Western Yellowjacket vs Ironclad Beetle

Side-by-side species comparison

Attribute Western Yellowjacket Ironclad Beetle
Scientific Name Vespula pensylvanica Phloeodes diabolicus
Order Hymenoptera Coleoptera
Family Vespidae Zopheridae
Size 11-16 mm 15-25 mm
Habitat Woodlands Woodlands
Diet Carrion Feeders Wood Feeders
Regions Western North America from Alaska to Mexico North America
Conservation Least Concern Least Concern

Western Yellowjacket

The most common yellowjacket in western North America with a distinctive diamond-shaped black mark on its first abdominal segment. It is a frequent uninvited guest at outdoor picnics.

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Did You Know?

In Hawaii, where it was accidentally introduced, it has become a serious invasive pest threatening native insects.

Ironclad Beetle

Has one of the toughest exoskeletons of any insect — it can withstand forces 39,000 times its body weight. Even entomological pins bend when trying to pierce its shell.

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Did You Know?

This beetle is nearly indestructible — its exoskeleton can withstand being run over by a car. Engineers studied its shell design to develop stronger aircraft joints.