Synonyms and other taxonomic changes
Lobocleta peralbata (Packard, 1873)
Acidalia peralbata Packard, 1873
Idaea peralbata
Acidalia longipennata Packard, 1873
phylogenetic Sequence # 208475
Identification
Adult: forewing white with extensive brown speckling; AM, median, and PM lines dark yellow, wavy; dark discal dot between AM and median lines; hindwing similar but lacks AM line; dark dashed terminal line and white fringe on both wings.
Specimen identified by DNA analysis:
Range
Arizona to Florida, north to North Carolina.
See Also
Idaea tacturata has less dark speckling on wings.
Idaea obfusaria has more dark shading adjacent to lines on wings.
Species of Scopula have either darker lines, no discal spots, and/or more lines on the hindwing.
Fragile White Carpet Moth -
Hydrelia albifera - (Subfamily
Larentiinae)

For ID details, check out the forum article here:
Conflation of two white GeometridsPrint References
Packard, A. S. 1873. Description of new North American Phalaenidae. Annual Rep. Peabody Acad. Sci. 1872:
70
Internet References
live adult image from Texas, plus date (Larry Line, Maryland)
pinned adult image plus date and location (Bruce Walsh, Moths of Southeastern Arizona)
pinned adult image (James Adams, Dalton State College, Georgia)
presence in Florida; list (John Heppner, Florida State Collection of Arthropods)