Nigel Cattlin / Large rose sawfly (Arge pagana) larvae feeding on ornamental rose leaves in summer, Berkshire, September

Nigel Cattlin / Large rose sawfly (Arge pagana) larva feeding on damaged Rose (Rosa sp) leaf. Cultivated in garden, Berkshire, England, UK. July.

Nigel Cattlin / Large rose sawfly (Arge pagana) larvae feeding on ornamental rose leaves in summer, Berkshire, September

Nigel Cattlin / Large rose sawfly (Arge pagana) larvae feeding on ornamental rose leaves in summer, Berkshire, September

Nick Upton / Large rose sawfly (Arge pagana) preparing to lay eggs on a Rose bush in a garden, Wiltshire, UK, July.

Kim Taylor / Rose sawfly (Arge ochropus) female cutting a groove in a rose stem in which to lay her eggs. Surrey, England, UK, June.

Doug Wechsler / Sawfly eggs (Argidae) on underside of hickory leaf, Fort Washington State Park, Philadelphia, Pennsylavania, USA. August.

Steve Downer / Panning shot of a Large rose sawfly larva (Arge pagana) feeding on a rose leaf, Birmingham, England, UK, July.

Steve Downer / Large rose sawfly larva (Arge pagana) feeding on a rose leaf, Birmingham, England, UK, July.

Kim Taylor / Rose sawfly (Arge ochropus) larvae on rose leaf, Surrey, England, August.

Rod Williams / Large Rose sawfly caterpillar (Arge pagana) feeding on rose bush, Brockley, Lewisham, London UK August

Rod Williams / Large rose sawflies (Arge pagana) mating pair, Lewisham, London, England, UK. June