Agapanthia violacea
Agapanthia violacea is a species of flat-faced longhorn beetle belonging to the family Cerambycidae, subfamily Lamiinae. This beetle is present in most Europe and in the Near East. The different coloration between male and female demonstrates the great variability of colours. The adults grow up to  and can be encountered from May through August, completing their life cycle in one year. They are polyphagous on herbaceous plants, mainly feeding on Medicago sativa, Onobrychis viciifolia, Centranthus ruber, as well as on Scabiosa, Echium, Psoralea, Valeriana and Salvia species. References

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Cerambyx

violacea
Beetles of Europe
Beetles described in 1775
Taxa named by Johan Christian Fabricius