Gonioctena intermedia, (HELLIESEN, 1913)

Alekseev, Vitaly I. & Bukejs, Andris, 2010, Contributions to the knowledge of beetles (Insecta: Coleoptera) in the Kaliningrad region. 1., Baltic Journal of Coleopterology 10 (2), pp. 157-176 : 170

47. GONIOCTENA INTERMEDIA (HELLIESEN, 1913) * Examined material: Recorded from only one locality: Zelenogradsk district, 1 km W Svetlogorsk, 54°56´6.5´´N 20°6´29.4´´E, 17.V.2009 (5 exx., mixed forest, on Sorbus aucuparia , leg. V. Alekseev) .

Comments: New species for the fauna of the Kaliningrad region. The limits of the distribution range of this leaf-beetle require further investigation. It is possibly a boreomontaine species and its range extends to southern Norway, Finland, the north-western part of European Russia (Karelia, Murmansk region), Estonia, Latvia and the mountains of Central Europe (Alps, Carpathians, Beskids, Bieszczads), Croatia and Hungary ( Bieńkowski 2004, Borowiec 2004, Warchałowski 2003). The species feeds on Sorbus aucuparia ( Warchałowski 2003) . G. intermedia (Helliesen, 1913) and G. quinquepunctata (Fabricius, 1787) are sibling species: they are externally very similar and can be confidently distinguished only on the basis of the shape of the flagellum ( Fig. 2 ).

Figures

Fig. 2. Aedeagus with flagellum:A – Gonioctena quinquepunctata (Fabricius, 1787), B – G. intermedia (Helliesen, 1913).