Eudryas brevipennis

Stretch, 1872

Eudryas brevipennis is a noctuid found in the western United States, specifically Idaho, Utah, and California. are active in spring and summer and are associated with wetland . The exhibits in forewing size, with females slightly larger than males. Two are recognized: the nominate form in California and E. b. bonneville in the northern Intermountain Region.

Eudryas brevipennis by (c) Crabo LG, Davis M, Hammond P, Mustelin T, Shepard J, some rights reserved (CC BY). Used under a CC-BY license.

Eudryas brevipennis by (c) Dominic, some rights reserved (CC BY), uploaded by Dominic. Used under a CC-BY license.

Pronunciation

How to pronounce Eudryas brevipennis: /juːˈdraɪəs brɛˌvɪˈpɛnɪs/

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Identification

Distinguished from similar Eudryas by its western distribution and specific wing pattern. The combination of white forewings with dark brown markings, yellow hindwings with brown margins, and association with wetland helps distinguish it from related species. Forewing measurements can aid in sex determination.

Images

Habitat

Wetland , generally near wetlands in Idaho, Utah, and California

Distribution

Western United States: Idaho, Utah, and California. Two with distinct ranges: E. b. brevipennis in California (Los Angeles area, Central Valley, San Francisco Bay Area) and E. b. bonneville in the Lake Bonneville basin of the northern Intermountain Region, especially along the Snake River in Idaho.

Seasonality

are on wing in spring and summer

Diet

Larvae feed on Oenothera and Epilobium

Host Associations

Oenothera - larval food plant
Epilobium - larval food plant

Life Cycle

Complete with , larva, pupa, and stages. Larval stage feeds on specific plants (Oenothera and Epilobium). Adults emerge in spring and summer.

Similar Taxa

Other Eudryas speciesSimilar wing patterns and , but distinguished by geographic distribution and specific associations

More Details

Subspecies

Two recognized: Eudryas brevipennis brevipennis (California: Los Angeles, Central Valley, San Francisco Bay Area) and Eudryas brevipennis bonneville Shepard & Crabo, 2013 (Lake Bonneville basin in northern Intermountain Region, especially along Snake River in Idaho).