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Species Macaria oweni - Owen's Larch Granite - Hodges#6351

Black-spotted Moth - Macaria oweni Pi Moth - Macaria oweni Hodges#6351 - Macaria oweni small moth - Macaria oweni Geometridae: Macaria oweni - Macaria oweni Owen's Larch Granite (Macaria oweni)  - Macaria oweni - female Owen's Larch Granite (Macaria oweni)  - Macaria oweni Owen's Larch Granite (Macaria oweni)  - Macaria oweni
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 Ennominae
Tribe Macariini
Genus Macaria
Species oweni (Owen's Larch Granite - Hodges#6351)
Hodges Number
Other Common Names
Owen's Larch Looper
Synonyms and other taxonomic changes
Semiothisa oweni
described in 1907 by Swett, who originally placed it in genus Sciagraphia
wingspan 23-25 mm, based on two Internet images
Adult: forewing white, heavily speckled with grey; four heavy black blotches along costa. AM and PM lines bold, black, jagged; median line usually broken into several dark spots. The white ground colour gives this species a very contrasting look, unlike the drabber, greyer Macaria species whose markings are otherwise similar. Except for small discal dot, hindwing lacks all black markings; ground colour and speckling similar to forewing.
Newfoundland to west-central Alberta, south in the east to northern New England (McGuffin 1972)
boreal bogs and fens containing larch; adults are nocturnal and come to light
adults fly in June and July
larvae feed only on larch (Larix spp.)
Internet References
distribution map plus live and pinned adult images by various photographers, references (Moth Photographers Group)
common name reference [Owen's Larch Granite] plus habitat, flight season, description, larval foodplant, distribution, references (Strickland Entomological Museum, U. of Alberta)
presence in Canada list of provinces of occurrence (CBIF)