ColeopteraCarabidae – Ground Beetles

Agonoleptus conjunctus

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

Identification and Appearance

Agonoleptus conjunctus - Agonoleptus conjunctus
Contributed by tom murray; Additional contributions by Bbarnd , v belov

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.

Explore Coleoptera families and species →

Photos of Agonoleptus conjunctus (5)

Agonoleptus conjunctus - photo 1
Contributed by tom murray; Additional contributions by Bbarnd , v belov
Agonoleptus conjunctus - photo 2
Contributed by tom murray; Additional contributions by Bbarnd , v belov
Agonoleptus conjunctus - photo 3
Contributed by tom murray; Additional contributions by Bbarnd , v belov
Agonoleptus conjunctus - photo 4
Contributed by tom murray; Additional contributions by Bbarnd , v belov
Agonoleptus conjunctus - photo 5
Contributed by tom murray; Additional contributions by Bbarnd , v belov

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?
FeatureDetails
HabitatWide variety of habitats, from forests & prairies to cultivated and disturbed areas; under debris, stones, leaf litter, etc. ( 4 )
RangeTranscontinental (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 )

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by tom murray; Additional contributions by Bbarnd , v belov. Contributors retain copyright over their individual contributions.