Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Species Hemileuca juno - Juno Buck Moth - Hodges#7735

Saturniid? - Hemileuca juno Moth Sp? - Hemileuca juno Juno Buck Moth - Hemileuca juno Juno Buck Moth larva - Hemileuca juno What kind of moth? - Hemileuca juno Caterpillar - Hemileuca juno Black n white fuzzy headed moth - Hemileuca juno Black n white fuzzy headed moth - Hemileuca juno
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Bombycoidea (Silkworm, Sphinx, and Royal Moths)
Family Saturniidae (Giant Silkworm and Royal Moths)
Subfamily Hemileucinae (Buck and Io Moths)
Tribe Hemileucini
Genus Hemileuca
Species juno (Juno Buck Moth - Hodges#7735)
Hodges Number
Synonyms and other taxonomic changes
Hemileuca juno Packard, 1872
* phylogenetic sequence #225100
wingspan 58-80 mm
Adult: forewing black or dark gray with band of large white spots in PM area; reniform spot white or pale yellow; white basal dash near costa; hindwing black, usually with some white spots in female; abomen black, with reddish tip in male; antennae pectinate in male, simple in female

Larva: early instars all black with branched spines arising from tubercles on all segments; final instar densely speckled with white, giving overall grayish appearance, except for reddish tubercles
New Mexico to southern California, south into western Mexico (see distribution map at
desert scrub and mesquite woodlands; adults fly during the day but are also active at night and come to light
adults fly from September to December
larvae from April to June
larvae feed mainly on flowers and flower buds of mesquite (Prosopis spp.)
adults do not feed
Life Cycle
one generation per year; eggs are laid in fall in groups on hostplant; eggs overwinter and hatch in early spring; larvae pupate in leaf litter in May and June, and adults usually emerge that fall, although some may delay emergence for up to four years [adapted from and]
See Also
other species of Hemileuca have a different pattern on forewing and/or hindwing (see images of several species by Bob Nuelle at MPG, and links to images at Bruce Walsh's site)
Print References
Comstock, J. A. & C. M. Dammers 1938. Studies on the metamorphoses of six California moths. Southern California Acad. Sci. 37(3): 116-118, pl.39-40
Ferguson, D. C. 1971. Moths of America North of Mexico. Fascicle 20.2a: p.125, pl.8.1-2
Internet References
Moth Photographers Group - species page
pinned adult image of male (left) and female (Bruce Walsh, Moths of Southeastern Arizona)
pinned adult image by Paul Opler, plus common name reference, distribution map, description, and other info (
live larva image late instar (Bruce Walsh, Arizona)
presence in California; list (U. of California at Berkeley)