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Climbing Night-shade as a Host of the Pear Psylla (Homoptera: Psyllidae)1

Published online by Cambridge University Press:  31 May 2012

Walter H. A. Wilde
Walter H. A. Wilde
Affiliation:
Zoology Department, University of Guelph, Guelph, Ontario
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Extract

In Ontario, pear has been the only recorded host of the pear psylla, Psylla pyricola Foerster (Goble 1963), although in other areas of the world Quince, Downy Chess Grass, and apple twigs have also been reported (Smith 1941; Swirski 1954; and Wilde 1963).

Numbers of pear psylla adults were observed on climbing night-shade, Solanum dulcamara L. (Muenscher 1955) growing as cover crop in a pear orchard near Paris, Ontario, in 1965. Regular observation of psylla occurrence on this plant host throughout the growing season indicated that P. pyricola Foer. could complete its life cycle on S. dulcamara; eggs and nymphal stages up to the hard-shell stage, as well as cast nymphal skins, were observed on this host. Egg mortality was noted on those portions of S. dulcamara that were damaged showed severe wilting characteristics. Egg and second-instar nymph on the undersurface of the leaf of S. dulcamara are illustrated in Figs. 1 and 2.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 5 , May 1966 , pp. 558 - 559
Copyright
Copyright © Entomological Society of Canada 1966

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References

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