flower longhorn beetle

(Charisalia americana)

Conservation Status
flower longhorn beetle (Charisalia americana)
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Charisalia americana is a relatively rare, moderate sized, flower longhorn beetle. It is the only species in the genus Charisalia. It occurs in the United States east of the Great Plains.

Adults are 5 16to 7 16 long and cylindrical. Males and females are the same size.

The head is reddish-orange, angled forward in front, and abruptly constricted in back forming a neck that is visible when viewed from above. The compound eyes are black, small, and deeply notched. The antennae are slender, black, and long, almost as long as the body. The base of each antenna inserted in the notch in the compound eye. The third segment is shorter than the first, the fourth is shorter the third, and the fifth is longer than the third. The fifth through the last segments are moderately to densely covered with very short hairs. On females the antennae are shorter, extending only to about the third abdominal segment.

The upper thoracic shield (pronotum) is bell-shaped and wider than long. It is narrow at the front and almost as wide at the base as the base of the hardened wing covers (elytra). It is inflated (arched) on top (dorsally). It has a shallow impression in the middle near the base. The angles at the rear (posterior) corners of the pronotum are very sharp and point outward. It is sparsely covered with very fine pits. It is also covered with short, curved hairs.

The elytra are entirely black and elongated, about 2½ times as long as the base is wide. They are parallel from the base to the middle, slightly expanded beyond the middle toward the tip. The tips are distinctly cut off (truncate), and do not cover the very end of the abdomen. The elytral surface is pitted, finely and sparsely near the base and at the tip, coarsely in the middle. It is also moderately covered with short hairs.

The legs are slender, entirely black, and covered with fine hairs and pits. The fourth segment (tibia) has a spur at the tip and on males is arced. The last part of each leg (tarsus), corresponding to the foot, is black. The tarsus has five segments but the first segment is minute, making it appear that there are only four segments. On the hind leg, the tarsi are slender. The first segment is longer than the second and third segments together. The third segment is split beyond the middle.

 
     
 

Size

 
 

Total Length: 5 16to 7 16

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

 

 
     
 
Biology
 
 

Season

 
 

April to July

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Food

 
 

There are very few recorded sightings of this beetle larvae. It was collected on a dead and decaying tulip tree (Liriodendron spp.) stump, and was reported on a tupelo tree (Nissa spp.).

 
     
 

Adult Food

 
 

There are very few recorded sightings of this beetle adult. It has been collected or recorded on dogwood flowers (Cornus spp.), rose flowers (Rosa spp.), viburnum (Viburnum spp.), and cow parsnip (Heracleum).

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 27, 29, 30.

 
  11/13/2018      
         
 

Occurrence

 
 

Relatively rare

 
         
 
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  
 

Genus

Charisalia  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

This species has no common name. The common name of the subfamily Lepturinae is flower long-horned 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.

 

Pronotum

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

 

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

 
    flower longhorn beetle (Charisalia americana)      
           
 
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  Alfredo Colon
6/11/2018

Location: Woodbury, Minnesota

flower longhorn beetle (Charisalia americana)  
           
 
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Created: 11/13/2018

Last Updated:

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