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Species Macaria sexmaculata - Six-spotted Angle - Hodges#6343

Moth: Macaria sp. - Macaria sexmaculata Macaria sexmaculata Macaria sexmaculata Macaria sexmaculata Macaria sexmaculata Macaria sexmaculata Macaria sexmaculata Six-spotted Angle   - Macaria sexmaculata
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 sexmaculata (Six-spotted Angle - Hodges#6343)
Hodges Number
Other Common Names
Larch Looper (larva)
Green Larch Looper (larva)
Synonyms and other taxonomic changes
formerly Semiothisa sexmaculata
Explanation of Names
SEXMACULATA: from the Latin "sex" (six) + "macula" (a spot); refers to the adult, and is the origin of the common name "Six-spotted Angle"
wingspan 16-24 mm
larvae to 18 mm
Adult: amount of spotting varies: well-marked individuals have 3 lines running completely across the forewing, and the beginning of a 4th (subterminal) line at the costa; large dark blotch present in subterminal area halfway across wing; forewing ground color white, shading to medium brown in subterminal area
hindwing ground color white; 3 lines noticeable along inner margin but fade out before reaching halfway across wing; both wings covered with brown speckling

Larva: body green with distinct pale stripes; also purplish-brown form; yellowish-green head with bluish forehead; dark green middorsal stripe edged distinctly with white; broad, white subdorsal stripe; mainly white spiracular stripe with light yellow near spiracles; yellow band on hind margin of segments; prolegs usually blushed with whitish-yellow
from Alaska to Nunavut and Newfoundland, south in the east to Massachusetts, and south in the west to Oregon
boreal forest, edges of sphagnum bogs, mixed woods with tamarack or western larch
adults fly from June to August
larvae from July to October
larvae feed on tamarack and western larch
Life Cycle
one or two generations per year; overwinters as a pupa in soil or sphagnum moss
Internet References
common name reference [Six-spotted Angle] and flight season (Ohio State U.)
live larva image plus common name reference [Green Larch Looper], description of larva, food plant, biology (
live larva image plus common name reference [Larch Looper], description, food plants, biology (Canadian Forest Service)