Studies on Aphididæ. I.*
Open Access
- 1 December 1908
- journal article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 1 (4) , 251-261
- https://doi.org/10.1093/aesa/1.4.251
Abstract
I first found this aphid at Urbana, Ill., November 16, 1907, common on the ornamental Russian olive tree (Elæagnus angustifolia). At that time only the sexual forms (wingless oviparous females and winged males) and the jet-black eggs were found, the latter being common on the branches, along and in the axils of the buds. A week later the same species was found on Shepherdia argentea.Keywords
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