Locust Borer vs Chinese Rose Beetle

Side-by-side species comparison

Attribute Locust Borer Chinese Rose Beetle
Scientific Name Megacyllene robiniae Adoretus sinicus
Order Coleoptera Coleoptera
Family Cerambycidae Scarabaeidae
Size 14-22 mm 8-12 mm
Habitat Farmland Farmland
Diet Pollen Feeders Herbivores
Regions Eastern and Central North America East Asia, Hawaii, Pacific Islands
Conservation Least Concern Not Evaluated

Locust Borer

A striking yellow-and-black wasp mimic that attacks black locust trees in North America. Adults appear in autumn and are commonly found on goldenrod flowers. Larval boring weakens locust trunks and can cause breakage.

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Did You Know?

Adults synchronize their emergence with goldenrod bloom, making autumn fields their primary mating arenas.

Chinese Rose Beetle

A small nocturnal scarab that is a major agricultural pest in Hawaii. It skeletonizes the leaves of over 250 host plant species.

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Did You Know?

It was accidentally introduced to Hawaii around 1891 and has since become one of the islands' most destructive beetle pests.