Sawflies are members of the same insect order (Hymenoptera) that includes ants, bees, and wasps. Sawfly larvae on roses (rose slugs) Rose slugs will eat up roses like crazy. The sawfly larvae LOOK like caterpillars to the uneducated eye but they are not. In our yard, we have mugo pines, and the sawfly larvae are a consistent problem from year to year, eating away at the needles. University of Kentucky College of Agriculture. The following may help in the identification of a sawfly leaf miner, once the foodplant is determined and the mine and larva examined: They have different ways of feeding: Pseudodineurini feed with the dorsal side towards the upper side of the leaf and they are able to leave the leaf and make a new mine. The Royal Horticultural Society is the UK’s leading gardening charity. The Large Rose Sawfly is a common species all over Britain, although most records come from the south of England. The adult is carnivorous, feeding on the larvae of other insects, while its larvae is vegetarian, feeding on the leaves of a wide range of plants including, salix (on which these images were taken), alder, poplar, buttercups, etc. A sawfly is a primitive wasp-like insect. Adult pine sawfly (Diprion pini) are 10mm long brown winged insects, The larvae reach up to 25mm long and are pale green in colour with a brown head and black markings. Some species change significantly in appearance as they grow, making identification confusing. Sawfly larvae have three pairs of true legs, followed by seven or eight pairs of fleshy, false legs. FIG.l6.-Generalized sawfly wing to show Ross's interpretation of the venation. VC55 Status Common in Leicestershire and Rutland. In fact, the rose slug sawfly is aptly named just because it eats up rose bushes. We have tried spraying, and picking manually, but recently tried a vacuum cleaner, a shop-vac, with the creavace tool, and it sucked them all off from the branches with no problem! The larvae reach 25mm in length are a dirty green colour with a black lateral stripe and a black head. Caterpillars have five or fewer pairs of false legs that are armed with tiny hooks. One way to spot a sawfly larva is to count the legs - they also have six true legs, but usually have six or more pairs of the stumpy 'prologs', whereas caterpillars have five or fewer. Handpicking may be the only control measure you need to control light infestations. Sawflies are a group of flies, whose larvae look very similar to caterpillars. The large rose sawfly (Arge pagana) will produce two (sometimes three) generations from May to October. The females have a saw-like blade at the tip of the abdomen that is used to cut slits into plant tissue into which they deposit eggs. Tenthredo livida Sawfly This sawfly has white mouth and white tips to its antennae and variable in colour, sometimes all black, but other forms with red. The larvae are usually 1-4 cm long, but come in an impressive variety of colours. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. This particular post has short stiff hairs with green bodies and dark heads. https://www.notcutts.co.uk/garden-advice/problems-pests/sawflies The larval stage has a caterpillar-like body that may be brightly marked with stripes or spots. The white marked antennae together with the white and brown stigma in the forewing are distinctive and help with the identification… Sawflies and their larvae tend to be a popular pest for roses. This Sawfly, slightly larger than a Common House Fly, is common and widely distributed throughout Europe. 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