BALSAM WOOLLY APHID, ADELGES PICEAE (HOMOPTERA: PHYLLOXERIDAE), SEASONAL AND SPATIAL DEVELOPMENT IN CROWNS OF BALSAM FIR, ABIES BALSAMEA

• Published in: The Canadian Entomologist
• Main Author: Bryant, D. G.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1971
• Subjects: Insect Science; Molecular Biology; Physiology; Ecology, Evolution, Behavior and Systematics; Structural Biology; Needles The; Newfoundland
• Online Access: http://dx.doi.org/10.4039/ent1031411-10; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00047982

Abstract The balsam woolly aphid, Adelges piceae (Ratz.), in Newfoundland is dimorphic and has three generations a year in the crowns of balsam fir trees. Two generations of the sistens, or diapausing form, predominate. Progredientes are more common than elsewhere in North America and occur on nearl...