Averill, R.D.; Wilson, L.F.; Fowler, R.F. 1982. Impact of the redheaded pine sawfly (Hymenoptera: Diprionidae) on young red pine plantations. Great Lakes Entomologist. 15: 65-91.

Bartelt, R.J.; Jones, R.L. 1983. (Z)-10-nonadecenal: a pheromonally active air oxidation product of (Z,Z)-9,19 dienes in yellowheaded spruce sawfly. Journal of Chemical Ecology. 9: 1333-1341.

Bartelt, R.J.; Kulman, H.M.; Jones, R.L. 1981. Effects of temperature on diapausing cocoons of the yellowheaded spruce sawfly, Pikonema alaskensis. Annals of the Entomological Society of America. 74: 472-477.

Bartelt, R.J.; Jones, R.L.; Kulman, H.M. 1982a. Evidence for a multicomponent sex pheromone in the yellowheaded spruce sawfly. Journal of Chemical Ecology. 8: 83-94.

Bartelt, R.J.; Jones, R.L.; Kulman, H.M. 1982b. Hydrocarbon components of the yellowheaded spruce sawfly sex pheromone: a series of (Z,Z)-9,19 dienes. Journal of Chemical Ecology. 8: 95-114.

Bartelt, R.J.; Jones, R.L.; Krick, T.P. 1983. (Z)-5-tetradecen-1-ol: a secondary pheromone of the yellowheaded spruce sawfly, and its relationship to (Z)-10-nonadecenal. Journal of Chemical Ecology. 9: 1343-1352.

Bartelt, R.J.; Krick, T.P.; Jones, R.L. 1984. Cuticular hydrocarbons of the yellowheaded spruce sawfly, Pikonema alaskensis. Insect Biochemistry. 14: 209-213.

Blais, J.R. 1957. Some relationships of the spruce budworm, Choristoneura fumiferana (Clem.) to black spruce, Picea mariana (Moench) Voss. Forestry Chronicle. 33: 364-372.

Bradley, G.A. 1951. Notes on the parasitism of the yellow-headed spruce sawfly, Pikonema alaskensis (Roh.) (Hymenoptera: Tenthredinidae). Canadian Entomologist. 83: 130-131.

Cockfield, S.D. 1988. Relative availability of nitrogen in host plants of invertebrate herbivores: three possible nutritional and physiological definitions. Oecologia. 77: 91-94.

Connor, M.D.; Houseweart, M.W.; Kulman, H.M. 1982. Susceptibility of white spruce seed sources to yellowheaded spruce sawfly, Pikonema alaskensis, (Hymenoptera: Tenthredinidae). Great Lakes Entomologist. 15: 207-211.

Cook, J.L. 1976. Soil and site influences affecting the defoliation patterns of the yellowheaded spruce sawfly. St. Paul, MN: University of Minnesota. 64 p. M.S. thesis.

Cook, J.L.; Hastings, A.R. 1976. Yellowheaded spruce sawfly: some factors affecting infestation and defoliation of white spruce. Proj. Rep. S-6-76. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Area State and Private Forestry. 5 p.

Cook, J.L.; Houseweart, M.W.; Kulman, H.M.; Thompson, L.C. 1978. Foliar mineral differences related to sawfly defoliation of white spruce. Environmental Entomology. 7: 780-781.

Craighead, F.C. 1950. Insect enemies of eastern forests. Misc. Publ. 657. Washington, DC: U.S. Department of Agriculture. 679 p.

DeGroot, P. 1995. Yellowheaded spruce sawfly, Pikonema alaskensis. In: Armstrong, J.A.; Ives, W.G.H., eds. Forest insect pests in Canada. Ottawa, CA: Canadian Forest Service, Natural Resources Canada, Science and Sustainable Development Directorate: 241-244.

Drooz, A.T. 1960. The larch sawfly: its biology and control. Tech. Bull. 1212. Washington, DC: U.S. Department of Agriculture, Forest Service. 52 p.

Duda, E.J. 1953. The yellow-headed spruce sawfly in Maine. Amherst, MA: University of Massachusetts. 84 p. M.S. thesis.

Durzan, D.J.; Steward, F.C. 1967. The nitrogen metabolism of Picea glauca (Moench) voss and Pinus banksiana Lamb. as influenced by mineral nutrition. Canadian Journal of Botany. 45: 695-710.

Eller, F.J. 1982. Ethyl palmitoleate a sex pheromone of Syndipnus rubiginosus Walley, an ichneumonid parasitoid of the yellowheaded spruce sawfly. St. Paul, MN: University of Minnesota. 56 p. M.S. thesis.

Eller, F.J.; Bartelt, R.J.; Jones, R.L.; Kulman, H.M. 1984. Ethyl (Z)-9-hexadececenoate a sex pheromone of Syndipnus rubiginosus, a sawfly parasitoid. Journal of Chemical Ecology. 10: 291-300.

Eller, F.J.; Bartelt, R.J.; Kulman, H.M.; Jones, R.L. 1989. Interaction of prechill and chill durations on diapausing prepupal larvae of the yellowheaded spruce sawfly (Hymenoptera: Tenthridinidae) and associated parasitoids. Annals of the Entomological Society of America. 82: 361-367.

Forbes, R.S. 1949. Observations on the biology of the yellow headed spruce sawfly Pikonema alaskensis (Roh.) in the Maritime Provinces. Frederickton, New Brunswick: University of New Brunswick. 63 p. M.S. thesis.

Ford, R.P. 1979. Loss assessment of white spruce defoliated by yellowheaded spruce sawfly on the Black Duck Ranger District, Chippewa National Forest. Eval. Rep. NA-FB/M-3. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Area State and Private Forestry. 4 p.

Graham, S.A. 1925. Two dangerous defoliators of jack pine. Journal of Economic Entomology. 18: 337-345.

Haack, R.A.; Byler, J.W. 1993. Insects and pathogens regulators of forest ecosystems. Journal of Forestry. 91: 32-37.

Haack, R.A.; Mattson, W.J. 1993. Life history patterns of North American tree-feeding sawflies. In: Wagner, M.; Raffa, K., eds. Sawfly adaptations to woody plants. San Diego, CA: Academic Press: 503-545.

Hahn, J.D.; Wawryzynski, R.P.; Ascerno, M.E.; Katovich, S.A. 1992. Insecticide suggestions to control tree and shrub insects. Publ. AG-FO-0704-C. St. Paul, MN: University of Minnesota, Minnesota Extension Service. 11 p.

Harding, B.R. 1982. Site quality evaluation for white spruce plantations in northern Minnesota. St. Paul, MN: University of Minnesota. 135 p. Ph.D. dissertation.

Heimpel, A.M. 1961. Pathogenicity of Bacillus cereus Frankland and Frankland and Bacillus thuringiensis Berliner varieties for several species of sawfly larvae. Journal of Insect Pathology. 3: 271-273.

House, H.L. 1969. Effect of different proportions of nutrients on insects. Entomologia Experimentalis et Applicata. 12: 651-669.

Houseweart, M.W.; Kulman, H.M. 1976a. Life tables of the yellowheaded spruce sawfly, Pikonema alaskensis (Rohwer) (Hymenoptera: Tenthredinidae) in Minnesota. Environmental Entomology. 5: 859-867.

Houseweart, M.W.; Kulman, H.M. 1976b. Fecundity and parthenogenesis of the yellowheaded spruce sawfly, Pikonema alaskensis. Annals of the Entomological Society of America. 69: 748-750.

Houseweart, M.W.; VanDerwerker, G.K.; Weisberg, S.; Kulman, H.M. 1974. Use of regression on egg and first instar samples of the yellowheaded spruce sawfly, Pikonema alaskensis, on white spruce. Annals of the Entomological Society of America. 67: 887-890.

Houseweart, M.W.; Kulman, H.M.; Thompson, L.C.; Hansen, R.W. 1984. Parasitoids of two spruce sawflies in the genus Pikonema (Hymenoptera: Tenthredinidae). Res. Bull. 4. Orono, ME: University of Maine, Cooperative Forest Research Unit, Maine Agricultural Experiment Station. 33 p.

Ingestad, T. 1960. Studies on the nutrition of forest tree seedlings. III. Mineral nutrition of pine. Physiologia Plantarum. 13: 513-533.

Jakes, P.J. 1980. Minnesota forest statistics, 1977. Resour. Bull. NC-53. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 85 p.

Knerer, G.; Atwood, C.E. 1973. Diprionid sawflies: polymorphism and speciation. Science. 179: 1090-1099.

Kotar, J.; Kovach, J.A.; Locey, C.T. 1988. Field guide to habitat types in northern Wisconsin. Madison, WI: University of Wisconsin-Madison, Department of Forestry. 1-17-93.

Kramer, P.J.; Kozlowski, T.T. 1979. Physiology of woody plants. New York, NY: Academic Press. 811 p.

Kulman, H.M. 1971a. Effects of insect defoliation on growth and mortality of trees. Annual Review of Entomology. 16: 289-324.

Kulman, H.M. 1971b. Sawfly defoliation affects shoot growth of white sprucea preliminary report. For. Res. Note 233. St. Paul, MN: University of Minnesota, College of Forestry. 3 p.

Kusch, D.S.; Cerezeke, H.F. 1991. Yellow-headed spruce sawfly. For. Leafl. 7. Edmonton, Alberta: Forestry Canada, Northwest Region, Northern Forestry Center. 5 p.

Leatherberry, E.C. 1994a. Forest statistics for Michigan's Western Upper Peninsula Unit, 1993. Resour. Bull. NC-153. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 45 p.

Leatherberry, E.C. 1994b. Forest statistics for Michigan's Northern Lower Peninsula Unit, 1993. Resour. Bull. NC-157. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 48 p.

Lindquist, O.H.; Miller, W.J. 1971. A key to sawfly larvae feeding on the foliage of spruce and balsam fir in Ontario. Proceedings of the Entomological Society of Ontario. 102: 118-122.

Luhman, J.C. 1981. Descriptions of three new species of nearctic Ctenopelmatinae (Hymenoptera: Ichneumonidae). Great Lakes Entomologist. 14: 117-122.

Lyons, L.A. 1977. On the population dynamics of Neodiprion sawflies. In: Kulman, H.; Chiang, H., eds. Insect ecology. Tech. Bull. 310. St. Paul, MN: University of Minnesota Agricultural Experiment Station: 48-55.

Mattson, W.J.; Addy, N.D. 1975. Phytophagous insects as regulators of forest primary production. Science. 190: 515-522.

Mattson, W.J.; Scriber, J.M. 1987. Nutritional ecology of insect folivores of woody plants: nitrogen, water fiber and mineral considerations. In: Slansky, F.; Rodriquez, J.G., eds. Nutritional ecology of insects, mites and spiders. New York, NY: John Wiley: 105-146.

McCullough, D.G. 1994. Christmas trees and forestry report. Michigan State University Extension Crop Advisory Team Alert News letter. 9(11): 3.

McCullough, D.G.; Kulman, H.M. 1991. Effects of nitrogen fertilization on young jack pine (Pinus banksiana) and on its suitability as a host for jack pine budworm (Choristoneura pinus pinus) (Lepidoptera: Tortricidae). Canadian Journal of Forest Research. 21: 1447-1458.

McLeod, J.M. 1970. The epidemiology of the Swaine jack pine sawfly, Neodiprion swainei Middleton. Forestry Chronicle. 46: 126-133.

Miles, P.D.; Chen, M.C. 1992. Minnesota forest statistics, 1990. Resour. Bull. NC-141. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 130 p.

Minnesota Department of Natural Resources. 1981. 1981 forest insect and disease report. St. Paul, MN: Minnesota Department of Natural Resources, Division of Forestry. 53 p.

Minnesota Department of Natural Resources. 1992. Yellow-headed spruce sawfly. St. Paul, MN: Minnesota Department of Natural Resources, Division of Forestry. 2 p.

Minnesota Department of Natural Resources. 1994. Minnesota forest health; report 1993. St. Paul, MN: Minnesota Department of Natural Resources, Division of Forestry, Forest Health Unit: 18

Mitchener, A.V. 1931. The brown-headed spruce sawfly Pachynematus ocreatus (Harr.) Marlatt. Annual Report of the Entomological Society of Ontario. 62: 57-61.

Morris, L.A.; Pritchett, W.L.; Swindel, B.F. 1983. Displacement of nutrients into windrows during site preparation of a flatwood forest. Soil Science Society of America Journal. 47: 591-594.

Morse, B.W.; Kulman, H.M. 1984a. Plantation white spruce mortality: estimates based on aerial photography and analysis using a life-table format. Canadian Journal of Forest Research. 14: 195-200.

Morse, B.W.; Kulman, H.M. 1984b. Effects of white spruce release on subsequent defoliation by the yellowheaded spruce sawfly, Pikonema alaskensis (Hymenoptera: Tenthridinidae). Great Lakes Entomologist. 17: 235-237.

Morse, B.W.; Kulman, H.M. 1985. Monitoring damage by yellowheaded spruce sawflies with sawfly and parasitoid pheromones. Environmental Entomology. 14: 131-133.

Morse, B.W.; Kulman, H.M. 1986. A method of hazard-rating white spruce plantations for yellowheaded spruce sawfly defoliation. Northern Journal of Applied Forestry. 3: 104-105.

Morse, B.W.; Eller, F.J.; Kulman, H.M. 1984. Forecasting emergence of adult yellowheaded spruce sawflies (Hymenoptera: Tenthridinidae). Environmental Entomology. 13: 895-897.

Morton, S.S. 1948. A comparative study of the morphology of larval and adult stages of the closely related spruce sawflies: Pikonema alaskensis Roh. and Pikonema dimockii Cress. Toronto, Ontario: University of Toronto. 63 p. M.S. thesis.

Nash, R.W. 1939. The yellow-headed spruce sawfly in Maine. Journal of Economic Entomology. 32: 330-334.

Nienstaedt, H.; Teich, A. 1972. The genetics of white spruce. Res. Pap. WO-15. Washington, DC: U.S. Department of Agriculture, Forest Service. 24 p.

Ontario Ministry of Natural Resources. 1987. The forest resources of Ontario 1986. Inf. Rep. 86-08-14. Toronto, Ontario: Ontario Ministry of Natural Resources, Forestry Resources Group. 91 p.

Pauley, S.S.; Mohn, C.A. 1971. Selective defoliation by the yellow-headed spruce sawfly. For. Res. Note 229. St. Paul, MN: University of Minnesota, College of Forestry. 3 p.

Peterson, L.O.T. 1950. Control of the yellow-headed spruce sawfly in the agricultural areas of the prairie provinces. No. 120. Ottawa, Ontario: Canadian Department of Agriculture, Division of Entomology. 3 p.

Pointing, P.J. 1957. Studies on the comparative ecology of two sawflies Pikonema alaskensis Roh. and Pikonema dimmockii Cress. (Tenthredinidae, Hymenoptera). Toronto, Ontario: University of Toronto. 148 p. Ph.D. dissertation.

Popp, M.P. 1982. Effect of nitrogen fertilization on the yellowheaded spruce sawfly in white spruce plantations in northern Minnesota. St. Paul, MN: University of Minnesota. 106 p. M.S. thesis.

Popp, M.P.; Kulman, H.M.; White, E.H. 1986. The effect of nitrogen fertilization of white spruce (Picea glauca) on the yellow-headed spruce sawfly (Pikonema alaskensis). Canadian Journal of Forest Research. 16: 832-835.

Raile, G.K. 1985. Wisconsin forest statistics, 1983. Resour. Bull. NC-94. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 113 p.

Raile, G.K.; Smith, W.B. 1983. Michigan forest statistics, 1980. Resour. Bull. NC-67. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 101 p.

Raizenne, H. 1957. Forest sawflies of southern Ontario and their parasites. Publ. 1009. Ottawa, Ontario: Canadian Department of Agriculture. 45 p.

Rau, D.E. 1976. Parasites and local distribution of cocoons of the yellowheaded spruce sawfly. St. Paul, MN: University of Minnesota. 48 p. M.S. thesis.

Rau, D.E.; Houseweart, M.W.; Kulman, H.M. 1979. Distribution of cocoons of the yellowheaded spruce sawfly. Environmental Entomology. 8: 340-343.

Rauscher, H.M. 1984. Growth and yield of white spruce plantations in the Lake States (a literature review). Res. Pap. NC-253. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 46 p.

Rohwer, S.A. 1912. New sawflies in the collection of the United States National Museum. Proceedings U.S. National Museum. 41: 377-411.

Rose, A.H.; Lindquist, O.H. 1985. Insects of eastern spruces, fir, and hemlock. For. Tech. Rep. 23. Sault Ste. Marie, Ontario: Canadian Forest Service, Great Lakes Forest Research Centre. 159 p.

Ross, H.H. 1937. A generic classification of the nearctic sawflies (Hymenoptera, Symphyta). Illinois Biological Monographs. 15: 7-173.

Ross, H.H. 1938. The nearctic species of Pikonema, a genus of spruce sawflies (Hymenoptera, Tenthredinidae). Proceedings of the Entomological Society of Washington. 40: 17-20.

Schaffner, J.V. 1943. Sawflies injurious to conifers in the northeastern states. Journal of Forestry. 41: 580-588.

Schmidt, T.L. 1993. Forest statistics for Michigan's Eastern Upper Peninsula Unit, 1993. Resour. Bull. NC-150. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 46 p.

Schmidt, T.L. 1994. Forest statistics for Michigan's Southern Lower Peninsula Unit, 1993. Resour. Bull. NC-155. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 46 p.

Scriber, J.M.; Slansky, F. 1981. The nutritional ecology of immature insects. Annual Review of Entomology. 26: 183-211.

Schoenfelder, T.W.; Houseweart, M.W.; Thompson, L.C.; Kulman, H.M.; Martin, F.B. 1978. Insect and mammal predation of yellowheaded spruce sawfly cocoons (Hymenoptera: Tenthredinidae). Environmental Entomology. 7: 711-713.

Shenefelt, R.D.; Benjamin, D.M. 1955. Insects of Wisconsin forests. Circ. 500. Madison, WI: University of Wisconsin. 110 p.

Slobodkin, L.B. 1962. Growth and regulation of animal populations. New York, NY: Holt, Rinehart and Winston. 184 p.

Smirnoff, W.A.; Bernier, B. 1973. Increased mortality of the Swaine jack-pine sawfly and foliar nitrogen concentrations after urea fertilization. Canadian Journal of Forest Research. 3: 112-121.

Spencer, J.S., Jr.; Thorne, H.W. 1972. Wisconsin's 1968 timber resourcea perspective. Resour. Bull. NC-15. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station. 80 p.

Stiell, W.M. 1958. Pulpwood plantations in Ontario and Quebec. Index No. 1770 (F-2). Canadian Pulp and Paper Association, Woodlands Section. 42 p.

Sullivan, C.R.; Wallace, D.R. 1967. Interaction of temperature and photoperiod in the induction of prolonged diapause in Neodiprion sertifer. Canadian Entomologist. 99: 834-850.

Tauber, M.J.; Tauber C.A.; Masaki, S. 1986. Seasonal adaptations of insects. New York, NY: Oxford Univsity Press. 411 p.

Thompson, L.C.; Kulman, H.M. 1980. Parasites of the yellowheaded spruce sawfly, Pikonema alaskensis (Hymenoptera: Tenthredinidae), in Maine and Nova Scotia. Canadian Entomologist. 112: 25-29.

Turnock, W.J.; Melvin, J.C.E. 1963. The status of Bessa harveyi (Tnsd.) (Diptera: Tachinidae). Canadian Entomologist. 95: 646-654.

Valovage, W.D. 1979. Life table of Bessa harveyi (Diptera: Tachinidae), a parasite of the yellowheaded spruce sawfly, Pikonema alaskensis (Hymenoptera: Tenthredinidae). St. Paul, MN: University of Minnesota. 81 p. M.S. thesis.

Valovage, W.D.; Kulman, H.M. 1977. P. alaskensis control with dimilin on white spruce, 1976. Insecticide and Acaracide Tests. 2: 117.

Valovage, W.D.; Kulman, H.M. 1983. Egg production, oviposition sites, and adult longevity of Bessa harveyi (Diptera: Tachinidae), parasitizing yellowheaded spruce sawfly, Pikonema alaskensis (Hymenoptera: Tenthredinidae). Environmental Entomology. 12: 227-231.

Valovage, W.D.; Kulman, H.M. 1986. Life table of Bessa harveyi (Diptera: Tachinidae) parasitizing Pikonema alaskensis (Hymenoptera: Tenthredinidae). Environmental Entomology. 15: 246-250.

VanDerwerker, G.K.; Kulman, H.M. 1974. Stadium and sex determination of yellowheaded spruce sawfly larvae, Pikonema alaskensis. Annals of the Entomological Society of America. 67: 29-31.

VanDerwerker, G.K.; Cook, E.F.; Kulman, H.M. 1978. Morphology of the adult reproductive systems of the yellowheaded spruce sawfly, Pikonema alaskensis. Annals of the Entomological Society of America. 71: 615-618.