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Species Perizoma basaliata - Square-patched Carpet - Hodges#7316

7316 – Perizoma basaliata – Square-patched Carpet Moth - Perizoma basaliata Larentiinae - Perizoma basaliata Perizoma basaliata Perizoma basaliata moth - Perizoma basaliata 7312 Double-banded Carpet (Spargania magnoliata) - Perizoma basaliata Perizoma ? - Perizoma basaliata Martania basaliata - Perizoma basaliata
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 Perizoma
Species basaliata (Square-patched Carpet - Hodges#7316)
Hodges Number
Other Common Names
Twin-spot Wave
Synonyms and other taxonomic changes
described in 1862 by Walker, who originally placed it in genus Larentia

Perizoma basaliata (Walker, 1862)
Martania basaliata (Walker, 1862)
Emmelesia taeniata of authors not Stephens, 1831
Cidaria explagiata Walker, 1863
Larentia basaliata Walker, 1862
Phylogenetic Sequence # 910159
wingspan about 19-23 mm, based on two photos at CBIF
Adult: forewing variably boldly patterned (with large orangish bands bordering gray median band) to more uniformly colored grayish-brown with less distinct markings; subterminal area often has centrally-located pale whitish patch bordered by dark rectangular patch near apex; basal line arc-shaped with small central indentation; AM, PM, and subterminal lines white with thin dark edges; hindwing dirty white with faint scalloped PM line and dark dashed terminal line
Newfoundland to British Columbia and adjacent northern states, south in the east to North Carolina/Tennessee (1)(2)(3)
adults fly from late May to early September
Life Cycle
Female with eggs:
See Also
Sometimes this species may be hard to separate from Perizoma grandis where the ranges overlap.

The AM line is usually a little more jagged on the Double-banded Carpet - Spargania magnoliata. The thorax is usually not darker than the abdomen.
Internet References
pinned adult image and photos of related species by Jim Vargo (Moth Photographers Group)

Old Links: (BROKEN)
flight season and pinned adult image by A.W. Thomas (Natural Resources Canada)
presence in North Carolina/Tennessee; list (Discover Life In America,
common name reference [Square-patched Carpet] (NHIC; Ontario Ministry of Natural Resources)
presence in Alberta; list of 35 specimen records with dates and locations, plus common name reference [Square-patched Carpet] (Strickland Entomological Museum, U. of Alberta)
common name reference; PDF doc [Twin-spot Wave] (Charles Bird, Alberta Parks, Govt. of Alberta)