Oulema cornuta
This record describes Oulema cornuta (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.
Identification and Appearance

Oulema cornuta is a species of leaf beetle in the family Chrysomelidae. It is found in North America.
Identification notes
femora red with apices and remainder of legs black
Wikipedia reference for Oulema cornuta: https://en.wikipedia.org/wiki/Oulema cornuta.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Chrysomeloidea
- Family
- Chrysomelidae (Leaf Beetles)
- Subfamily
- Criocerinae
- Tribe
- Lemini
- Genus
- Oulema
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
se. coastal states: TX-FL-MD - Map , e. to Bastrop
Diet and Behavior
Diet: Commelina, Tradescantia (Commelinaceae) ( 5 )
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Oulema cornuta. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Oulema cornuta (2)
Photo credits: (c) Britney Conney, some rights reserved (CC BY-NC), uploaded by Britney Conney | Contributed by Mike Quinn
Frequently Asked Questions About Oulema cornuta
What is Oulema cornuta?
Oulema cornuta is a species in the family Chrysomelidae, within the order Coleoptera.
How do you identify Oulema cornuta?
femora red with apices and remainder of legs black
Where is Oulema cornuta found?
Range: se. coastal states: TX-FL-MD - Map , e. to Bastrop
What does Oulema cornuta eat?
The diet of the Oulema cornuta includes Commelina, Tradescantia (Commelinaceae) ( 5 ).
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