Obrium cantharinum (Linnaeus, 1767)
ssp. cantharinum (Linnaeus, 1767)

Subfamilia: CERAMBYCINAE  /  Tribus: OBRIINI
Obrium cantharinum
[Photo © Daniel Rydzi]

Obrium cantharinum is a widespread species distributed from western Europe through the Caucasus and Siberia to the Far East. The species is ecologically associated with Populus species (P. tremula, P.alba) but it can also develop in the wood of other tree species such as Salix, Betula, Quercus, Malus, Sorbus, Robinia pseudoacacia, Fraxinus and Rosa. Larvae of O. cantharinum develop in dying/dead branches or thin stems (0.5 - 20 cm in diameter) of mainly mature, often overmature trees. Beetles prefer to colonize the apex, then central section of the crown, and sometimes significant parts of the apex and trunk simultaneously. Larvae feed subcortically, creating longitudinal galleries deeply impressed in sapwood and densely sealed with fine frass consisting of wood and partly bark. Mature larvae enter the sapwood, creating in its upper layer hook-shaped pupal cell along the trunk and plug inlet with frass. Pupation and hatching in spring, life-cycle 2 years. Adults, active from late April to August, can be found on their host trees. O. cantharinum is in Central Europe active mostly after dusk/during night and can be attracted to light sources [❖][▽].

Body length:5.5 - 10 mm
Life cycle:1 - 2 years
Adults in:April - August
Host plant:polyphagous in deciduous trees, but strongly preferring Populus
Distribution:Europe, Caucasus, Transcaucasia, Turkey. Siberia, Russian far East

Tht depicted beetles were reared from larvae found in a dead branch of poplar (Populus) in Pohansko (Břeclav district, South Moravia, Czechia) in 2016.

Collected by Daniel Rydzi

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 135-136], 1998 [ISBN: 80-238-2627-1]. [download pdf icon]

Cherepanov A.I.:
Cerambycidae of Northern Asia, Volume 2 - Cerambycinae Part I.
Amerind Publishing, New Delhi: 304pp [pages 34-39], 1988. [download pdf icon]

Obrium cantharinum
Obrium cantharinum
Obrium cantharinum
[Photo © Daniel Rydzi]

SubfamiliaCerambycinae Latreille, 1802
TribusObriini Mulsant, 1839
GenusObrium Dejean, 1821
SpeciesObrium cantharinum (Linnaeus, 1767)
SubspeciesObrium cantharinum cantharinum (Linnaeus, 1767)