Western Cicada Killer vs Giant Black Water Beetle

Side-by-side species comparison

Attribute Western Cicada Killer Giant Black Water Beetle
Scientific Name Sphecius grandis Hydrophilus triangularis
Order Hymenoptera Coleoptera
Family Crabronidae Hydrophilidae
Size 30-55 mm 34-40 mm
Habitat Deserts & Drylands Ponds & Lakes
Diet Predators Predators
Regions Western United States from the Great Plains to the Pacific coast North America
Conservation Least Concern Least Concern

Western Cicada Killer

A massive solitary wasp of the American West that hunts cicadas to provision its underground burrows. It is slightly larger and paler than its eastern relative.

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Did You Know?

Despite its intimidating size, it is generally docile toward humans and males cannot sting at all.

Giant Black Water Beetle

The largest water beetle in North America, with a shiny black oval body. Larvae are voracious predators while adults are mainly plant feeders.

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Did You Know?

It carries a bubble of air beneath its body like a silvery film, which it replenishes at the surface.