Euxoa olivalis - Hodges#10833
Euxoa olivalis
This record describes Euxoa olivalis (species). Recorded family: Noctuidae. Recorded order: Lepidoptera.
Identification and Appearance

The light grey or white cubital vein will distinguish most specimens of Euxoa olivalis from E. plagigera . Dissection may be required on some specimens for positive identification.
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
Geographic Range
Southern California, Arizona, and northern New Mexico to British Columbia and Saskatchewan. ,
Seasonal Activity
June to August.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Euxoa olivalis. 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 olivalis - Hodges#10833 (4)
Photo credits: Contributed by Maury J. Heiman; Additional contributions by Kyhl Austin
Frequently Asked Questions About Euxoa olivalis - Hodges#10833
What is Euxoa olivalis - Hodges#10833?
Euxoa olivalis - Hodges#10833 (Euxoa olivalis) is a species in the family Noctuidae, within the order Lepidoptera.
How big is Euxoa olivalis - Hodges#10833?
Forewing length 12–16 mm.
How do you identify Euxoa olivalis - Hodges#10833?
The light grey or white cubital vein will distinguish most specimens of Euxoa olivalis from E. plagigera . Dissection may be required on some specimens for positive identification.
Where is Euxoa olivalis - Hodges#10833 found?
Range: Southern California, Arizona, and northern New Mexico to British Columbia and Saskatchewan. ,
When is Euxoa olivalis - Hodges#10833 active?
Euxoa olivalis - Hodges#10833: seasonal activity - June to August..
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