Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Macaria notata - Birch Angle - Hodges#6330

Common Angle Moth - Macaria aemulataria - Macaria notata Birch Angle - Macaria notata birch angle - Macaria notata birch angle - Macaria notata Macaria notata/aemulataria comparison - Macaria notata Macaria notata - Birch Angle - Hodges#6330 - Macaria notata - male Macaria notata Macaria notata
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 notata (Birch Angle - Hodges#6330)
Hodges Number
Synonyms and other taxonomic changes
Macaria notata (Linnaeus, 1758)
Phalaena notata Linnaeus, 1758
Philobia ulsterata Pearsall, 1913
Semiothisa ulsterata
Macaria ulsterata
Explanation of Names
Specific epithet notata is Latin meaning "marked." (1)
wingspan about 25-29 mm, based on several Internet photos
Adult: forewing bright white with three usually distinct transverse lines crossing wing; heavy brown or blackish patch mid-way along PM line, and another dark patch where PM line meets costa; outer margin falcate (having sickle-shaped indentation) near apex, and accented by dark fringe; hindwing similarly colored except for lack of dark patches on PM line; distinct point mid-way along outer margin, giving an almost tailed appearance
Nova Scotia to British Columbia and Northwest Territories, south in the east to North Carolina, south in the west to Colorado and Oregon
mixedwood and deciduous forests and woodlands; adults are nocturnal and come to light
flight period peaks in June
larvae feed on leaves of primarily birch (Betula) and alder (Alnus)
Life Cycle
one generation per year; overwinters as a pupa
See Also
Common Angle (Macaria aemulataria) is smaller (20-22 mm), does not occur in British Columbia, and wings are not as white as notata
Print References
Linnaeus, 1758. Systema Naturae per Regna Tria Naturae, Secundum Clases, Ordines, Genera, Species, cum Characteribus, Differentiis, Symonymis, Locis. Tomis I. 10th Edition Syst. Nat. (Edn 10) 1 : 523.
Pearsall, R.F., 1913. The Genus Philobia Duponchel, and Some Representatives in Our Fauna. (Lep., Geom.) Journal of the New York Entomological Society. 21: 188.