Potato Psyllid Selection of Host Plants

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Abstract
Host-plant studies of Paratrioza cockerelli. started in Nebraska in 1939, have indicated that the adult psyllid selects certain plants of the nightshade family over others upon which to deposit eggs. Particular studies were made on 14 spp. during 1941-45, and the results are tabulated. There were significantly more eggs on Chinese lantern (Physalis francheti) and horse-nettle (Solanum carolinense) than on the other plants. On some 9 additional plants of the Solanaceae data were obtained for only 1 to 3 yrs. These data indicate that husk tomato (Physalis pruinosa), Nicandra physaloides, Nierembergia hippomanica, and jimsonweed (Datura stramonium) are also preferred over many of the commonly occurring plants, and particularly over potato and tomato. The extent to which these various host plants occur is discussed.

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