Cetonischema Reitter, 1899

Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, Acta Biologica Universitatis Daugavpiliensis 18 (2), pp. 111-152 : 139

Subgenus Cetonischema Reitter, 1899

[ P. speciosissima (Scopoli, 1786) [ = aeruginosa (Drury, 1770) ]]

Korotyaev & Nikitsky 2001 ( Netocia aeruginosa ).

Comments: The species is still unknown, but quite possible occurs in the southern or south-western parts of the Kaliningrad Region at the northenmost limit of the distributional range. Larvae develop in hollows of old broad-leaved trees (mostly Quercus , but also Populus , Tilia , Fagus , Ulmus ), beetles feed on enfluent tree sup and live mainly in crowns of trees ( Byk & Cieślak 2011; Bunalski et al. 2015a). The species is known in northern, western and central Poland (Bercio & Folwaczny 1979; Byk & Cieślak 2011; Bunalski et al. 2015a), Lithuania ( Tamutis et al. 2011), and Belarus (Alexandovitch & Pisanenko 1991). It is listed in the Russian Red Data Book ( Korotyaev & Nikitsky 2001) as the inhabited Kaliningrad Region species and is insluded in the Red Data Book of the Kaliningrad Region ( Dedkov & Grishanov 2010) as the required especially attention species. The species is considered “near threteaned” at the European level ( Nieto & Alexander 2010). The nearest to the Kaliningrad Region known locality of the species is situated near Olsztyn in Warmian-Masurian region, northern Poland ( Byk & Cieślak 2011).