Insects Confused With Lygus
Don’t confuse lygus with other insects in the cotton field. Use this photo identification guide to differentiate
among several different hemipterans (true bugs).
Each name links to more information on identification and management.
Click on photos to enlarge
Identification tip: Lygus bug adults are about 0.25 inch (6 mm) long, 0.1 inch (2.5 mm) wide, and flattened
on the back. They vary in color from pale green to yellowish brown with reddish brown to black markings and
conspicuous triangle in the center of the back. Nymphs resemble adults, but are uniformly pale green with red-tipped
Identification tip: Bigeyed bug adults and nymphs are oval,
somewhat flattened, about 1/4 inch (4 mm) long, usually brownish or
yellowish, and have a wide head with prominent bulging eyes. Bigeyed
bugs can be confused with other hemipterans in the same family (Lygaeidae),
as well as insects in the Miridae family.
Identification tip: Adult Calocoris can be distinguished from lygus
bugs by the presence of two black dots on the back, just behind the head. Calocoris nymphs
do not have red-tipped antennae and black spots on the back as lygus nymphs do. Calocoris nymphs
tend to be longer and narrower than lygus nymphs and have fine black hairs on
Identification tip: Cotton aphid is highly variable in body
size and color, and adults may be winged or wingless. Nymphs and adults
of wingless cotton aphids vary in color from yellow to green to nearly
black. Nymphs that are developing into winged adults look very different
from the nymphs developing into wingless adults: they bear small welts
or protuberances on their bodies and may be covered with a coat of
dusty-like whitish wax. Their body color is often greenish blue, or
amber and blue.
Say stink bug
Identification tip: The stink bug adult is shield-shaped with
the posterior angles of the pronotum extended to prominent points.
They are about 0.5 inch (12 mm) long, and more than half as wide as
they are long. Color varies from green to dark brown.