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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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Species Spodolepis substriataria - Hodges#6799

Spodolepis 01 - Spodolepis substriataria Heterocera 22 - Spodolepis substriataria Spodolepis substriataria  Spodolepis(Epirranthis) substriataria 6799 - Spodolepis substriataria Eggs of this species - Spodolepis substriataria Spodolepis - Spodolepis substriataria Spodolepis substriataria - female Spodolepis substriataria
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Ennominae
Tribe Epirranthini
Genus Spodolepis
Species substriataria (Spodolepis substriataria - Hodges#6799)
Hodges Number
Synonyms and other taxonomic changes
Epirranthis substriataria - see genus page for info on classification
the only species in this genus in North America and the world
wingspan 40-45 mm
Adult: forewing light gray with black speckling, often with shades of brown along costa and apex; jagged AM and PM lines resemble a dog's head in profile, with the dark discal spot forming the eye; extent of dark markings, including the transverse lines, can be extremely variable, resulting in well-marked, contrasting individuals to almost unmarked gray ones
[adapted from description at U. of Alberta]

Larva: body dark with intricate pattern of black and brown, resembling tree bark or a twig
Alaska to Nova Scotia, south in the east to New Jersey, south in the west to California
mixed and coniferous forests
adults fly from April to June (in Alberta)
larvae feed on douglas-fir, pine, poplar, willow
Life Cycle
one generation per year; overwinters as a pupa in thin cocoon in leaf litter
See Also
the "dog's head" pattern on the forewing is distinctive
Internet References
live adult image (Lynn Scott, Ontario)
pinned adult images showing variation in color (CBIF)
pinned adult images (Moth Photographers Group)
overview including habitat, seasonality, description, biology, food plants, distribution (Strickland Entomological Museum, U. of Alberta)
presence in California; list (U. of California at Berkeley)
distribution in Canada list of provinces and territories (CBIF)