green plant bug

(Ilnacora malina)

Conservation Status
green plant bug
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

not listed

     
  Minnesota

not listed

     
           
           
           
           
 
Description
 
 

Plant bugs (family Miridae) is the largest family of true bugs (suborder Heteroptera). There are more than 10,000 known species worldwide, several hundred in North America. Green plant bug is a small, soft-bodied true bug, a medium-sized to large plant bug. It occurs in the United States east of the Great Plains, from Vermont to Minnesota south to Missouri and Virginia, and in adjacent Canadian provinces. Based on the number of reported sightings in North America, it is not very common.

Adults are soft-bodied, elongated, slender, almost parallel-sided, and 3 16 to ¼ (5 to 7 mm) in length.

The head is wider than the base of hardened plate covering the thorax (pronotum). The front of the head is almost vertical. The compound eyes are large and oval. There are no simple eyes (ocelli). The face and the top of the head are black. The beak-like part of the head containing the mouth parts (rostrum) has four segments. It is short, stout, and projects downward and forward when sucking plant juices. The neck is well defined. The antennae have four segments beyond the short basal segment (scape). They are thin and long, much longer than the head and as long as the entire thickened wing covers (hemelytra). The last half of the first segment and the entire second segment are black. The last two segments are much paler.

The pronotum is wider than long and is bell-shaped when viewed from above. It is yellowish-green at the front, fading to green at the rear. It is sparsely covered with short white hairs. There is a round black spot on each side.

There are two pairs of wings. They are held flat over the body when at rest. They are longer than and completely cover the body. The front wings (hemelytra) are longer than the hind wings. The exoskeletal plate between the wing bases (scutellum), is large, triangular, and green, with a depressed black spot in the middle at the base. The hemelytra have a thickened, leathery part at the base and a thin membranous part at the tip with a clear dividing line between the two. The thickened part is comprised of the narrow area (clavus) behind the scutellum when the wings are closed and the broad marginal area (corium). At the end of the corium there is a small but distinct triangular area (cuneus). The clavus, corium, and cuneus are green. There is a prominent dark streak in the middle of the clavus, a thinner streak in the corium, and a black spot in the cuneus. The membranous tip is dark black with yellow veins. It has two closed cells. The hind wing is completely thin and membranous.

The legs are green, long, and delicate. The third leg segment (femur) is stout and somewhat flattened. The fourth segment (tibia) of the hind leg is very long. The end part of the leg (tarsus), corresponding to the foot, has 3 segments. The tips of the tibia and tarsi are brownish-black.

 
     
 

Size

 
 

Total Length: 3 16 to ¼ (5 to 7 mm)

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

Damp, shady, grassy and weedy areas

 
     
 
Biology
 
 

Season

 
 

Mid-June to late July

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

 

 
     
 

Nymph Food

 
 

 

 
     
 

Adult Food

 
 

Plant juices of giant ragweed and goldenrod.

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 29, 30.

 
  6/15/2019      
         
 

Occurrence

 
 

Not common

 
         
 
Taxonomy
 
 

Order

Hemiptera (true bugs, hoppers, aphids and allies)  
 

Suborder

Heteroptera (true bugs)  
 

Infraorder

Cimicomorpha (cimicomorph bugs)  
 

Superfamily

Miroidea  
 

Family

Miridae (plant bugs)  
 

Subfamily

Orthotylinae  
 

Tribe

Orthotylini  
 

Genus

Ilnacora  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

green plant bug

 
       

 

 

 

 

 

 

 

Glossary

Cuneus

The triangular, hardened, horn-like tip of the forewing of a plant bug (family Miridae).

 

Femur

On insects and arachnids, the third, largest, most robust segment of the leg, coming immediately before the tibia. On humans, the thigh bone.

 

Hemelytron

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

 

Ocellus

Simple eye; an eye with a single lens. Plural: ocelli.

 

Pronotum

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

 

Rostrum

The stiff, beak-like projection of the carapace or prolongation of the head of an insect, crustacean, or cetacean.

 

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

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). The fifth segment of a spider leg or palp.

 

 

 

 

 

 
 
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Alfredo Colon

 
    green plant bug      
           
 
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  Alfredo Colon
8/20/2018

Location: Woodbury, Minnesota

green plant bug  
           
 
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Created: 6/15/2019

Last Updated:

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