Aphids are small insects that crawl on the stems, leaves, and roots of a plant. They feed on the plant’s sap by piercing through the branches and leaves using their sharp mouthparts. Failure to get ...

There are three major types of diseases that affect blue spruce trees: needlecasts, tip blights, and canker diseases. The two ...

and black, milkweed aphids are always bright yellow or orange with black legs and black spikes, or “cornicles,” on their ...

The Florida Entomologist, Vol. 82, No. 3 (Sep., 1999), pp. 424-447 (24 pages) Populations of the brown citrus aphid (BCA), Toxoptera citricida (Kirkaldy), and associated insects were monitored in ...