soldier beetle

(Trypherus frisoni)

Conservation Status
soldier beetle (Trypherus frisoni)
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

not listed

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Trypherus frisoni is a medium-sized, soft-bodied, soldier beetle. It occurs in North America in the Midwest, from Ontario and Ohio in the east to Minnesota and Arkansas in the west. It is considered “not uncommon,” meaning that it occurs too frequently to be considered uncommon, bot not frequently enough to be considered common.

Adults are ¼ to long. The body is elongated, slender, and somewhat flattened, and has nearly parallel sides.

The head is much wider than the exoskeletal plate covering the thorax (pronotum). It is visible from above, not completely concealed by the pronotum. It is black above, yellow in front around the bases of the antennae. The mouth parts (mandibles) are yellowish and are directed forward. The antennae have eleven segments. They are long, thread-like, and dark brown. On the female, the tip of the abdomen has three lobes.

The pronotum is black with yellow margins. It is slightly wider than long and almost rectangular, with parallel sides, arced front margin, and wavy rear margin. It is flat above and has a broad, shallow, horse-shoe shaped depression near the middle of the base.

The wing covers (elytra) are leathery, flexible, and black, with bright, orangish-yellow tips. They are short, about twice as long as the pronotum, and cover less than half of the abdomen. The hind wings are black and long, but do not completely cover the abdomen.

The legs are long, slender, and mostly brownish-yellow. On the middle leg, the outer half of the third segment (femur) is black. On the hind leg, the tip of the femur and the entire fourth segment (tibia) are black. The end part of each leg (tarsus), corresponding to the foot, has 5 segments. The fourth segment has a lobe on the underside. On the middle and hind legs, the tarsi are black.

 
     
 

Size

 
 

Total Length: ¼ to

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

Prairies

 
     
 
Biology
 
 

Season

 
 

Mid-June to late July

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Food

 
 

 

 
     
 

Adult Food

 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 29, 30.

 
  4/10/2019      
         
 

Occurrence

 
 

Not uncommon

 
         
 
Taxonomy
 
 

Order

Coleoptera (beetles)  
 

Suborder

Polyphaga (water, rove, scarab, longhorn, leaf and snout beetles)  
 

Infraorder

Elateriformia  
 

Superfamily

Elateroidea (click, firefly and soldier beetles)  
 

Family

Cantharidae (soldier beetles)  
 

Subfamily

Chauliognathinae  
 

Tribe

Ichthyurini  
 

Genus

Trypherus  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

This species has no common name. The common name of the family Cantharidae is soldier beetles, and is applied 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.

 

Femur

On insects and arachnids, the third, largest, most robust segment of the leg, coming immediately before the tibia. On humans, the thigh bone.

 

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

The last two to five subdivisions of an insect’s leg, attached to the tibia; the foot. Plural: tarsi.

 

Tibia

The fourth segment of an insect leg, after the femur and before the tarsus (foot).

 

 

 

 

 

       
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Alfredo Colon
       
  soldier beetle (Trypherus frisoni)   soldier beetle (Trypherus frisoni)
       
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Alfredo Colon
8/5/2018

Location: Woodbury, Minnesota

soldier beetle (Trypherus frisoni)


     
     
 
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Created: 4/10/2019

Last Updated:

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