Digrammia setonana

(McDunnough, 1927)

Digrammia setonana is a of geometrid described by James Halliday McDunnough in 1927. It belongs to the Geometridae, a large group commonly known as inchworm or geometer moths. The species is native to North America and is part of the diverse Digrammia, which includes numerous species with cryptic, stone-mimicking wing patterns. Like other members of its genus, it is likely and attracted to ultraviolet light sources.

Digrammia setonana by (c)
Jeremy deWaard, University of British Columbia, some rights reserved (CC BY). Used under a CC-BY license.

Digrammia setonana by Jeremy deWaard, University of British Columbia. Used under a CC BY 3.0 license.

Digrammia setonana1 by Jeremy deWaard, University of British Columbia. Used under a CC BY 3.0 license.

Pronunciation

How to pronounce Digrammia setonana: //daɪˈɡræmiə ˌsɛtoʊˈnænə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Members of the Digrammia are characterized by cryptic wing patterns that resemble granite or stone surfaces, providing camouflage against rocky substrates. Specific identification of D. setonana requires examination of genitalia or detailed wing pattern analysis, as many Digrammia are visually similar. The species was originally described as Phasiane setonana before transfer to Digrammia.

Images

Distribution

North America

Behavior

Has been observed at blacklighting stations, indicating activity and attraction to ultraviolet light sources.

Similar Taxa

Digrammia californiariaBoth are North American geometrids with granite-mimicking wing patterns and have been recorded together at blacklighting events in California.
Digrammia muscariataAnother Digrammia frequently encountered at blacklighting displays in the same region; visual similarity requires careful examination for separation.

More Details

Taxonomic History

Originally described as Phasiane setonana by McDunnough in 1927, later transferred to the Digrammia.

Research Context

The is included in the Photographers Group database with Hodges number 6364, a standardized numbering system for North American Lepidoptera.