulenta within its range.Due to the extreme rarity of L. aurulenta in Russia its inclusion in the Red Data Book of the Russian Federation is needed and recommended.

Fig. 1 .
Fig. 1.Leptura aurulenta, a female and the label of the collected specimen.