Isotomus speciosus (Schneider, 1787)
ssp. barbarae Sama, 1977

Subfamilia: CERAMBYCINAE  /  Tribus: CLYTINI

Isotomus speciosus barbarae
[Photo © P.Jelínek]

Isotomus speciosus barbarae, an endemite to Italy (12 known localities), is endangered taxon with a small area of occupancy (less than 2 000 km²). I. speciosus barbarae was originally described by Gianfranco Sama as I. barbarae [✧], but it was downgraded to the subspecies rank in 2018 [▽]. Larvae of this remarkable longhorn beetle develop in dead wood of deciduous trees (Ostrya carpinifolia, Carpinus orientalis) in woodlands in the hills and sub-montane regions of the Appenine ridge. Recently was discovered also in Latium (Central Italy; ❖).

Body length:12 - 20 mm
Life cycle:2 - 3 years
Adults in:May - July
Host plant:Ostrya carpinifolia, Carpinus orientalis
Distribution:an endemic subspecies to Italy

The depicted beetles were reared from larvae found in a dead branch of Fagus orientalis in San Gregorio (Lazio, Rome province, Central Italy).

Collected by P.Jelínek

Sama G.:
Un nuovo Isotomus italiano: Isotomus barbarae n. sp.
Bollettino della Società Entomologica Italiana 109 (4-6): 66-74, 1977 [download pdf icon]

Gigli M.:
Isotomus barbarae Sama, 1977, nuova per il Lazio (Coleoptera, Cerambycidae).
Bollettino dell’Associazione Romana di Entomologia 63 (1-4): 59-62, 2008. [download pdf icon]

Rapuzzi P. and Sama G.:
New taxa and notes on the systematic of palearctic Longhorn-Beetles (Coleoptera: Cerambycidae).
Munis Entomology & Zoology 13 (1): 1-39, 2018. [download pdf icon]

Isotomus speciosus barbarae
Isotomus speciosus barbarae
Isotomus speciosus barbarae
Isotomus barbarae ♂   [Photo © P.Jelínek]
Isotomus speciosus barbarae
Isotomus speciosus barbarae
Isotomus barbarae ♀   [Photo © P.Jelínek]

SubfamiliaCerambycinae Latreille, 1802
TribusClytini Mulsant, 1839
GenusIsotomus Mulsant, 1863
SpeciesIsotomus speciosus (Schneider, 1787)
SubspeciesIsotomus speciosus barbarae Sama, 1977