elegant grass-veneer

(Crambus praefectellus)

common grass-veneer
Photo by Alfredo Colon
  Hodges #

5355

 
 
Conservation Status
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

SNR - Unranked

     
  Minnesota

not listed

     
           
 
Description
 
 

Elegant grass-veneer is a small moth but a large grass veneer. It occurs in the United States and southern Canada east of the Great Plains and on the West Coast, with just a few records from the Rocky Mountains and Great Plains states and provinces. It is common in Minnesota but usually occurs in small numbers. Adults are found from May to September in grassy woodlands, old fields, and weedy waste places. Larvae feed on grasses and cereal grains.

Adults are narrow-bodied. They are (16 mm) in length and have a wingspan of 1116 to 1 (18 to 25 mm).

The forewings are shiny brown to brownish-orange. There is a long, broad, uninterrupted, white or silvery streak along most of the length of the wing. The streak is widest beyond the middle and tapers to both ends. It is narrow in front, equal to or narrower than the space between the stripe and the leading edge (costal margin) of the wing. It terminates in the subterminal area, well before the outer margin. It is often bordered with a thin dark line, at least beyond the middle. There is often a tiny spur at the widest point that projects rearward toward the inner wing margin. There is a single inconspicuous line (subterminal or ST line) near the wing tip and a thin but dark and conspicuous line at the margin (terminal line). There are five short, black dashes, one on each vein, between the terminal line and the ST line. These are sometimes continued beyond the ST line as dark or whitish lines extending to the white stripe. Below the tip of the white stripe there is a white, broadly triangular patch on the costal margin, followed by a dark patch, and a small white patch above that. The ST line runs through the white costal patch. The fringes are white tinged with yellowish-orange.

The hind wings are white or cream-colored and have white fringes.

The antennae on the female are long, thread-like, and banded equally brown and white. On the male they are darker, slightly ringed, and plainly flattened. The finger-like sensory organs (palps) attached to the mouth are long and densely hairy. They are projected forward, appearing like a fuzzy snout.

The caterpillar is dull brown with a greenish tinge. The head is pale yellow.

 
     
 

Size

 
 

Total Length: (16 mm)

Wingspan: 1116 to 1 (18 to 25 mm)

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

Grassy woodlands, old fields, and weedy waste places

 
     
 
Biology
 
 

Season

 
 

One or two generation per year: May to September

 
     
 

Behavior

 
 

Adults rest with their wings held tight to the body, forming a tubular shape. They are active at night and will come to light.

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Hosts

 
 

Grasses and cereal grains

 
     
 

Adult Food

 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

21, 24, 29, 30, 72, 75, 82, 83.

 
  12/13/2020      
         
 

Occurrence

 
 

Common in Minnesota

 
         
 
Taxonomy
 
 

Order

Lepidoptera (butterflies and moths)  
 

Suborder

Glossata  
 

Infraorder

Neolepidoptera  
  Parvorder Heteroneura  
  No Rank Ditrysia  
  No Rank Obtectomera  
 

Superfamily

Pyraloidea (pyralid and crambid snout moths)  
 

Family

Crambidae (crambid snout moths)  
 

Subfamily

Crambinae (crambine snout moths)  
 

Tribe

Crambini (grass-veneers)  
 

Genus

Crambus  
       
 

Synonyms

 
 

Chilo praefectellus

Crambus involutellus

Crambus oslarellus

 
       
 

Common Names

 
 

common grass-veneer

silver-striped webworm

 
       

 

 

 

 

 

 

 

Glossary

Costal margin

The leading edge of the forewing of insects.

 

Palp

Short for pedipalp. A segmented, finger-like process of an arthropod; one is attached to each maxilla and two are attached to the labium. They function as sense organs in spiders and insects, and as weapons in scorpions. Plural: palpi.

 

 

 

 

 

       
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Alfredo Colon
       
  common grass-veneer    
       
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Other Videos
 
  Common Grass-veneer Moth (Crambidae: Crambus praefectellus?)
Carl Barrentine
 
   
 
About

Jul 5, 2011

Photographed at Turtle River State Park, North Dakota (05 July 2011).

   
       

 

Camcorder

         
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Alfredo Colon
8/9/2019

Location: Woodbury, MN

common grass-veneer


 
         
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Created: 12/13/2020

Last Updated:

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