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

quite variable in appearance. Future study may well prove that multiple true species are involved. ( 3 ) Type Locality: Arizona
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Chrysomeloidea
- Family
- Chrysomelidae (Leaf Beetles)
- Subfamily
- Galerucinae
- Tribe
- Luperini
- Genus
- Triarius
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
so. AZ to w. TX (to Crockett and Val Verde Counties) / Mex. - Map ( 4 ) ( 3 ) ( 5 )
Seasonal Activity
April to July ( 3 )
Diet and Behavior
Life History
reported from Dasylirion and Nolina (Asparagaceae); and Xerophyllum (Melanthiaceae) ( 6 ) ( 3 )
Additional species information
Species notes from the sources
Etymology: livid (L). 'ashen'
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Triarius lividus. 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 Triarius lividus (3)
Photo credits: Contributed by Mike Quinn
Frequently Asked Questions About Triarius lividus
What is Triarius lividus?
Triarius lividus is a species in the family Chrysomelidae, within the order Coleoptera.
How do you identify Triarius lividus?
quite variable in appearance. Future study may well prove that multiple true species are involved. ( 3 )
Where is Triarius lividus found?
Range: so. AZ to w. TX (to Crockett and Val Verde Counties) / Mex. - Map ( 4 ) ( 3 ) ( 5 )
When is Triarius lividus active?
Triarius lividus: seasonal activity - April to July ( 3 ).
What is the life cycle of a Triarius lividus?
reported from Dasylirion and Nolina (Asparagaceae); and Xerophyllum (Melanthiaceae) ( 6 ) ( 3 )
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