Link to Western Wallflower (Erysimum capitatum) host plant observation: https://www.inaturalist.org/observations/208642233

Northern Cloudywing (Thorybes pylades) A.k.a Cecropterus pylades. Small butterfly in the Skippers (Hesperiidae) family with a wingspan of 1.25-1.5 inches. It has one flight, March-July. It is found on hilltops in the Santa Lucia mountain range, riparian canyons, and in pine-oak woodlands. Favorite adult nectar plants: mints, vetches, thistle, Brodiaea, and California Buckeye. Larval food plants are in the Pea family: Acmispon, Lotus, and Vetches.

Butterflies of Monterey County: A comprehensive guide to finding and identifying 91 species of butterflies in Monterey County, by Chris Tenney and photograher Jan Austin, August 2023, 160-161.
(calls it by genus name Cecropterus, as of 4/22/24)

eButterfly (lists 6 subspecies, calls it by genus name Cecropterus, as of 4/22/24)
https://www.e-butterfly.org/ebapp/en/species/profile/5

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Butterfly and Caterpillar References (in general)

eButterfly: (2115+ species) https://www.e-butterfly.org/ebapp/en/observations/explore

Butterflies of Monterey County: A comprehensive guide to finding and identifying 91 species of butterflies in Monterey County, by Chris Tenney and photograher Jan Austin, August 2023, pp.xx and Butterflies of Monterey County (companion website to text): https://www.montereybutterflies.online/

Butterflies Through Binoculars: The West: a field guide to the butterflies of western North America, by Jeffrey Glassberg, 2001

Glossary of Butterfly (and Moth) Terminology: https://butterfly.ucdavis.edu/resources/glossary

BugGuide: Butterflies and Moths (U.S. and Canada) clickable categories or use search bar: https://bugguide.net/node/view/57

Field Guide to California Insects, by Kip Will, J. Gross, D. Rubinoff , J. Powell, 2nd ed., 2020 (Lepidoptera, pp. 347-426)

Butterflies and Moths of North America https://www.butterfliesandmoths.org/species_search

Butterflies of Central and Northern California, a laminated pamphlet (guide to common and notable species) by Jim Brock,, 2023

Caterpillar Anatomy diagram and Butterfly Basics: https://www.enchantedlearning.com/subjects/butterfly/activities/printouts/caterpillarprintout.shtml Life Cycle of a Butterfly: Egg --> Larva (the caterpillar) --> Pupa (the chrysalis or cocoon) --> Adult.

Caterpillars: INaturalist Project https://www.inaturalist.org/projects/california-caterpillars

Wagner's Caterpillars of Western North America "last we heard 1450 species accounts were in progress" thebals 6/6/23.

http://socalbutterflies.com/index.htm