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For Insects, Spiders & Their Kin
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Species Protoboarmia porcelaria - Porcelain Gray - Hodges#6598

spanworm caterpillar - Protoboarmia porcelaria Porcelain Gray - Protoboarmia porcelaria Porcelain Gray - Protoboarmia porcelaria Porcelain Gray - Protoboarmia porcelaria geometrid - Protoboarmia porcelaria Unknown Moth - Protoboarmia porcelaria Porcelain Gray - Protoboarmia porcelaria Protoboarmia porcelaria
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 Boarmiini
Genus Protoboarmia
Species porcelaria (Porcelain Gray - Hodges#6598)
Hodges Number
Other Common Names
Dash-lined Looper (larva)
Synonyms and other taxonomic changes
Protoboarmia porcelaria (Guenée)
Orig. Comb: Boarmia porcelaria Guenée, [1858]
wingspan 27-30 mm
Adult: wings pale brownish-gray crossed by dark brown/gray curving lines, at least one of which has small dentate (tooth-like) marks along its length; darkest mark on forewing is blackish blotch at costa where postmedian (PM) line begins; discal spot represented by short streak near point where antemedian (AM) line touches costa; hindwing discal spot usually present near center of wing
e. U.S. and across Canada - Map (MPG)
mostly: Apr-Oct (longer in the south) - MPG
larvae feed on cedar, balsam fir, douglas-fir, hemlock, larch, pine, spruce, soapberry, birch, elm, oak, poplar,
See Also
Small Engrailed (Ectropis crepuscularia) is larger, lacks discal spot on both wings, and darkest mark on forewing is along PM line near center of wing (compare images of both species at CBIF)
Internet References
Lepidoptera of Wayne County, Ohio - Ohio State University