Tenthredo olivacea is a sawfly species belonging to the family Tenthredinidae (common sawflies), subfamily Tenthredininae.[1]
Tenthredo olivacea can reach a length of about 8-. This sawfly has a green body and a green head, with dark green eyes. Head, thorax and abdomen have black markings. The dorsal surface of femur, tibia and tarsus shows a black line. Wings are hyaline with black veins. Though similar to Rhogogaster viridis, it has a thinner body. Moreover R. viridis shows black rings on tarsi.[2]
Adults can be found from May to August. They feed pollen, nectar, honeydew and small insect, while larvae feed on various herbaceous plants.[3]
This species can be found in most of Europe.[4]