Achyra occidentalis
Packard, 1873
Achyra occidentalis is a crambid described by Packard in 1873. It exhibits two distinct color morphs: a dark form and a pale form, with active during different periods of the year. The is restricted to arid regions of the southwestern United States. Forewing length ranges from 10–12 mm.

Pronunciation
How to pronounce Achyra occidentalis: /əˈkaɪrə ˌɒksɪˈdɛntəlɪs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
occur in two distinct forms: a dark form and a pale form. The dark form is active March–April, while the pale form flies June–August. Forewing length 10–12 mm. Similar to other Achyra but distinguished by geographic range and bimodal seasonal tied to color morph.
Images
Distribution
Recorded from Arizona, California, and Nevada in the southwestern United States.
Seasonality
Dark form active March to April; pale form adults active June to August.
Similar Taxa
- Achyra rantalisCongeneric ; garden webworm is an agricultural pest with different distribution and
Sources and further reading
- BugGuide
- Wikipedia
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
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