Imported Long-horned Weevil
Calomycterus setarius
This record describes Calomycterus setarius (species). Recorded family: Curculionidae. Recorded order: Coleoptera.
Identification and Appearance
see detailed description in may be very abundant on soybean crops and defoliate the seedlings ; when abundant, they crawl on humans, vehicles and in dwellings on walls, ceilings, furniture or even food on tables, and can cause complaints by homeowners
Identification notes
see detailed description in
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Curculionoidea
- Family
- Curculionidae (Snout and Bark Beetles)
- Subfamily
- Entiminae
- Tribe
- Cyphicerini
- Genus
- Calomycterus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
native to Japan, adventive in NA and now common in much of e. US (west to NE-KS) and adjacent Canada (so. QC, e. ON)
Seasonal Activity
in OH, adults emerge in late Jun and become abundant during Jul-Aug
Diet and Behavior
Diet: feeds on various herbaceous plants , incl. alfalfa and red clover
Life History
parthenogenetic
Additional species information
Species notes from the sources
Etymology: Calomycterus setarius Roelofs 1873
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Calomycterus setarius. 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 Imported Long-horned Weevil (5)
Photo credits: Contributed by tom murray; Additional contributions by v belov , onegunah
Frequently Asked Questions About Imported Long-horned Weevil
What is Imported Long-horned Weevil?
Imported Long-horned Weevil (Calomycterus setarius) is a species in the family Curculionidae, within the order Coleoptera.
How big is Imported Long-horned Weevil?
3.0-3.5 mm
How do you identify Imported Long-horned Weevil?
see detailed description in
Where is Imported Long-horned Weevil found?
Range: native to Japan, adventive in NA and now common in much of e. US (west to NE-KS) and adjacent Canada (so. QC, e. ON)
What does Imported Long-horned Weevil eat?
The diet of the Imported Long-horned Weevil includes feeds on various herbaceous plants , incl. alfalfa and red clover.
When is Imported Long-horned Weevil active?
Imported Long-horned Weevil: seasonal activity - in OH, adults emerge in late Jun and become abundant during Jul-Aug.
What is the life cycle of a Imported Long-horned Weevil?
parthenogenetic