Where does the black margined aphid (M. caryella) primarily feed on pecan leaves?

Answer

Targeting the major leaflet veins

When dealing with the Yellow Aphid Complex found in pecan production systems, different species exhibit subtle yet significant differences in their feeding locations on the leaf structure, guiding management decisions. The black margined aphid, identified as *Monellia caryella*, specializes in targeting and feeding upon the sap located within the major leaflet veins of the pecan leaf. This contrasts with the other primary pest in the complex, the yellow pecan aphid (*Monelliopsis pecanis*), which feeds on the fine network of veins distributed throughout the entire leaf lamina. This targeted feeding habit on specific veins by *M. caryella* indicates a high reliance on the immediate vascular pathways within the leaf tissue.

Where does the black margined aphid (M. caryella) primarily feed on pecan leaves?
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