Page 121 - ORNAMENTALES DEL TRÓPICO

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identiFication and management oF ornamental Pests

c. Distorted leaves, branches, or trunks

Leaf cupping (leaves folded, cupped or distorted) – aphids, psyllids

Leaf or twig galls (galls can be high variable in the appearance) –gall wasps and flies

Bark rippling or cracking – moth and beetle borers

d. Dieback of shoots, twigs, branches

Shoot dieback –tip moths

Branch dieback –wood-boring beetles and moths, twig girdlers, root feeding beetle larvae, scales

e. Products of insects

Honeydew and sooty mold (sticky, sugary substance excreted by certain insect; sooty mold grows

on honeydew) –aphids, soft scales, leafhoppers, treehoppers, whiteflies, psyllids, mealybugs

Fecal spots –lacebugs, thrips, some plant bugs and leaf beetles

Webbing –tent caterpillars, webworms, spider mites

Protective coverings –bagworms, case bearers

Fluffy white wax –adelgids, mealybugs, some aphids, some scale insects, some planthoppers

Soft or hard white, brown, gray to black wax covers –armored scales

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