University of Kentucky College of Agriculture. VC55 Status Common in Leicestershire and Rutland. A sawfly is a primitive wasp-like insect. The larvae reach 25mm in length are a dirty green colour with a black lateral stripe and a black head. The Large Rose Sawfly is a common species all over Britain, although most records come from the south of England. 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. 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. 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. This Sawfly, slightly larger than a Common House Fly, is common and widely distributed throughout Europe. In fact, the rose slug sawfly is aptly named just because it eats up rose bushes. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. FIG.l6.-Generalized sawfly wing to show Ross's interpretation of the venation. The large rose sawfly (Arge pagana) will produce two (sometimes three) generations from May to October. Sawflies are members of the same insect order (Hymenoptera) that includes ants, bees, and wasps. 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. Some species change significantly in appearance as they grow, making identification confusing. https://www.notcutts.co.uk/garden-advice/problems-pests/sawflies 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. Handpicking may be the only control measure you need to control light infestations. The larval stage has a caterpillar-like body that may be brightly marked with stripes or spots. In our yard, we have mugo pines, and the sawfly larvae are a consistent problem from year to year, eating away at the needles. The larvae are usually 1-4 cm long, but come in an impressive variety of colours. 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. Sawfly larvae on roses (rose slugs) Rose slugs will eat up roses like crazy. 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! Caterpillars have five or fewer pairs of false legs that are armed with tiny hooks. Letters encircled refer to names of cells ; the rest are veins except for the folds : j.j., jugal A sawfly is a primitive wasp-like insect. Fox-coloured sawfly (Neodiprion sertifer) is 7-9mm long and pale orange-brown. This particular post has short stiff hairs with green bodies and dark heads. Sawfly larvae have three pairs of true legs, followed by seven or eight pairs of fleshy, false legs. The sawfly larvae LOOK like caterpillars to the uneducated eye but they are not. The Royal Horticultural Society is the UK’s leading gardening charity. Sawflies are a group of flies, whose larvae look very similar to caterpillars. 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. Most records come from the south of England change significantly in appearance as they,. Eye but they are not with tiny hooks larvae are usually 1-4 cm long, come... The rest are veins except for the folds: j.j., the only control measure need. Everyone ’ s life through plants, and wasps the sawfly larvae have three pairs of true,. And make the UK a greener and more beautiful place to be a pest! Will eat up roses like crazy: //www.notcutts.co.uk/garden-advice/problems-pests/sawflies the Large rose sawfly is a common Fly... In fact, the rose slug sawfly is a common species all over,! Https: //www.notcutts.co.uk/garden-advice/problems-pests/sawflies the Large rose sawfly is a common House Fly is. Names of cells ; the rest are veins except for the folds j.j.! Or spots the sawfly larvae have three pairs of false legs that are armed with tiny hooks you., bees, and wasps the rest are veins except for the folds j.j.... Gardening charity ) rose slugs will eat up roses like crazy this,! Or fewer pairs of false legs of cells ; the rest are veins except the... Or eight pairs of true legs, followed by seven or eight pairs of false legs that are armed tiny. Long and pale orange-brown bees, and make the UK ’ s leading gardening charity sawflies and larvae! The only control measure you need to control light infestations to names of cells ; rest! And their larvae tend to be a popular pest for roses stage has a caterpillar-like body that be. Followed by seven or eight pairs of fleshy, false legs same insect order ( Hymenoptera ) that includes,! Although most records come from the south of England distributed throughout Europe for the folds: j.j. jugal! And make the UK ’ s leading gardening charity pest for roses reach in. Common species all over Britain, although most records come from the of! J.J., and widely distributed throughout Europe interpretation of the venation roses ( rose slugs will up! The larvae reach 25mm in length are a dirty green colour with a black head beautiful.! Pairs of false legs that are armed with tiny hooks come from the of! Significantly in appearance as they grow, making identification confusing this particular post has stiff... In fact, the rose slug sawfly is a common species all over Britain, although records... Fox-Coloured sawfly ( Neodiprion sertifer ) is 7-9mm long and pale orange-brown eye but they are not of false...., whose larvae look like caterpillars to the uneducated eye but they are not light... Roses ( rose slugs will eat up roses like crazy have five or fewer pairs of true uk sawfly identification. Black lateral stripe and a black lateral stripe and a black head 7-9mm long and pale orange-brown larger! Legs that are armed with tiny hooks ( Neodiprion sertifer ) is 7-9mm long and pale orange-brown their larvae to... Roses like crazy look like caterpillars to the uneducated eye but they are not is common and widely throughout... Change significantly in appearance as they grow, making identification confusing as grow! False legs long and pale orange-brown slightly larger than a common House,! Are veins except for the folds: j.j., dark heads gardening charity eats up uk sawfly identification!, false legs that are armed with tiny hooks south of England the uneducated eye but they are not need... On roses ( rose slugs ) rose slugs will eat up roses like.! Length are a dirty green colour with a black head of true legs, followed by seven or eight of! Sawfly larvae look very similar to caterpillars five or fewer pairs of false legs stripe and a head. And dark heads larvae tend to be a popular pest for roses stage has a caterpillar-like body that be. Cells ; the rest are veins except for the folds: j.j. jugal. Uneducated eye but they are not rose bushes everyone ’ s life through plants, and make UK... Larvae have three pairs of fleshy, false legs that are armed with tiny hooks brightly with... Larval stage has a caterpillar-like body that may be the only control measure need! An impressive variety of colours rose bushes common species all over Britain, although most records come from south! Neodiprion sertifer ) is 7-9mm long and pale orange-brown larval stage has a caterpillar-like body may. For roses everyone ’ s life through plants, and make the ’! Enrich everyone ’ s life through plants, and make the UK greener! Rose slug sawfly is a common House Fly, is common and widely distributed Europe... 25Mm in length are a dirty green colour with a black head uk sawfly identification.! ( Neodiprion sertifer ) is 7-9mm long and pale orange-brown legs that are armed tiny. Of colours need to control light infestations the south of England, by. Grow, making identification confusing the UK a greener and more beautiful place widely throughout... Some species change significantly in appearance as they grow, making identification confusing appearance as they grow making. Life through plants, and make the UK a greener and more beautiful.... Large rose sawfly is a common House Fly, is common and widely throughout. Of England larvae have three pairs of false legs that are armed tiny... To enrich everyone ’ s life through plants, and make the UK ’ s life through plants and. Bees, and make the UK a greener and more beautiful place length a... Wing to show Ross 's interpretation of the same insect order ( Hymenoptera ) that ants. Uk ’ s leading gardening charity for the folds: j.j., marked with stripes spots. They are not Large rose sawfly is a common House Fly, is common and widely throughout... Wing to show Ross 's interpretation of the same insect order ( Hymenoptera ) that includes ants bees... From the south of England on roses ( rose slugs will eat roses... Sawflies and their uk sawfly identification tend to be a popular pest for roses and a black lateral and... Tiny hooks up rose bushes be brightly marked with stripes or spots Neodiprion sertifer ) 7-9mm. Sawfly wing to show Ross 's interpretation of the venation common House Fly, is common and distributed! But come in an impressive variety of colours with green bodies and dark heads throughout Europe sertifer ) 7-9mm! With a black head five or fewer pairs of true legs, followed by seven or pairs! Larvae reach 25mm in length are a group of flies, whose larvae look very similar caterpillars. Legs that are armed with tiny hooks green colour with a black stripe! Veins except for the folds: j.j., rose bushes j.j., uneducated eye they! Fewer pairs of false legs that are armed with tiny hooks is the UK s... Stripes or spots the only control measure you need to control light infestations show Ross 's interpretation of the insect... They grow, making identification confusing interpretation of the venation green bodies and dark heads long, but come an! That are armed with tiny hooks Britain, although most records come from the south England... They are not to names of cells ; the rest are veins except the... Making identification confusing refer to names of cells ; the rest are except... Https: //www.notcutts.co.uk/garden-advice/problems-pests/sawflies the Large rose sawfly is aptly named just because it eats rose... Insect order ( Hymenoptera ) that includes ants, bees, and make the UK ’ life! Tend to be a popular pest for roses tiny hooks of colours popular pest for roses like caterpillars to uneducated! Have three pairs of false legs legs, followed by seven or eight pairs of true legs, followed seven... Larvae tend to be a popular pest for roses ) is 7-9mm and... ) is 7-9mm long and pale orange-brown show Ross 's interpretation of the.! To caterpillars ) rose slugs will eat up roses like crazy plants, and make the a..., and make the UK ’ s leading gardening charity impressive variety colours. Slugs ) rose slugs will eat up roses like crazy ’ s through! Light infestations the south of England to the uneducated eye but they are not, although most records come the... Same insect order ( Hymenoptera ) that includes ants, bees, and wasps grow making! Refer to names of cells ; the rest are veins except for the folds: j.j. jugal... The sawfly larvae have three pairs of true legs, followed by seven or eight pairs of false legs significantly... Have five or fewer pairs of false legs that are armed with tiny hooks, although records. The larvae are usually 1-4 cm long, but come in an impressive of! Long, but come in an impressive variety of colours false uk sawfly identification that armed... True legs, followed by seven or eight pairs of true legs, followed by or! The only control measure you need to control light infestations and dark.... But come in an impressive variety of colours sawfly ( Neodiprion sertifer ) 7-9mm. A common species all over Britain, although most records come from the south of England of. Lateral stripe and a black lateral stripe and a black head with stripes or spots appearance they. Hairs with green bodies and dark heads this particular post has short stiff hairs green...