Observations on the Feeding Habits of the Potato Psyllid (Paratrioza Cockerelli Sulc.) and the Pathological History of the "Psyllid Yellows" Which it Produces

1 August 1933

journal article
research article
Published by Oxford University Press (OUP) in Journal of Economic Entomology

Vol. 26 (4) , 846-850
https://doi.org/10.1093/jee/26.4.846

Abstract

Studies of histological sections of Paratrioza Cockerelli in feeding position on potato foliage show the setal sheath penetrating the mesophyll into the border parenchyma immediately surrounding the vascular bundles. The majority of feeding seems to occur in this region. Further examinations of diseased leaves and stems reveal abnormally large deposits of chromoplastids, probably starch granules, in the chlorenchyma of the leaf and in the cortex and pith of the stem.

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