flower longhorn beetle

(Analeptura lineola)

Conservation Status
flower longhorn beetle (Analeptura lineola)
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Analeptura lineola is a slender, tapered, small to moderate-sized, flower longhorn beetle. It is common to abundant in most of its range from Maine to Minnesota, adjacent Canadian provinces, and south along the Appalachian Mountains to Georgia. It is less common in Minnesota, where it is at the western edge of its range.

Adults are 5 16 to ½ long. Males are slightly smaller and more slender than females.

The head is angled forward in front and is abruptly constricted in back forming a neck that is visible when viewed from above. It is mostly black except for the yellow mouth parts. The compound eyes are black, moderate-sized, and deeply notched. The antennae are slender, banded yellow and black, and long, about as long as the body. The base of each antenna is inserted in the notch in the compound eye. The third segment is longer than the first and the fifth segment is longer than the third.

The upper thoracic shield (pronotum) is bell-shaped, arched, narrow at the front, as wide at the base as the base of the hardened wing covers (elytra), and as long as the base is wide. It is slightly 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 densely covered with fine pits. It is also covered with short, fine, gold hairs, sparsely on top (dorsally), densely on the lowers sides.

The hardened wing covers (elytra) are long and narrow, more than 2½ times longer than wide. They taper evenly from the broad base to the narrow tip, making the body appear broad-shouldered. They are yellow with a variable amount of black marks. There is always a narrow black stripe along the inner margin (sutural stripe), a dark stripe in the middle (median stripe), and a broad stripe along the outer margin (lateral stripe). The tips are always black. There is often a darkened spot in the shoulder (humeral) area; sometimes a black, triangular spot near the middle connecting the median and lateral stripes; and sometimes a black spot near the tip merging with the median and lateral stripes. 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, yellow, and densely covered with fine hairs. 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. It 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 as long as all of the remaining segments together. The third segment is split beyond the middle.

 
     
 

Size

 
 

Total Length: ¼ to ½

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

 

 
     
 
Biology
 
 

Season

 
 

May to August

 
     
 

Behavior

 
 

Adults are active during the day.

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Food

 
 

Dead moist wood of hardwoods, including birch, blue beech, ironwood, and also pine

 
     
 

Adult Food

 
 

Nectar of a wide variety of flowers including grape; raspberry and blackberry; elderberry; meadowsweet; rose; cherry and plum; dogwood; knotweed; leadplant and false indigo; and false Solomon’s seal.

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 27, 29, 30.

 
  11/10/2018      
         
 

Occurrence

 
 

Common to abundant

 
         
 
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

Analeptura  
       
 

Synonyms

 
 

Analeptura indirecta

Stenura cincta

 
       
 

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 (Analeptura lineola)   flower longhorn beetle (Analeptura lineola)  
           
 
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  Alfredo Colon
6/8/2018

Location: Woodbury, MN

flower longhorn beetle (Analeptura lineola)  
           
 
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Created: 11/10/2018

Last Updated:

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