Minnesota longhorn beetle

(Trigonarthris minnesotana)

               
Conservation Status

IUCN Red List

not yet assessed

Minnesota longhorn beetle

NatureServe

NR - Unranked

Minnesota

not listed

Occurrence

 

Flight/Season

May to July

Habitat/Hosts

Deciduous and mixed forests

Size

Total Length: ½ to ¾

          Photo by Chuck Bush

Identification

This is a moderate-sized flower longhorn beetle, ½ to ¾ in length. Males may have longer antennae but are otherwise indistinguishable from females.

The thoracic plate (pronotum) is narrower than the base of the hardened wing covers (elytra), and is densely covered with straight tan hairs. The elytra taper evenly from the base to the blunt tip. They are mostly bronze-colored but black at the tip.

The compound eyes are large, bulbous, and oval. They do not wrap around the antennae bases. The face slants forward.

 
Similar
Species

Flower longhorn beetle (Trigonarthris proxima)


Larval Food

Decomposing wood of hickory, elm, and black cherry

 
Adult Food

Nectar and/or pollen of flowers

 
Life Cycle

 

 
Behavior

 


Distribution Distribution Map  

Sources: 24, 29, 30.


Comments

 


Taxonomy

Order:

Coleoptera (beetles)

 

Suborder:

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

 

Infraorder:

Cucujiformia

 

Superfamily:

Chrysomeloidea (long-horned and leaf beetles)

 

Family:

Cerambycidae (long-horned beetles)

 

Subfamily:

Lepturinae (flower long-horned beetles)

 

Tribe:

Lepturini

 
Synonyms

 

 
Common
Names

Minnesota longhorn beetle


 

 

 

 

 

Glossary

elytra

The hardened forewings on an insect used to protect the fragile hindwings, which are used for flying, in beetles and true bugs

 

pronotum

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

 

 

 

 

 

       

Visitor Photos

   
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Chuck Bush


  Minnesota longhorn beetle    

       
       
       

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Other Videos

 
  Flower Longhorn Beetle (Cerambycidae: Trigonarthris minnesotana?) on Leaf
Carl Barrentine
 
   
 
About

Published on Jun 13, 2012

Photographed at the Turtle River State Park, North Dakota (12 June 2012).

 
     
  Genus Trigonarthris - Moving on Up
Nature's Wild Things
 
   
 
About

Published on May 21, 2017

Genus Trigonarthris

Moving on Up

60 sec long 100% speed - Audio None

Cabarrus County, North Carolina, United States

Photo Walk - 05-18-2017

 
     
  Longhorn Beetle (Cerambycidae: Trigonarthis) on Blossom
Carl Barrentine
 
   
 
About

Published on Jun 23, 2010

Photographed at Turtle River State Park, North Dakota (22 June 2010).

 
     

 

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Chuck Bush
6/25/2017

Location: East Grand Forks, Polk County, MN

Minnesota longhorn beetle


     
     
 

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