Euxoa costata

Grote, 1876

Euxoa costata is a noctuid found in the Pacific Northwest of North America. It is particularly abundant in ponderosa pine forests east of the Cascade Mountains. The species has a wingspan of approximately 34 mm. Like other members of the Euxoa, it is a species attracted to light.

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Pronunciation

How to pronounce Euxoa costata: /juːkˈsoʊ.ə kɔsˈtɑː.tə/

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Identification

The can be distinguished from similar Euxoa species by its geographic restriction to ponderosa pine forests east of the Cascade Mountains. Precise diagnostic morphological features distinguishing E. costata from are not documented in available sources.

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Appearance

have a wingspan of approximately 34 mm. Specific coloration and pattern details are not documented in available sources.

Habitat

Ponderosa pine forests east of the Cascade Mountains. The shows strong association with this specific forest type in the northwestern United States.

Distribution

British Columbia, Canada, south into the northwestern United States. Abundant in the ponderosa pine forests east of the Cascade Mountains in Washington and Oregon.

Behavior

; are attracted to light sources.

Similar Taxa

  • Euxoa auxiliarisBoth are Euxoa found in western North America, but E. auxiliaris is a widespread agricultural pest with a documented migratory to alpine areas, while E. costata has a more restricted range associated with ponderosa pine forests.
  • Other Euxoa speciesThe Euxoa contains numerous similar-appearing noctuid ; precise identification of E. costata requires examination of genitalia or other subtle morphological features not detailed in available sources.

More Details

Taxonomic history

Originally described as Agrotis costata by Grote in 1876, later transferred to Euxoa.

Data limitations

This has received limited scientific study compared to the economically important E. auxiliaris. Most available information is restricted to basic distribution records and wingspan measurement.

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Sources and further reading