Eugnamptus nigriventris
This record describes Eugnamptus nigriventris (species). Recorded family: Attelabidae. Recorded order: Coleoptera.
Identification and Appearance

Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Curculionoidea
- Family
- Attelabidae (Leaf Rolling Weevils)
- Subfamily
- Rhynchitinae
- Tribe
- Rhynchitini
- Genus
- Eugnamptus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
sw. US (AZ‒w.TX) / nw. Mex. (SON) - Map , mostly se AZ-sw NM
Seasonal Activity
late Apr‒Sep, mostly Jun‒Jul
Diet and Behavior
Diet: on Juglans, Quercus
Life History
comes to lights
Additional species information
Species notes from the sources
Etymology: Eugnamptus nigriventris Schaeffer 1905
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Eugnamptus nigriventris. 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 Eugnamptus nigriventris (2)
Photo credits: Contributed by Phillip Harpootlian; Additional contributions by Mike Quinn , v belov
Frequently Asked Questions About Eugnamptus nigriventris
How big is Eugnamptus nigriventris?
3.4‒6.3 mm
Where is Eugnamptus nigriventris found?
Range: sw. US (AZ‒w.TX) / nw. Mex. (SON) - Map , mostly se AZ-sw NM
What does Eugnamptus nigriventris eat?
The diet of the Eugnamptus nigriventris includes on Juglans, Quercus.
When is Eugnamptus nigriventris active?
Eugnamptus nigriventris: seasonal activity - late Apr‒Sep, mostly Jun‒Jul.
What is the life cycle of a Eugnamptus nigriventris?
comes to lights
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