Mean difference in egg consumption.

<p>Each bar represents mean (+SEM) difference in consumption per predator (<i>C</i>. <i>novemnotata</i> eggs—<i>C</i>. <i>septempunctata</i> eggs) for a single treatment combination across two factors, predator (C9 = <i>C</i>. <i>novemnotata</i>, C7 = <i>C</i>. <i>septempunctata</i>), and aphid density (0 or 20 pea aphids). A value of 0 represents no difference in consumption of the eggs of the two species. Columns with the same letter are not significantly different (<i>p</i> > 0.05).