seed-eating ground beetle

(Amara lunicollis)

               
Conservation Status

IUCN Red List

not listed

seed-eating ground beetle (lunicollis)

NatureServe

NNR - Unranked

Minnesota

not listed

Occurrence

Uncommon

Flight/Season

 

Habitat

Forest edges and openings, cultivated fields, meadows, roadsides, and other open areas

Size

Total Length: ¼ to (7.3 to 9.0 mm)

         
         
          Photo by Sara Brice
 
Identification

Amara lunicollis is a medium-sized, seed-eating, ground beetle. It occurs in northern Europe, where it is widespread and common, and in southern Canada and northern United States, where it is scattered and uncommon. It is found in forest edges and openings, cultivated fields, meadows, roadsides, and other open areas, especially near water. Adults feed on seeds.

Adults are ¼ to (7.3 to 9.0 mm) long and elongated oval shaped. They are shiny black with a copper-colored iridescence.

The antennae are reddish-brown, are thread-like, and have 11 segments. They are inserted between the compound eyes and the mandibles. The mouth parts are directed forward.

The exoskeletal plate covering the thorax (pronotum) is broad. The sides are slightly curved. The lateral margins have a narrow, flattened, sharp edge. The rear margin is straight, not wavy. There is a depression near the base at the middle. The exoskeletal plate between the wing bases (scutellum) is visible.

The hardened wing covers (elytra) are long, completely covering the abdomen. Each elytron has 7 longitudinal grooves and no pits (punctures).

The legs are reddish-brown. The fourth segment (tibia) of the front leg has a spur at the tip. The spur is not forked. The last part of each leg (tarsus), corresponding to the foot, has five segments.

 
Similar
Species

 

 
Larval Food

 

 
Adult Food

Seeds

 
Life Cycle

 

 
Behavior

 

Distribution Distribution Map  

Sources: 24, 29, 30, 82.

 
Comments

 

 
Taxonomy

Order:

Coleoptera (beetles)

 

Suborder:

Adephaga (ground and water beetles)

 

Superfamily:

Caraboidea

 

Family:

Carabidae (ground beetles)

 

Subfamily:

Harpalinae

 

Tribe:

Zabrini (seed-eating ground beetles)

 

Genus:

Amara (seed-eating ground beetles)

 

Subgenus:

Amara

 
Synonyms

 

 
Common
Names

This species has no common name. The common name of the genus Amara is seed-eating ground beetle and is used here for convenience.

 

 

 

 

 

 

Glossary

Elytra

The hardened or leathery forewings on an insect used to protect the fragile hindwings, which are used for flying, in beetles and true bugs. Singular: elytron.

 

Pronotum

The saddle-shaped, exoskeletal plate on the upper side of the first segment of the thorax of an insect.

 

Scutellum

The exoskeletal plate covering the rearward (posterior) part of the middle segment of the thorax in some insects. In Coleoptera, Hemiptera, and Homoptera, the dorsal, often triangular plate behind the pronotum and between the bases of the front wings. In Diptera, the exoskeletal plate between the abdomen and the thorax.

 

Tarsus

On insects, the last two to five subdivisions of the leg, attached to the tibia; the foot. On spiders, the last segment of the leg. Plural: tarsi.

 

Tibia

The fourth segment of an insect leg, after the femur and before the tarsus (foot). The fifth segment of a spider leg or palp.

 

 

 

 

 

       
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Sara Brice
       
  seed-eating ground beetle (lunicollis)    
       
       
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About

Oct 5, 2020

Amara lunicollis. Gatunek chrząszcza z rodziny biegaczowatych - Carabidae.

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Google translation: Amara lunicollis. A species of beetle from the carabidae family - Carabidae.
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Sara Brice
10/30/2020

Location: Rice County MN

seed-eating ground beetle (lunicollis)


     
     
 
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Created: 11/3/2020

Last Updated:

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