Insect Identification logo

Changeable Grass-Veneer (Fissicrambus mutabilis)

Detailing the identifying qualities of the Changeable Grass-Veneer, including physical features and territorial reach.

 Updated: 2/15/2018; Authored By Staff Writer; Content ¬©

  Changeable Grass-Veneer  
Picture of Changeable-Grass-Veneer-Moth
Picture of Changeable-Grass-Veneer-Moth Picture of Changeable-Grass-Veneer-Moth

A long, furry snout and a flexible stretch while resting are hallmarks of the Changeable Grass-Veneer Moth.

The Changeable Grass-Veneer likes to rest in a position that resembles a downward-facing dog yoga pose. Front legs are fully extended in front and lowered close to the surface. The tops of the legs are brown while the rest of the legs are white. Closed wings of the moth rise up in back. The brown wings have short zigzag lines on the posterior and the short palps are furry extensions in front of the face, giving them the appearance of a long nose or snout.

Grass is a common place to find this type of moth because its worm-like larvae feed on the leaves (blades). They are considered lawn moths for this reason. They are at home in backyards and golf courses as well as wild plains and woodlands. Extensive feeding or large numbers of larvae can damage turf, making them a pest to stadia, golf course, and groundskeepers trying to keep a clean, uniform lawn. Their larval form even has its own common name: Striped Sod Webworms.

Picture of the Changeable Grass-Veneer
Picture of the Changeable Grass-Veneer

Changeable Grass-Veneer Information

Category: Butterfly or Moth
Common Name: Changeable Grass-Veneer
Scientific Name: Fissicrambus mutabilis
Other Name(s): Striped Sod Webworm, Lawn Moth

Taxonomy Hierarchy

 Arrow graphic Kingdom: Animalia
  Arrow graphic Phylum: Arthropoda
   Arrow graphic Class: Insecta
    Arrow graphic Order: Lepidoptera
     Arrow graphic Family: Crambidae
      Arrow graphic Genus: Fissicrambus
       Arrow graphic Species: mutabilis

Size, Identifying Tags and Territorial Reach

Size (Adult, Length): Size (Adult, Length): 9 mm to 12 mm (0.351 inches to 0.468 inches)
Identifying Colors: brown, ivory, tan
Additional Descriptors: long, thin, hairy, flying, tilt, downward, rolled, antennae

North American Territorial Reach (Though Not Limited To): Alabama; Arkansas; Connecticut; Delaware; Florida; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Nebraska;New Hampshire; New Jersey; New York; North Carolina; North Dakota; Ohio; Oklahoma; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Vermont; Virginia; West Virginia; Wisconsin; British Columbia; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec

A Note About Territorial Reach: Keep in mind that an insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above. Insects are driven by environmental factors, food supplies and mating patterns and do not nescessarily work within hard-and-fast territorial lines like we humans do.

Images Gallery


BugFinder: What is it?