True bugs
True bugs usually have thickened forewings with membranous tips. When they rest, the dissimilar parts of their
folded wings overlap. Most true bugs can be recognized by the characteristic triangle or X-shape on the
back formed by their folded wings. True bugs have sucking mouthparts, which on plant-feeding species point
downward, perpendicular to the plane of the insect's body. Common true bugs are lace
bugs (tingids), boxelder
bugs, ash
plant bugs, lygus bugs, stink
bugs, and chinch and false chinch
bugs.
Life cycle
Damage
True bugs suck juices from leaves, fruit, or nuts, forming a pale stippling around feeding sites and distorting
tissue. Varnishlike spots of excrement often dot leaves. Bugs do not seriously harm woody plants; however,
activities of some species can be undesirable. Lace bugs may cause heavy damage, which may be confused with
that of greenhouse thrips.
Solutions
Most true bugs do not cause serious harm to established plants. Provide proper cultural care so plants are
vigorous. Provide adequate irrigation. Avoid growing shade-adapted species in full sunlight. Damaged foliage
can be pruned out. Consider replacing especially susceptible plants with resistant species. Spraying for bugs
is generally not recommended, although oils or soaps may be used with good coverage. Parasites and general
predators may contribute to control.
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Brown adult and green nymphs of the Pacific ash plant bug
Bleached foliage caused by lace bugs
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