Find of the red book species Orussus abietinus (Hymenoptera, orussidae) in the Baikalo-Lensky reserve
Data on the first finding of rare species of Orussus abietinus (Scopoli, 1763) in the territory of the Baikal-Lena State Nature Reserve are presented. Due to the wide food base (xylophagous larvae of the horn-tails, longhorn beetles and buprestid beetles) and the absence of limiting factors, it is difficult to explain the low number of Orussus specimens in nature.