Partial life tables were prepared for the red pine shoot moth,Dioryctria resinosellaMutuura, in three red-pine,Pinus resinosaAiton, plantations in central Wisconsin during a period of shoot-moth population decline. Survivorship in the early instars ranged from 72–78% in 1982 and from 22–75% in 1983. In the fifth instar, survivorship ranged from 0–4% in 1982 and 0–31% in 1983. Pupal numbers were very low both years and survivorship was variable; it ranged from 0–100%.Phrynofrontinasp.,Exeristes comstockii(Cresson),Bracon rhyacioniae(Muesebeck),Hyssopus rhyacioniae(Gahan), andElachertussp. were parasitoids present in high numbers.B. rhyacioniaecaused the greatest impact on shoot-moth populations, particularly in the fifth instar. Heavy fifth-instar mortality appeared related to shoot-moth population declines. However, mortality in other life stages not included in the partial life tables, such as dispersing early instar larvae, possibly were involved.