Montana Field Guide

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Home - Other Field Guides
- Kingdom - Animals - Animalia
  - Phylum - Spiders, Insects, and Crustaceans - Arthropoda
    - Class - Insects - Insecta
      - Order - Butterflies / Moths - Lepidoptera
        
        Family - Snout Moths - Pyralidae
        
        Species - Leach's Grass-veneer Moth - Crambus leachellus

Leach's Grass-veneer Moth - Crambus leachellus

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Native Species

Global Rank: GNR
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:

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General Description

C. leachellus is a moderately large Crambid (25 - 27 mm wingspan) with medium brown forewings that have a wide longitudinal silvery white discal stripe which ends before the subterminal line. This stripe lacks a tooth below and is not cut by an oblique line. The forewings have a triangularly produced apex. There is a row of five dark spots in the subterminal line. The hindwing is smoky white. The cilia of both fore and hind wings are silvery metallic. Males are similar to females (Powell and Opler, 2009).

Phenology

C. leachellus adults have been collected in Alberta from August to mid September (Powell and Opler, 2009).

Range Comments

C. leachellus is a widespread North American species (Powell and Opler, 2009).

Observations in Montana Natural Heritage Program Database

Number of Observations: 3

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Relative Density

Recency

(Observations spanning multiple months or years are excluded from time charts)

Habitat

C. leachellus prefers grassland areas (Powell and Opler, 2009).

Food Habits

It is presumed that C. leachellus larvae feed on grasses (Powell and Opler, 2009).

Stewardship Responsibility

References

Literature Cited AboveLegend: View Online Publication
- Powell, J.A. and P.A. Opler. 2009. Moths of Western North America. University of California Press, Berkeley, CA. 369 pp.
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Citation for data on this website:
Leach's Grass-veneer Moth — Crambus leachellus. Montana Field Guide. Montana Natural Heritage Program. Retrieved on December 21, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IILER5Z190