The redheaded pine sawfly is particularly damaging to young pine plantations. Eggs hatch in 4 to 5 weeks. In Canada and the northern United States, jack pine (Pinus banksiana), and red pine (Pinus resinosa) are the preferred food sources for redheaded pine sawfly larvae. [ Contents ]     United States Department of Agriculture Forest Service. The redheaded pine sawfly is native to the United States and found primarily east of the Great Plains (Wilson 1978), north into Canada, and south into Florida. Needles that have eggs laid in them look spotted or banded with alternating green and yellow patches. Waterbury, VT: Department of Forests, Parks and Recreation. Young red pine plantations, less than 4–5 metres tall, are preferred hosts. Lateral view of adult redheaded pine sawfly, Neodiprion lecontei (Fitch). Sawflies look like flies as adults and like caterpillars as larvae but they are neither flies nor moths and butterflies. The redheaded pine sawfly feeds on the needles, causing defoliation of the tree, which can lead to reduced growth and performance, stem deformity and mortality in small trees. Redheaded Pine Sawfly, Neodiprion lecontei, Sawfly damage                                 Adult of redheaded pine sawfly, Egg scars from sawfly on needles       Sawfly cocoons, Defoliation of mugo pine by sawflies    Newly hatched sawfly larvae. Phone: 613-713-1525Email:, 10 Campus Dr., Unit 4 Kemptville, Ontario K0G 1J0. As larvae mature, they become yellow to green with brown heads. When foliage becomes scarce, larvae will even feed on the soft bark tissue of defoliated trees (Hyche 1999). Red pine defoliated by Redheaded pine sawfly larvae. Photograph by James McGraw, North Carolina State University, document.getElementById('cloak6d0a3f29612a0731049cb3dcf43d913c').innerHTML = ''; Cornell University Press. Depending on the severity of the attack, the consequences of defoliation may range from growth reduction to the mortality of affected trees. The redheaded pine sawfly, Neodiprion lecontei (Fitch), is one of numerous sawfly species (including 35 species in the genus Neodiprion) native to the United States and Canada (Arnett 2000) inhabiting mainly pine stands. Hanson, T., and E. B. Walker. Alternatively, if the numbers of larvae are few, they can be picked off the branches by hand and destroyed. Oviposited eggs are evident by small discolored patches in a row on the needle. It seems that you have already subscribed to this list. Redheaded pine sawfly larvae are gregarious feeders, capable of completely stripping small pine trees of foliage. In Florida, the preferred food sources for redheaded pine sawfly include: shortleaf pine (Pinus echinata), loblolly pine (Pinus taeda), longleaf pine (Pinus palustris), slash pine (Pinus elliottii), Virginia pine (Pinus virginiana), and scotch pine (Pinus sylvestris). 1978. 1973. The type of control method you use may also depend on the type of outbreak and your available resources. north of Florida, but these trees are also considered a non-preferred food source for the redheaded pine sawfly (Shetlar 2000). Eggs of the redheaded pine sawfly, Neodiprion lecontei (Fitch), in pine needle. It usually feeds on young trees, preferably 0.3 to 4.6 m tall. commitment to diversity. The mature larvae are yellow to yellow-green in color and have four to eight rows of black spots lengthwise along the body. 257-258. Cultural/Mechanical Control. Sawflies and leafcutting bees. Feeding is primarily restricted to the two and three-needled pines, such as Jack, red, shortleaf, loblolly, slash, longleaf, and pitch pines. These monoculture conditions can encourage an outbreak of redheaded pine sawfly. Numerous sawfly species are found in North America. Photograph by Albert Mayfield, Florida Department of Agriculture and Consumer Services, U.S. Department of Agriculture, Cooperative Extension Service, University of Florida, IFAS, Florida A&M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. However, they are not, they are the Redheaded pine sawfly (Neodiprion lecontei). The sawfly is natural to our area and its population is cyclical in nature. Mature larvae are approximately 2.5 cm (1 in) long, and have a red to reddish-orange head. These trees tend to be even more susceptible if they are already stressed due to environmental factors, such as drought. Prepupae overwinter in cocoons and, once adults emerge, the cocoons are left behind with a large circular hole in one end. Red pine defoliated by Redheaded pine sawfly larvae. Natural enemies are numerous (58 different species are recorded) and disease, viruses, and predators regularly control populations of redheaded pine sawfly (Van Driesche 1996). After pupating the adult sawfly emerges from the cocoon. Within a few weeks small, fly-like adults emerge and mate. Large female cocoons on the left, smaller male cocoons on the right.


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