Ja. Bentz et Am. Townsend, Feeding injury, oviposition, and nymphal survivorship of the potato leafhopper on red maple and Freeman maple clones, ENV ENTOMOL, 28(3), 1999, pp. 456-460
Feeding injury, oviposition, and nymphal survivorship of the potato leafhop
per, Emponsca fabae (Harris), were measured among 5 red maple, Acer rubrum
L., clones and 2 Freeman maple, A. X freemanii E. Murray, cultivars. Sympto
ms of feeding injury among the 5 red maple clones varied in severity among
trees in the field. Red maple clone 56026 was the most susceptible, and red
maple clones 57775 and 55410 were the most tolerant. The Freeman cultivars
were most tolerant to feeding, with 'Jeffersred' showing no sign of insect
injury. Oviposition was significantly higher on the susceptible clone 5602
6, but significantly lower on Jeffersred than on the other clones. Fewer ny
mphs became adults when reared on 'Indian Summer' than when reared on the o
ther clones. Although the data showed that red maple is more susceptible to
feeding injury by the potato leafhopper than Freeman maple, no clear-cut r
elationship exists between susceptibility to feeding injury and host accept
ability for oviposition or host suitability for nymphal development. The di
fferences among the maple clones tested in this study suggest that red mapl
e and Freeman maple may have different mechanisms of resistance against the
potato leafhopper.