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Sunburst Diving Beetle

Sunburst Diving Beetle

Animal's Behavior

When swimming, this species and other member of the family (predaceous diving beetles) kick their hind legs simultaneously

Eating Habits

They require at least a temporary water source. If the one they inhabited dries up, these diving beetles will fly until another water source is located. These beetles feed on other aquatic invertebrates including mosquito larvae and pupae.


Ponds and lakes from California to Texas

Animal Facts

  • Their black bodies are covered with bright yellow spots that make them look like a miniature turtle.
  • They are powerful swimmers, and are able to stay under water for extended periods of time because they collect an air bubble under their wings that can be seen at the tip of their abdomen when they dive.

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Quick Facts

Scientific Name

Thermonectus marmoratus


Animalia, Arthropoda, Insecta, Coleoptera, Dytiscidae, Thermonectus, T. marmoratus

Place of Birth

Extreme Southern California, Arizona, New Mexico, Texas, and Mexico


0.5 inches


Black forewings covered with yellow spots


2 years

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