Black-and-yellow Spotted Longhorn Beetle

It is a species of flower longhorns belonging to the family Cerambycidae, subfamily Lepturinae. The adults grow up to 13 - 20 mm 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. I have found them feeding on Hairy Rockrose flower [ http://www.projectnoah.org/spottings/23007088 ] and one flew on thistle flower too.