California Red Scale vs Helmeted Squash Bug

Side-by-side species comparison

Attribute California Red Scale Helmeted Squash Bug
Scientific Name Aonidiella aurantii Euthochtha galeator
Order Hemiptera Hemiptera
Family Diaspididae Coreidae
Size 1.5-2 mm diameter 14-18 mm
Habitat Orchards Heathland
Diet Herbivores Sap Feeders
Regions Worldwide citrus-growing regions North America
Conservation Not Evaluated Least Concern

California Red Scale

A circular reddish-brown armored scale insect that infests citrus bark, leaves, and fruit. Heavy infestations can kill branches and render fruit unmarketable.

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Did You Know?

The parasitoid wasp Aphytis melinus is mass-reared by the billions to control this scale in California citrus orchards.

Helmeted Squash Bug

A North American coreid with an expanded helmet-like pronotum. It feeds on various plants but is not as destructive as the common squash bug.

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Did You Know?

Its expanded pronotal 'helmet' makes it look significantly larger from the front, potentially deterring predators.