Rosalia alpina (Linnaeus, 1758)
ssp. alpina (Linnaeus, 1758)

Rosalia alpina
[Photo © M.Hoskovec]

Rosalia alpina is an endangered and strictly protected icon of saproxylic biodiversity throughout its Europen range of occurence. Despite its popularity, information on its habitats and host-plants is insufficient, which may compromise the adoption of suitable conservation strategies. Rosalia alpina has been considered as montane species associated with beech (Fagus sylvatica) in Central Europe, whereas in Southern Europe the species has often been reported from lowlands and its host spectrum is broader. For example, in Bulgaria (Ropotamo, Black Sea coast) we observed its development in living tissue of field maple (Acer campestre).

Lukáš Čížek et al. [❖] published evidence of an elm-feeding population of Rosalia alpina occurring in a lowland beech-free forests in the Czech Republic. This information available suggest, that Rosalia alpina spreads into central European lowland forests along large rivers, and that spectra of hosts and habitats exploited by Rosalia alpina in Central Europe are wider than generally thought. Alteration of its habitat preference has either occurred in Central European populations, or lowland-inhabiting populations from the South are spreading northwards, possibly due to climate change.

Body length:15 - 38 mm
Life cycle:2 - 3 years
Adults in:June - August
Host plant:polyphagous in deciduous trees, preferring beech (Fagus), but also in Ulmus, Carpinus, Tilia, Castanea
Distribution:Albania, Austria, Belarus, Bosnia and Herzegovina, Bulgaria, Corsica, Croatia, Czechia, France, Germany, Greece, Hungary, Italy, Macedonia, Montenegro, Poland, Romania, Russia, Serbia, Sicily, Slovakia, Slovenia, Spain, Switzerland, Turkey, Ukraine

The mounted beetles were collected on beech logs in West Ukraine. The living beetles were photographed in Bezděz Mt. (North Bohemia), one of the last (and strictly protected) locality of this beautiful species in the Czech Republic.

Collected by M.Hoskovec

Čížek L., Schlaghamerský J., Bořucký J., Hauck D. and Helešic J.:
Range expansion of an endangered beetle: Alpine Longhorn Rosalia alpina (Coleoptera: Cerambycidae) spreads to the lowlands of Central Europe.
Entomologica Fennica 20: 200-206, 2009. [download pdf icon]

Rosalia alpina
[Photo © M.Hoskovec]
Rosalia alpina
Rosalia alpina
Rosalia alpina
[Photo © M.Hoskovec]

Subfamilia: Cerambycinae Latreille, 1802
Tribus: Compsocerini Thomson, 1864
Genus: Rosalia Audinet-Serville, 1833
Species: Rosalia alpina (Linnaeus, 1758)
Subspecies: Rosalia alpina alpina (Linnaeus, 1758)