Northeastern Forest Experiment Station, Forest Service Research Note NE 255
Date Published: 1978
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- Jennings, Daniel T
Northeastern Forest Experiment Station - Houseweart, Mark W.
Abstract. Spruce budworm pupae can be sexed by the location and shape of the genital opening. The opening spans the 8th abdominal segment in female pupae and is found on the 9th segment in male pupae
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