Achrioptera fallax

 

Food Plant: bramble, oak

Adult male/female will create a warning signal with their wings, when being disturbed. They also open their wings, so the red color is visible and also warns a possible attacker. If this doesn't keep them away, adult females can attack enemies with their thorny legs.

Trivial names:
German: Türkisblaue Riesenstabschrecke
English: Big Blue Stick Insect