Rhogogaster chlorosoma is a species of sawflies in the family Tenthredinidae.

Like other sawflies, this species lack the slender "wasp-waist" between the thorax and abdomen.

Similar species are Rhogogaster viridis, that shows evident black marks on the upper surface of the abdomen and Rhogogaster punctulata, bearing black dots along the sides of the abdominal segments.

They mainly feed on pollen and nectar of Heracleum sphondylium as well as small insects.

The nocturnal larvae are polyphagous, feeding on the leaves of a variety of woody and herbaceous plants, mainly Sorbus, Quercus robur, Salix, Corylus avellana, Stellaria, Filipendula ulmaria, Alnus glutinosa, Rubus and Populus.