Identification
Adult: top of head and neck dark; forewing shiny, brownish-gray with pale yellowish patches and lines; reniform spot dark, circular, surrounding by pale ring; AM line thick, sharp-angled but shallow zigzag; ST line thick and straight at costa and inner margin, middle portion U-shaped, thin, jagged
Larva: black with small whitish spots and sparse hairs
Range
most of North America plus Eurasia, Australia & New Zealand, and probably other places throughout the world
Habitat
around or in human habitations and buildings: homes, outhouses, barns, stables
Season
adults fly from June to September in the northern hemisphere, but may be found in any month indoors
Food
larvae feed on stored foods, vegetable debris, grain chaff, fungi, and dead animals
Remarks
Probably introduced from western Eurasia, like other Aglossa
See Also
Grease Moth (
A. cuprina) is similar but top of head and neck is pale yellowish, and the AM line has a single large V-shaped "tooth" extending into the medial area (see comparison images in Moth Photographers Group link below)
Large Tabby (
A. pinguinalis) is larger, and forewing is more uniformly mottled (not as patchy)
Internet References
live and pinned adult images by various photographers, and common name reference [Stored Grain Moth] (Moth Photographers Group)
adult image (Larry Line, Maryland)
description plus habitat, food plants, and flight season (The Larger Moths of Suffolk, UK)
larva and pupa images (Agricultural Research Service, USDA)
presence in Florida; list (Michael Thomas, Florida State Collection of Arthropods)
presence in Ontario; list (NHIC; Ontario Ministry of Natural Resources)