Agonoleptus conjunctus
This record describes Agonoleptus conjunctus (species). Recorded family: Carabidae. Recorded order: Coleoptera.
Identification and Appearance

Within the genus, can be recognized by normal metasternum (i.e. wings normally developed, unlike in A. thoracicus ), a pale pronotum (sometimes clouded) that contrasts with the dark head, and the aedeagus not hooked at the tip. Wing-dimorphic, mostly macropterous; common at lights
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Adephaga
- Family
- Carabidae (Ground Beetles)
- Subfamily
- Harpalinae
- Tribe
- Harpalini
- Genus
- Agonoleptus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Wide variety of habitats, from forests & prairies to cultivated and disturbed areas; under debris, stones, leaf litter, etc. ( 4 )
Geographic Range
Transcontinental (across so. Canada to FL‒CA & Mexico) ( 3 )
Seasonal Activity
year-round ( 4 )
Diet and Behavior
Life History
Adults overwinter, sometimes gregariously; breeds in spring ( 4 )
Additional species information
Species notes from the sources
Etymology: Agonoleptus conjunctus (Say 1823)
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Agonoleptus conjunctus. 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 Agonoleptus conjunctus (5)
Photo credits: Contributed by tom murray; Additional contributions by Bbarnd , v belov
Frequently Asked Questions About Agonoleptus conjunctus
What is Agonoleptus conjunctus?
Agonoleptus conjunctus is a species in the family Carabidae, within the order Coleoptera.
How big is Agonoleptus conjunctus?
3.2‒4.3 mm
How do you identify Agonoleptus conjunctus?
Within the genus, can be recognized by normal metasternum (i.e. wings normally developed, unlike in A. thoracicus ), a pale pronotum (sometimes clouded) that contrasts with the dark head, and the aedeagus not hooked at the tip.
Where is Agonoleptus conjunctus found?
| Feature | Details |
|---|---|
| Habitat | Wide variety of habitats, from forests & prairies to cultivated and disturbed areas; under debris, stones, leaf litter, etc. ( 4 ) |
| Range | Transcontinental (across so. Canada to FL‒CA & Mexico) ( 3 ) |
When is Agonoleptus conjunctus active?
Agonoleptus conjunctus: seasonal activity - year-round ( 4 ).
What is the life cycle of a Agonoleptus conjunctus?
Adults overwinter, sometimes gregariously; breeds in spring ( 4 )
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