When Studying the Effects of Light on Herbivory, Should One Consider Temperature? The Case of Epimecis Hortaria F. (Lepidoptera: Geometridae) Feeding on Lindera Benzoin L. (Lauraceae)

Light and temperature are ecological factors that are known to influence leaf quality and herbivory. Because temperature is likely to vary with light environment, the effects that each factor has on herbivore performance and seasonal herbivory rates are likely to be confounded. We studied how light and thermal environment influenced consumption and conversion of Lindera benzoin L. (Lauraceae) leaf material by Epimecis hortaria F. (Lepidoptera: Geometridae) in field and laboratory settings. Ambient and leaf surface temperatures were higher in the sun than in the shade. Experimental enclosures increased feeding temperatures by