Ctenucha multifaria
{{Short description|Species of moth}}
{{Speciesbox
| image = Ctenucha multifaria 3.jpg
| image_caption =
| taxon = Ctenucha multifaria
| authority = (Walker, 1854)
| synonyms =
- Apistosia multifaria Walker, 1854
- Ctenucha multifaria var. luteoscapus Neumoegen & Dyar, 1893
}}
Ctenucha multifaria is a moth of the family Erebidae. It was described by Francis Walker in 1854. It is found along the coast in the US states of California, north of the city of Santa Maria, and Oregon.{{cite web |last=Savela |first=Markku |url=http://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/noctuoidea/arctiidae/ctenuchinae/ctenucha/#multifaria |title=Ctenucha multifaria (Walker, 1854) |website=Lepidoptera and Some Other Life Forms |accessdate=January 25, 2018}}[http://mothphotographersgroup.msstate.edu/species.php?hodges=8263 Moth Photographers Group]. Mississippi State University.[http://pnwmoths.biol.wwu.edu/browse/family-erebidae/subfamily-arctiinae/tribe-arctiini/ctenucha/ctenucha-rubroscapus/ Pacific Northwest Moths]{{Cite book |last=Will |first=Kip |title=Field Guide to California Insects |last2=Gross |first2=Joyce |last3=Rubinoff |first3=Daniel |last4=Powell |first4=Jerry A. |publisher=University of California Press |year=2020 |isbn=9780520288744 |location=Oakland, California |pages=382-383}} This is a diurnal moth, meaning it is active during the day.
Adult C. multifaria is similar to the brown-winged ctenucha of southern California, but with black wings instead of brown. The body is blue and {{Convert|20-26|mm|in}} in length. Head and shoulder markings are red. The wingspan is {{Convert|46–50|mm|in}}.[http://bugguide.net/node/view/731189 BugGuide] Forewings are black with white margin.
Larvae are hairy, and the eventual cocoon is formed by these hairs.