juniper stink bug

(Banasa euchlora)

Conservation Status
juniper stink bug
Photo by Bird Lady
  IUCN Red List

not listed

 
  NatureServe

not listed

 
  Minnesota

not listed

 
           
           
 
Description
 
 

Juniper stink bug is a common, easily identified, relatively small stink bug. It occurs throughout the United States except for North Dakota, and South Dakota, where it is rare, and Montana and Wyoming, where there are no records of it. It occurs in southern Canada from Nova Scotia to Manitoba and in British Columbia, and it occurs in Mexico and Bermuda. In the U.S. it is common in the east and very common in the south. It is uncommon in Minnesota.

Juniper stink bugs are active from late May to early October. They are plant feeders and are found mostly on eastern redcedar and other species of juniper.

Adults are to 716 (9 to 11 mm) in length. The body is elongated oval and almost parallel sided, appearing broad-shouldered and somewhat shield shaped. It is jade green (dark) with heavy yellowish-white, greenish-white, or cream-colored (pale) speckling and scattered pale spots.

The head is small, slightly longer than wide, slightly narrowed in front, and rounded at the tip. There are two pale, longitudinal stripes at the back of the head. The protruding mouthpart (beak) is short. The antennae are slender and green, and they have five segments. The first segment is shorter than the head, the fifth segment is the longest, and the second segment is about half as long as the fifth segment and three fourths as long as the third segment.

The thorax is more than twice as wide as long. The exoskeletal plate covering the thorax (pronotum) is moderately sloping in front, narrow behind the head, and broadest near the rear. The shoulder (humeral) angles are broadly rounded. There are scattered pale spots on the front part of the pronotum. The plate between the wing bases (scutellum) is large and triangular. It is broad at the base and gradually narrowed to a U-shaped lobe at the tip. There is a yellow or pale, crescent-shaped band at the tip of the scutellum, and a similarly colored spot at each front corner. The corner spots readily distinguish juniper stink bug from similar species. The surfaces of the pronotum and scutellum are sparsely and coarsely pitted (punctate).

The abdomen has a flattened, enlarged margin (connexivum). The connexiva are pale with six pairs of dark spots. When the hemelytra are closed, the connexiva are slightly exposed or completely hidden.

There are two pairs of wings, and they are held flat over the body when at rest. The forewings (hemelytra) are slightly longer than the abdomen. They are finely and rather evenly punctate. They have a thickened, leathery section at the base and a thin membranous section at the tip with a clear dividing line between the two. The thickened basal part is comprised of a narrow area (clavus) behind the scutellum when the wings are closed, and the remaining broad marginal area (corium). There are scattered pale spots on the corium.

The hindwings are thin, membranous, and concealed under the forewings.

The legs are green. The last part of each leg (tarsus), corresponding to the foot, has three segments.

 
     
 

Size

 
 

Total length: to 716 (9 to 11 mm)

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

 

 
     
 
Biology
 
 

Season

 
 

Late May to early October

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

Adults overwinter

 
     
 

Nymph Food

 
 

 

 
     
 

Adult Food

 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

29, 30, 82, 83.

 
  11/13/2023      
         
 

Occurrence

 
 

Uncommon in Minnesota

 
         
 
Taxonomy
 
 

Order

Hemiptera (true bugs, hoppers, aphids, and allies)  
 

Suborder

Heteroptera (true bugs)  
 

Infraorder

Pentatomomorpha (pentatomomorph bugs)  
 

Superfamily

Pentatomoidea (stink bugs, shield bugs, and allies)  
 

Family

Pentatomidae (stink bugs)  
 

Subfamily

Pentatominae  
  Tribe Pentatomini  
 

Genus

Banasa  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

juniper stink bug

 

 

 

 

 

 

Glossary

Beak

On plants: A comparatively short and stout, narrow or prolonged tip on a thickened organ, as on some fruits and seeds. On insects: The protruding, tubular mouthpart of a sucking insect.

 

Clavus

On Hemiptera: The hard part of the forewing that is adjacent to the scutellum when the wings are closed. Plural: clavi.

 

Connexivum

In Heteroptera: the enlarged, flattened margins of the abdomen. Plural: connexiva.

 

Corium

The thickened basal portion of the front wing that lies between the clavus and the membrane of insects in the family Hemiptera. Plural: coria.

 

Hemelytron

The forewing of true bugs (Order Hemiptera), thickened at the base and membranous at the tip. Plural: hemelytra.

 

Pronotum

The exoskeletal plate on the upper side of the first segment of the thorax of an insect.

 

Punctate

Dotted with pits, translucent sunken glands, or colored spots of pigment.

 

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

On insects, the last two to five subdivisions of the leg, attached to the tibia; the foot. On spiders, the last segment of the leg. Plural: tarsi.

 

 

 

 

 
 
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Other Videos
 
  A Juniper Stink Bug (Banasa euchlora)
Kahanu Ermeyas-Tulu
 
   
 
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Aug 29, 2023

 

 

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  Bird Lady
11/8/2023

Location: Colerain Township, Ohio

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Created: 11/13/2023

Last Updated:

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