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

black spot on pronotum sometimes absent
Identification notes
black spot on pronotum sometimes absent
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
e. US (TX-FL-NJ-IN) - Map
Diet and Behavior
Diet: Asso. w Commelinaceae, incl. Commelina and Tradescantia ( 3 )
Additional species information
Species notes from the sources
Etymology: Oulema sayi (Crotch, 1873)
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Oulema sayi. 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 sayi (5)
Photo credits: Contributed by Mike Quinn; Additional contributions by v belov , PaleoJon
Frequently Asked Questions About Oulema sayi
What is Oulema sayi?
Oulema sayi is a species in the family Chrysomelidae, within the order Coleoptera.
How do you identify Oulema sayi?
black spot on pronotum sometimes absent
Where is Oulema sayi found?
Range: e. US (TX-FL-NJ-IN) - Map
What does Oulema sayi eat?
The diet of the Oulema sayi includes Asso. w Commelinaceae, incl. Commelina and Tradescantia ( 3 ).
FROM LOOKING IT UP TO GETTING TO KNOW IT
Make sense of the bugs at home.50 household bug profiles for you. Photos, coloring, and activities for curious kids.





