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Species Euchlaena obtusaria - Obtuse Euchlaena - Hodges#6726

Obtusa? - Euchlaena obtusaria Ennominae? - Euchlaena obtusaria Obtuse Euchlaena   - Euchlaena obtusaria Geometridae: Euchlaena johnsonaria - Euchlaena obtusaria - female Euchlaena - Euchlaena obtusaria - female Euchlaena obtusaria - Obtuse Euchlaena - Euchlaena obtusaria Obtuse Euchlaena - Euchlaena obtusaria Euchlaena obtusaria - female
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 Angeronini
Genus Euchlaena
Species obtusaria (Obtuse Euchlaena - Hodges#6726)
Hodges Number
Synonyms and other taxonomic changes
Euchlaena obtusaria (Hübner, [1813])
Endropia obtusaria (Hübner, [1813])
Geometria obtusaria Hübner, [1813
Euchlaena ecisaria (Walker, 1860)
Decisaria incisaria (Walker, 1866)
Wingspan 27-48 mm
Adult: wings smooth purplish-gray, tan, or dark chestnut brown with yellow on median. The combination of black spots at tip of forewing and deeply serrated hindwing is a distinguishing feature of this species.
Larva: an excellent twig mimic, striped with pale brown and bearing two short dorsal protuberances on the fifth abdominal segment. [Wagner et al. 2001]

Eastern two-thirds of North America (US and southern Canada east of the Rockies). (1)
Mixedwood forests
Adults fly from April to September (only June and July in the north).
Larvae feed on roses and Impatiens.
Life Cycle
Up to 230 eggs are laid, hatching in only three to four days; overwinters as larva, likely in the fifth instar. [McGuffin 1981]
See Also
The combination of deeply serrated hindwing and black spots at apex of forewing separates E. obtusaria from other Euchlaena species.
Print References
Covell, p. 361, plate 51 #16 (2)
Works Cited
1.Assessment of species diversity in the Atlantic Maritime Ecozone
McAlpine D.F., Smith I.M. (eds.). 2010. Canadian Science Publishing (NRC Research Press). 785 pp.
2.Peterson Field Guides: Eastern Moths
Charles V. Covell. 1984. Houghton Mifflin Company.
3.North American Moth Photographers Group
4.BOLD: The Barcode of Life Data Systems