Delta Flower Scarab

Trigonopeltastes delta

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Delta flower scarab clinging to flower
The delta flower scarab (Trigonopeltastes delta) got its name from the bright yellow triangle on its pronotum (“delta” is the Greek letter that’s a triangle). The yellow pattern might help protect it, since the beetle resembles a stinging wasp.
Donna Brunet
Other Common Name
D Beetle
Family

Scarabaeidae (scarab beetles) in the order Coleoptera (beetles)

Description

The delta flower scarab got its name from the bright yellow triangle on its pronotum (“delta” is the Greek letter that’s a triangle). The yellow pattern might help protect it, since the beetle resembles a stinging wasp.

Learn more about this and other scarab beetles on their group page.

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Pair of delta flower scarabs mating on rattlesnake master flowerhead
Delta Flower Scarabs Mating on Rattlesnake Master
Delta flower scarabs are usually seen visiting flowers in prairies and other open areas. They usually mate while visiting flowers.
Foods

Delta flower scarab adults eat pollen, nectar, and/or other parts plants in the carrot, daisy, and mint families, including goldenrod, coneflower, rattlesnake master, and Queen Anne’s lace. The larvae live in rotting wood.