A new remarkable species of Xyletinus Latreille, 1809 (Coleoptera: Ptinidae: Xyletininae) from southern Kazakhstan.

Xyletinus (Xeronthobius) diaphanus sp. n. from southern Kazakhstan is described, illustrated, and compared with the known members of the subgenus.

A review of the subgenus Mesolethrus Nikolajev, 2003 of the genus Lethrus Scopoli, 1777 (Coleoptera: Geotrupidae: Lethrinae) with description of a new species.

A review of the subgenus Mesolethrus Nikolajev, 2003, with diagnostic characters, distribution data and a key to the species is provided. Lethrus (Mesolethrus) dyonini A. Shapovalov & Bagaturov, new species, is described from Uzbekistan (Tashkent Region).

Results of surgical treatment of children with Chiari I malformation using differentiated intraoperative tactics of choosing the volume of intervention.

Background: Despite the presence of numerous publications and analytical reviews in the foreign literature, there is no universally accepted algorithm for the surgical treatment of Chiari I malformation (MC I) in children. Moreover, in the domestic literature, the number of publications devoted to the problems of surgical treatment of MC I in children is significantly limited, which, in our opinion, this is the reason for the relevance of this work.

Objective: To study the results of surgical treatment of children with MC I when applying differentiated tactics of intraoperative choice of intervention volume.

The occurrence of the genus Calydus Reitter, 1896 (Coleoptera, Meloidae) in Afghanistan with the description of a new species.

Calydus yaroslavi new species is described from Central Afghanistan, Bamian Province, Bande-Amir National Park. The genus Calydus Reitter, 1896 is recorded for Afghanistan for the first time.