Xylotrechus (Rusticoclytus) rusticus (Linnaeus, 1758)
[= Rusticoclytus rusticus (Linnaeus, 1758)]

Subfamilia: CERAMBYCINAE  /  Tribus: CLYTINI
Xylotrechus rusticus
[Photo © David Navrátil, click on the picture for 4K resolution]

Xylotrechus rusticus, an Euroasian species widespread from Spain to Japan, has been described from Sweden as Leptura rustica by Carl Linné in 1758 [☆]. The species occurs in Central Europe both in lowland floodplain forests and their remnants, where it develops in poplars (Populus spp.) and willows (Salix spp.), and in the preserved submontane and montane forests, where it prefers mainly beech (Fagus sylvatica). The species is very variable in coloration of legs and toment of elytra (see the picture of mounted beetles).

Larvae of X. rusticus develop in branches and trunks of dying/dead standing, uprooted, felled or fallen deciduous trees. The shape of larval galleries varies considerably depending on the type of host tree, but they can be also different in the same wood. When developing in hardwood trees (e.g, Fagus, Ulmus), the larvae create irregular galleries between the bark and the sapwood and bore mostly only a shorter corridor into the wood, which continues through the pupal cell and the exit corridor. In trees with soft wood (e.g. Populus, Salix), the galleries in the wood are much longer before the pupation, often the larvae return to the phloem and again penetrate deep into wood during the feeding (see the X. rusticus biology page). Adults, active from end of May to early September (depends on altitude and region), can be found on logs, felled and broken or dead standing trees [❖][✧][▽].

Body length:10 - 21 mm
Life cycle:1 - 2 years
Adults in:May - September
Host plant:polyphagous in deciduous trees (especially in Populus, also in Fagus, Salix, Ulmus, Betula, Acer, Tilia etc.)
Distribution:Europe, Siberia, Caucasus, Transcaucasia, Turkey, North Iran

The mounted specimens were collected in: ♂♂AB - Štúrovo environs (Nové Zámky district, Nitra region, South Slovakia) on May 11, 2007; ♂C - Ihlara Valley (Ihlara Vadisi) near Güzelyurt (Aksaray Province, Cappadocia, Turkey) in June 12, 1992; ♀ - reared from pupa found in trunk of a dead poplar (Populus alba) in Pohansko environs (Břeclav district, South Moravia, Czechia) (Pohansko) on April 8, 2008.

The depicted living beetles were: (DR) - collected in Niva Dyje Natural Park (Břeclav district, South Moravia, Czechia) on May 12, 2018 and in Bezděz Mt. (Bezděz, Česká Lípa district, Liberec region, North Bohemia, Czechia) on June 2, 2019; (PJ) - reared from larva collected in a dead branch of white poplar (Populus alba) in Pouzdřany (Břeclav district, South Moravia, Czechia) in winter 2015; (MH) - collected in a mountain valley in Güreşçi environs (South-Eastern Taurus mountain range, Bitlis province, SE Turkey) in June 2011.

Collected by David Navrátil, Michal Hoskovec, Daniel Rydzi and Petr Jelínek

Linné C.:
Systema naturæ per regna tria naturæ secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis.
Systema naturae (Editio 10), Laur. Salvius, Holmiae 1: iii + 824 pp, 1758. [download pdf icon]

Sláma M.E.F.:
Tesaříkovití – Cerambycidae České republiky a Slovenské republiky / Cerambycidae of the Czech Republic and Slovak Republic.
Milan Sláma private printing, Krhanice, 383pp [pages 167-168], 1998 [ISBN: 80-238-2627-1]. [download pdf icon]

Vitali F.:
Atlas of the Insects of the Grand-Duchy of Luxembourg: Coleoptera, Cerambycidae.
Ferrantia, Musée national d’histoire naturelle, Luxembourg 79: 1-208 [pages 48-49], 2018. [download pdf icon]

Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 2 - Cerambycinae Part II.
Amerind Publishing, New Delhi: 354pp [pages 25-31], 1988. [download pdf icon]

Xylotrechus rusticus
Xylotrechus rusticus
Xylotrechus rusticus
Xylotrechus rusticus
[Photo © Daniel Rydzi]
Xylotrechus rusticus
Xylotrechus rusticus
Xylotrechus rusticus
[Photo © Petr Jelínek]
Xylotrechus rusticus
[Photo © Michal Hoskovec]

SubfamiliaCerambycinae Latreille, 1802
TribusClytini Mulsant, 1839
GenusXylotrechus Chevrolat, 1860
SubgenusRusticoclytus Vives, 1977
Species Xylotrechus (Rusticoclytus) rusticus (Linnaeus, 1758)