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

Elytra uniformly medium brown, immaculate (emphasis added); larger, length 3.5–4.0 mm; punctation of elytral disc subseriate; median lobe long, broad throughout length, with deep angular apical incision. Since 1990, E.G. Riley has only found this sp. in TX in Bastrop St. Pk.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Chrysomeloidea
- Family
- Chrysomelidae (Leaf Beetles)
- Subfamily
- Eumolpinae
- Tribe
- Adoxini
- Genus
- Xanthonia
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
e. US: District of Columbia, Indiana, Kansas, Maryland, Missouri, Tennessee, and Virginia , plus Arkansas, Oklahoma and Texas (Bastrop Co.)
Seasonal Activity
April-June in TX
Diet and Behavior
Diet: oaks , including a series of 51 spmns coll'ed by EGR beating blackjack oak ( Quercus marilandica ) in Bastop Co., TX
Additional species information
Species notes from the sources
Etymology: Xanthonia angulata Staines and Weisman, 2001
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Xanthonia angulata. 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 Xanthonia angulata (5)
Photo credits: Contributed by Brad Barnd; Additional contributions by Mike Quinn
Frequently Asked Questions About Xanthonia angulata
What is Xanthonia angulata?
Xanthonia angulata is a species in the family Chrysomelidae, within the order Coleoptera.
How big is Xanthonia angulata?
length 3.5–4.0 mm
How do you identify Xanthonia angulata?
Elytra uniformly medium brown, immaculate (emphasis added); larger, length 3.5–4.0 mm; punctation of elytral disc subseriate; median lobe long, broad throughout length, with deep angular apical incision.
Where is Xanthonia angulata found?
Range: e. US: District of Columbia, Indiana, Kansas, Maryland, Missouri, Tennessee, and Virginia , plus Arkansas, Oklahoma and Texas (Bastrop Co.)
What does Xanthonia angulata eat?
The diet of the Xanthonia angulata includes oaks , including a series of 51 spmns coll'ed by EGR beating blackjack oak ( Quercus marilandica ) in Bastop Co., TX.
When is Xanthonia angulata active?
Xanthonia angulata: seasonal activity - April-June in TX.
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