Spruce budworm (Lepidoptera: Tortricidae) egg mass dimensions and corresponding egg complement on black spruce

Regression equations were constructed relating spruce budworm, Choristoneura fumiferana (Clemens), egg mass dimensions to number of eggs per egg mass on black spruce, Picea mariana (Miller) B.S.P., in northern Maine. Comparison of the results from the current study and from previously published studies suggest that the relationship between egg mass dimensions and number of eggs per egg mass is relatively constant over a broad range of conditions.