Yellow-Margined Water Scavenger Beetle vs Colorado Leaf Beetle

Side-by-side species comparison

Attribute Yellow-Margined Water Scavenger Beetle Colorado Leaf Beetle
Scientific Name Hydrochara caraboides Leptinotarsa juncta
Order Coleoptera Coleoptera
Family Hydrophilidae Chrysomelidae
Size 14-18 mm 8-11 mm
Habitat Ponds & Lakes Deserts & Drylands
Diet Scavengers Herbivores
Regions Europe, Western Asia Southeastern United States
Conservation Near Threatened Least Concern

Yellow-Margined Water Scavenger Beetle

A large dark water scavenger beetle with yellowish margins on the pronotum. It inhabits well-vegetated ponds and is declining in parts of northern Europe.

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Did You Know?

Larvae are fierce predators that dispatch prey much larger than themselves, including tadpoles.

Colorado Leaf Beetle

A close relative of the Colorado potato beetle with similar striped elytra but alternating dark and light brown stripes rather than black and yellow. It feeds on native horsenettle.

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Did You Know?

Unlike its notorious relative the Colorado potato beetle, this species has not adapted to crop plants and remains relatively harmless to agriculture.