Appearance
The adults grow up to 13–20 millimetres and can be encountered from May through August, completing their life cycle in two-three years. Adults only live two-four weeks.The head and pronotum are dark-brown, while elytra are yellowish, with black dots and stripes, rough imitations of wasps, which probably gives them some protection from birds.
The adults are very common flower-visitors, especially Apiaceae species, feeding on pollen and the nectar.
Food
Larvae are polyphagous in deciduous trees, mainly feeding on "Picea abies", "Corylus avellana", "Fagus sylvatica", "Castanea sativa" and "Ostrya carpinifolia", as well as on "Quercus", "Carpinus", "Salix", "Alnus", "Populus" and "Betula" species.References:
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