Leioderes tuerki seems to be endemic to South Turkey, namely the Taurus mountains. It develops in Quercus and Juglans but it is likely that also other deciduous trees serve as its host. It is a crepuscular to nocturnal species. The beetles start to activate at dusk and can be observed in flight around their potential hosts. Occasionally they gather on flowering shrubs like hawthorn and stay there all over the night. In the next morning they can still be observed sitting in the flowers but completely disappear before noon. The adults were once beaten from dry branches of Juglans regia during the day. Body length: 8 - 13 mm Life cycle: 2 years Adults in: May - June Host plant: deciduous trees (Quercus, Juglans etc.) Distribution: Turkey The beetle in the picture was found sitting in a blossoming hawthorn (Crataegus sp., Rosaceae) near Ciftehan village (South Turkey).