Euxoa costata - Hodges#10825
Euxoa costata
This record describes Euxoa costata (species). Recorded family: Noctuidae. Recorded order: Lepidoptera.
Identification and Appearance

Forewing reddish-brown with contrasting silver-gray costa, reniform spot and orbicular spot; cubital vein not pale.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Noctuoidea
- Family
- Noctuidae (Owlet Moths)
- Subfamily
- Noctuinae
- Tribe
- Noctuini
- Genus
- Euxoa
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
dry coniferous forest
Geographic Range
southern British Columbia southward in the Cascades and Sierra Nevada to the Transverse Ranges of southern California
Seasonal Activity
mid-July to early September
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Euxoa costata. Species-specific details appear above.
Group overview
Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.
Ecological role of the group
Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.
Economic and practical significance of the group
Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.
Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.
Photos of Euxoa costata - Hodges#10825 (4)
Photo credits: Contributed by Jim Johnson; Additional contributions by Steve Morris
Frequently Asked Questions About Euxoa costata - Hodges#10825
What is Euxoa costata - Hodges#10825?
Euxoa costata - Hodges#10825 (Euxoa costata) is a species in the family Noctuidae, within the order Lepidoptera.
How big is Euxoa costata - Hodges#10825?
forewing length 14-18 mm
How do you identify Euxoa costata - Hodges#10825?
Forewing reddish-brown with contrasting silver-gray costa, reniform spot and orbicular spot; cubital vein not pale.
Where is Euxoa costata - Hodges#10825 found?
| Feature | Details |
|---|---|
| Habitat | dry coniferous forest |
| Range | southern British Columbia southward in the Cascades and Sierra Nevada to the Transverse Ranges of southern California |
When is Euxoa costata - Hodges#10825 active?
Euxoa costata - Hodges#10825: seasonal activity - mid-July to early September.
FROM LOOKING IT UP TO GETTING TO KNOW IT
Make sense of the bugs at home.50 household bug profiles for you. Photos, coloring, and activities for curious kids.




