soldier beetle

(Trypherus frisoni)

               
Conservation Status

IUCN Red List

not listed

soldier beetle (Trypherus frisoni)

 

NatureServe

not listed

Minnesota

not listed

Occurrence

Not uncommon

Flight/Season

Mid-June to late July

Habitat

Prairies

Size

Total Length: ¼ to

         
         
         
         
          Photo by Alfredo Colon

Identification

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.

 
Similar
Species

 


Larval Food

 

 
Adult Food

 

 
Life Cycle

 

 
Behavior

 


Distribution Distribution Map  

Sources: 24, 29, 30.


Comments

No Common Name
This species has no common name. The common name of the family Cantharidae is soldier beetles, and is applied here for the sake of convenience.


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

 
Synonyms

 

 
Common
Names

no common name


 

 

 

 

 

 

 

Glossary

Elytra

The hardened 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)    

       
       
       

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Alfredo Colon
8/5/2018

Location: Woodbury, Minnesota

soldier beetle (Trypherus frisoni)


     
     
 

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