At up to an inch and a half in length, this beautiful wasp (Great Potter Wasp – Delta unguiculatum – Avispa Alfarera) is the largest European species of the Eumeninae subfamily. The head is black with a yellow face and a yellow line behind the large eyes. The jaws are reddish brown. The antennae are … Continue reading Great Potter Wasp – Delta unguiculatum – Avispa Alfarera