Agrotis gravis

Grote, 1874

Agrotis gravis is a noctuid described by Grote in 1874. It is restricted to a highly specialized coastal , occurring exclusively on sandy ocean beaches with foreshore dunes along the Pacific coast of North America. The species has been documented from British Columbia southward through California, with 22 iNaturalist observations recorded. Its narrow and specific substrate requirements make it vulnerable to coastal habitat disturbance.

CATALOGUE-BM-LXVIII by Sir GEORGE F. HAMPSON, Bart.. Used under a Public domain license.

Pronunciation

How to pronounce Agrotis gravis: /əˈɡroʊtɪs ˈɡrævɪs/

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Identification

No specific diagnostic features distinguishing Agrotis gravis from congeneric are documented in available sources. Identification likely requires examination of genitalic or other subtle morphological characters typical of Agrotis species discrimination.

Images

Habitat

Sandy ocean beaches, typically with foreshore dunes. The shows strict fidelity to this coastal dune .

Distribution

Pacific coast of North America, from British Columbia south to California.

Similar Taxa

Other Agrotis speciesCongeneric in the Agrotis share general noctuid and require careful examination to distinguish; many Agrotis are cutworms with broader ranges and agricultural associations, unlike the strictly coastal A. gravis

More Details

Habitat specificity

The strict restriction to sandy ocean beaches with foreshore dunes is notable among Agrotis , most of which are or associated with agricultural and grassland .

Conservation implications

Coastal dune are subject to development pressure, recreational use, and sea level change, potentially threatening this narrowly distributed .