Abagrotis glenni

Can be distinguished from other Abagrotis species by geographic range and association with western coniferous forests. Adults fly in April–May, earlier than many related species. Larval association with Juniperus scopulorum and Thuja plicata may aid identification where these hosts occur. Genital dissection or molecular analysis may be required for definitive identification from similar congeners.

Wingspan approximately 33 mm. As a member of the genus Abagrotis, it likely exhibits the typical noctuid moth body plan with robust thorax, dull coloration, and forewings that fold tent-like over the abdomen at rest. Specific markings are not documented in available sources.

Coniferous forests of western North America, associated with Rocky Mountain juniper (Juniperus scopulorum) and western redcedar (Thuja plicata).

Western North America: British Columbia, south through Washington and Oregon to California, and east to Utah.

Adults on wing from April to May. Larval stage timing not documented.

Larvae feed on Juniperus scopulorum (Rocky Mountain juniper) and Thuja plicata (western redcedar). Adult feeding habits unknown.

• Juniperus scopulorum - larval hostRocky Mountain juniper
• Thuja plicata - larval hostwestern redcedar

Complete metamorphosis with egg, larva, pupa, and adult stages. Specific details of development timing and overwintering stage not documented.

Larval herbivore on coniferous trees; specific ecological impacts not documented.

• Other Abagrotis speciesCongeneric moths in western North America share similar morphology and require careful examination for separation; many lack detailed biological documentation.

• noctuidae
• moth
• western north america
• coniferous forest
• spring flight
• juniper
• cedar

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• In Search of Britain’s Endemics - Buglife Blog - Buglife