Larval collections and rearings have been made of the European species of the sawfly genera Metallus, Monostegia, and Phymatocera. The biology of Metallus albipes, a leaf-miner specialized on raspberries, is described in some detail. M. pumilus has been reared mainly from dewberries (Rubus caesius), less often from rock bramble (R. saxatilis), but has rarely been found on blackberries (R. fruticosus agg.). M. lanceolatus, mining the leaves of wood avens (Geum urbanum), is also briefly dealt with. The larvae of these leaf-miners are described and a total of 11 species of parasitoids have been reared from them, including 3 highly specific Ichneumonid species of the genera Lathrolestes and Grypocentrus. Monostegia nigra, an entirely black sawfly species separated from M. abdominalis by TAEGER (1987), has been reared from Lysimachia punctata in gardens. In contrast to M. abdominalis, frequently reared also from L. vulgaris (yellow loosestrife), M. nigra lays several eggs dispersed over a leaf (not in an oblong cluster) and the head capsule of the larvae is uniformly yellowish (not with a dark stripe on the vertex). The life-cycle of both species is similar, apparently with 2 partial generations per year. Phymatocera aterrima has been collected mostly from solomon's seal (Polygonatum multiflorum). A brief description is given of its oviposition and feeding activity which is characterized by a high consumption rate and assimilation efficiency and thus by a fast larval development. Nutrition; Reproduction; Reproductive behaviour; Life cycle and development; Parasites diseases and disorders; Parasites; Insect parasites; Hosts Metallus albipes; Metallus lanceolatus; Metallus pumilus (Tenthredinidae ); Life cycle and development; Rearing data; Insect parasites; Hymenopteran parasites; Plant hosts Monostegia abdominalis; Monostegia nigra (Tenthredinidae ); Egg laying; Life cycle and development; Rearing data; Plant hosts Phymatocera aterrima (Tenthredinidae); Feeding behaviour; Egg laying; Life cycle and development; Rearing data; Plant hosts none no species