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Species Mesoleuca gratulata - Western White-Ribboned Carpet - Hodges#7308

First Moth of 05 - Mesoleuca gratulata moth - Mesoleuca gratulata Mesoleuca gratulata Mesoleuca gratulata Western White-ribboned Carpet Moth - Mesoleuca gratulata Unidentified moth - Mesoleuca gratulata Western White-Ribboned Carpet  - Mesoleuca gratulata Moth at 10,000 feet - Mesoleuca gratulata
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Larentiinae
Tribe Hydriomenini
Genus Mesoleuca (White-Ribboned Carpets)
Species gratulata (Western White-Ribboned Carpet - Hodges#7308)
Hodges Number
Synonyms and other taxonomic changes
Mesoleuca gratulata (Walker, 1862)
Explanation of Names
GRATULATA: from the Latin "gratulatus" (to express joy or gratification at the sight of); the first yearly sighting of these pretty and conspicuous day-flying moths is gratifying because it is a sure sign of spring in the west
One of just 2 species in genus in NA
wingspan 23-27 mm
forewing with broad white medial band and broad black curving postmedial band; prominent black discal spot; basal area black
California to Colorado, north to southern BC and Alberta
woodlands and parks
adults fly during the day mostly in early spring (February-April), with a few late stragglers until mid-June
larvae present from early to late spring
larvae feed on leaves of Rubus species and hazel (Corylus cornuta)
Life Cycle
eggs are laid singly in early spring on leaves or buds of Blackberry (Rubus discolor) or Thimbleberry (R. parviflora); caterpillars hatch in about 10 days, pupate in about 3 weeks, and overwinter; adults emerge the following spring
See Also
compare images of M. gratulata and M. ruficillata (CBIF)
Internet References
Moth Photographers Group - range map, photos of living and pinned adults.
live larva and adult images plus biology (Jeremy Tatum, Butterflies and Moths of Southern Vancouver Island)
pinned adult image [by Jeff Miller] (Macromoths of Northwest Forests and Woodlands; USGS)