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

See Moth submissions from National Moth Week 2023

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

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

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

Photos of 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

Previous events


Species Rheumaptera undulata - Hodges#7291

Rheumaptera undulata Rheumaptera undulata Moth - Rheumaptera undulata Rheumaptera undulata maybe - Rheumaptera undulata Geometridae: Rheumaptera prunivorata - Rheumaptera undulata Rheumaptera undulata - Hodges#7291 - Rheumaptera undulata - female Rheumaptera undulata Rheumaptera undulata
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 Larentiinae
Tribe Hydriomenini
Genus Rheumaptera
Species undulata (Rheumaptera undulata - Hodges#7291)
Hodges Number
Synonyms and other taxonomic changes
Calocalpe undulata
Hydria undulata
37mm wingspan(1)
Larvae are 20mm(1)

Larvae bodies are blackish above with 4 longitudinal yellow lines and straw yellow beneath.(1)
Holarctic; in North American, Labrador to Maine, west through Canada, south to Minnesota. (2)
Mostly Jun-Aug - MPG
Azalea, spiraea, rhodora, and willows. (2); Alder, blueberry, poplar, and presumably other plants (3)
Life Cycle
Larvae live in nests constructed by webbing together leaves toward the end of the branch.(1)
See Also
Covell (2) describes this species as having a "pattern less sharp and bright" than that of R. prunivorata, "but so similar that the 2 species can best be distinguished by genitalia and larval characteristics."
Internet References
Works Cited
1.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.
2.Peterson Field Guides: Eastern Moths
Charles V. Covell. 1984. Houghton Mifflin Company.
3.Caterpillars of Eastern North America: A Guide to Identification and Natural History (Princeton Field Guides)
David L. Wagner. 2010. Princeton University Press, 1-496.