Review of the subgenus Kostiniclytus Danilevsky, 2009 of the genus Xylotrechus Chevrolat, 1860 (Coleoptera: Cerambycidae)
Review of the subgenus Kostiniclytus of the genus Xylotrechus is given. The following taxons are described: Xylotrechus volkovitshi sp. n. from Turkey (Central Anatolian Region), Xylotrechus katerinae sp. n. from South and South-East Kazakhstan, Xylotrechus arnoldii tenebrosus ssp. n. from South Kazakhstan (Priaralye). A key to species and subspecies is elaborated. The descriptions, examined materials, data of distribution and biology, photo of specimens and male genitalia are given for each taxon.