eastern rose curculio

(Merhynchites bicolor)

               
Conservation Status

IUCN Red List

not yet assessed

eastern rose curculio

NatureServe

NNR - Unranked

Minnesota

not listed

Occurrence

Common

Flight/Season

Late May to early July

Habitat

 

Size

Total Length: 3 16 to ¼

         
         
         
         
          Photo by Alfredo Colon

Identification

This is a common, small, 3 16 to ¼ long, hard-bodied, bud weevil.

The forward segment of the body (prothorax) is much narrower than the base of the hardened wing covers (elytra). The upper plate covering the prothorax (pronotum) and elytra are both red and are covered with short, fine, erect hairs. The rest of the body is black.

The back of the head is red, the eyes and the rest of the head are black. The snout is elongated, much longer than the head, and downward curved. The antennae are straight, clubbed, and inserted partway down the snout.

The legs are black and are covered with short, fine, erect hairs.

 
Similar
Species

 


Larval Food

Fruits (hips) of various wild rose species.

 
Adult Food

Buds of various wild and cultivated rose species.

 
Life Cycle

The larvae develop in the hips of host species.

 
Behavior

Adults are found on the flowers of host species.


Distribution Distribution Map  

Sources: 24, 27, 29, 30.


Comments

Taxonomy
This species was formerly assigned to the genus Rhynchites.

What’s in a Name?
The common name eastern rose curculio is somewhat misleading. This species is found from northeastern United States across the continent to California and British Columbia. The western rose curculio (Merhynchites wickhami) has a more limited range, found from the west coast east to Texas, the Dakotas, and Illinois. It is not found in Minnesota.


Taxonomy

Order:

Coleoptera (beetles)

 

Suborder:

Polyphaga (water, rove, scarab, long-horned, leaf and snout beetles)

 

Infraorder:

Cucujiformia

 

Superfamily:

Curculionoidea (snout and bark beetles)

 

Family:

Attelabidae (leaf-rolling weevils)

 

Subfamily:

Rhynchitinae (leaf and bud weevils)

 
Synonyms

Rhynchites bicolor

 
Common
Names

eastern rose curculio

rose curculio


 

 

 

 

 

 

 

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.

 

Prothorax

The first (forward) segment of the thorax on an insect, bearing the first pair of legs but not wings.

 

 

 

 

 

       

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Alfredo Colon


  eastern rose curculio    

       
       
       

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Alfredo Colon
6/5/2018

Location: Woodbury, MN

eastern rose curculio


     
     
 

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