Pear Psylla vs Spiny Oak Slug Moth

Side-by-side species comparison

Attribute Pear Psylla Spiny Oak Slug Moth
Scientific Name Cacopsylla pyri Euclea delphinii
Order Hemiptera Lepidoptera
Family Psyllidae Limacodidae
Size 2-3 mm 22-30 mm wingspan
Habitat Orchards Orchards
Diet Fruit Feeders Omnivores
Regions Europe, Western North America Eastern North America
Conservation Not Evaluated Least Concern

Pear Psylla

A small winged psyllid that is the most important insect pest of European pear orchards. Nymphs produce copious honeydew that causes fruit russeting and sooty mold.

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Did You Know?

It can inject a toxin while feeding that causes a condition called psylla shock, which can kill young pear trees.

Spiny Oak Slug Moth

A small colorful moth with green, brown, and silver-spotted forewings. Its flattened, jewel-like caterpillar is green with red and yellow markings and bears stinging spines.

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Did You Know?

The ornate caterpillar has been called one of the most beautiful in North America despite its painful sting.