Species Details

Eurois occulta

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameGreat Gray Dart; Great Brocade SeasonalityJune through early September. IdentificationA rather large moth (5.5 - 6.5 cm. ws) with grey and black FW. The normal noctuid pattern is well marked, the lines doubled. The AM and PM lines are bordered in white, and the claviform and orbicular clearly marked with pale scales. Reniform large, but not contrasting strongly with the ground. Median and terminal areas darker. HW sooty gray-black, fringe white and contrasting sharply. Antennae simple. Sexes similar. Can be separated from Eurois nigra by the black HW with white fringe, and from Eurois astricta by the grey and black instead of brown FW.

Scientific Name Eurois occulta Common Name Great Gray Dart; Great Brocade Habitat Woodlands and edges. Seasonality June through early September. Identification
A rather large moth (5.5 - 6.5 cm. ws) with grey and black FW. The normal noctuid pattern is well marked, the lines doubled. The AM and PM lines are bordered in white, and the claviform and orbicular clearly marked…
A rather large moth (5.5 - 6.5 cm. ws) with grey and black FW. The normal noctuid pattern is well marked, the lines doubled. The AM and PM lines are bordered in white, and the claviform and orbicular clearly marked with pale scales. Reniform large, but not contrasting strongly with the ground. Median and terminal areas darker. HW sooty gray-black, fringe white and contrasting sharply. Antennae simple. Sexes similar. Can be separated from Eurois nigra by the black HW with white fringe, and from Eurois astricta by the grey and black instead of brown FW.
Conservation Widespread and fairly common. Diet Info
A variety of trees, shrubs and herbs. In North America Tamarack, Trembling aspen, alder and willow have been reported, with Tamarack listed as the major host (Prentice et al, 1962)! European records include alder,…
A variety of trees, shrubs and herbs. In North America Tamarack, Trembling aspen, alder and willow have been reported, with Tamarack listed as the major host (Prentice et al, 1962)! European records include alder, willow, Ribes, Rose, Lathyrus, Chamaenerion, Vaccinium myrtillus, V. uliginosum, and Thymus.
Range Eurasia and temperate North America. In NA, from Lab and NJ west across southern Canada to the Pacific. Notes Eurois occulta comes to light and is often rather common at sugar bait. Some authors spell the specific name occultus.

Citation

Page Citation for Eurois occulta

Page Citation

"Eurois occulta, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6387. Accessed 29 Nov. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Noctuoidea Family Noctuidae Subfamily Noctuinae Genus Eurois Species Eurois occulta
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum