There are multiple metric units to choose from! This tutorial goes through the process of choosing the best metric unit to use for measuring the mass of a given object.
The most common aphids on houseplants are the light green ones (pear aphids), but aphids can also be found colored pink, white, grey and black. Additionally, winged aphids can appear when colonies are established and fly to infect new plants. Juvenile aphids (nymphs) look like smaller versions of the adults.
Identification. Aphids are tiny insects with long, slender mouth parts used to pierce stems and leaves of plants to suck out the plantâs fluids. Aphids range in size from 1/16 to 1/8 inch long. These insects can be almost any color, including green, black, brown, red or pink.