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In this process, the rose sawfly emits a chemical secretion which forces the leaf to curl. The roseslug sawfly is one of three common sawflies that attack roses (others are curled and bristly roseslugs). Some leave holes or notches in the leaves, while others skeletonize the leaves by completely devouring the tissue between the veins. Mature larvae look like caterpillars, but they are not. The curled rose sawfly larva is pale green with white spots with the lower or ventral half being creamy white. Systemic insecticide such as Provado Ultimate Bug Killer will normally work, but it will have to be applied at an early stage to be really effective. Species; Additional images; Click here to support NatureSpot by making a donation - small or large - your gift is very much appreciated. I haven't encountered this species before, but a little research on the net tells me they are probably Curled Rose Sawfly Allantus cinctus (Tenthrèdes du rosier) larvae, which means they are not caterpillars at all, but … When to Spray Roses With Spinosad for Sawfly. Thank you. Sawfly larvae damage on a rose bud. Roses (Rosa spp.) The three species are all similar in color (light green), but are easily distinguished: bristly roseslug sawflies have bristle-like hairs covering the body, and curled roseslug sawflies curl … Description. Three species commonly appear on rose plants: the rose slug (Endelomyia aethiops), the curled rose slug sawfly (Allantus cinctus) and the bristly rose slug (Cladius difformis). It is native and common in Europe and Asia. When at rest, it curls up, hence the name. Adults of all three species resemble wasps and are about 1/4" long. It was imported into North America and now occurs from the northeast and Midwest and in the west coast states. Gently teasing back the calyces will reveal the larvae and allow you to give them a good squishing. Curled rose sawfly is a black, wasp-like, small to medium-sized, common sawfly. Curled Rose Sawfly Curled Rose Sawfly - Allantus cinctus. Yesterday morning when I went out to the boulangerie I noticed some cute little caterpillars, curled up asleep after a hard night's chomping on one of my rose bushes. Of the three, the curled rose sawfly is the most damaging. This species has a black head and thorax. As a larvae it is an agricultural pest of roses and strawberries. The abdomen is also black but has a thick pale coloured band across it. It matures at 3/4" and along with devouring foliage, bores into pruned twigs. You can see a green sawfly slug on a leaf on the lower right hand side of the photo under the bloom. A third species, the curled roseslug sawfly (Allantus cinctus) generally produces two generations per year. Q. Rosie defoliators - Roseslug sawfly, Endelomyia aethiops, and Curled rose sawfly, Allantus cinctus June 13, 2011 On a recent visit to one of my favorite gardens, while enjoying the fragrances and beauty of roses, I noticed some unnerving injury, skeletonization and defoliation, on the leaves of several plants. The other two are the bristly roseslug (Cladius difformis), which produces five to six generations per year, and the curled rose sawfly (Allantus cinctus), which is the largest of the three and is a leaf skeletonizer as well as a cane borer producing only two generations per year (Johnson et al, 1989; Cranshaw, 2004). Conifer sawflies, for instance, are found in coniferous trees, such as pine and spruce. Length 6 - 9 mm. They are about 1/2" long and yellow-green with yellow heads. Contact insecticides are not normally effective, for the do not easily penetrate the damage rose leaves. ) generally produces two generations per year it curls up, hence the name the.! 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