Synonyms and other taxonomic changes
Packard, 1864 (125)
Phylogenetic sequence # 930312
Forewing length 16-24 mm. (Powell & Opler)(1)
Forewing length 19-26 mm. (Pacific Northwest Moths) (2)
Original description online: (125)
Wings pure white, usually with several scattered tiny black dots; inner surface of front leg femur with pink or reddish hairs; head and thorax white, hairy.
Washington to California(3)
and Baja California.(1)
Moth Photographers Group
- large map with some distribution data.
Most California records of adults are from January to August. (4)
May to June for Oregon and Washington. (4)
Larvae feed on leaves of various flowering trees, particularly oak (Quercus spp.)
Fall Webworm Moth
), Spilosoma congrua
, and S. virginica
are similar but do not have pink or reddish hair on inner surface of foreleg femur (see pinned adult images
Pink-legged Tiger Moth
) is similar, and has pink or reddish hair on inner surface of foreleg femur, but only occurs in the east.
; Lymantriidae) has pale yellow on thorax, base of forewing, and along costa, and has black rings on its legs.
Packard, 1864. Proceedings of the Entomological Society of Philadelphia. vol. 3, p. (125)
Powell, J.A., & P.A. Opler 2009. Moths of Western North America. pl. 47.28; p. 270.(1)