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Digital Guide to Moth Identification

Geometridae 91a1405 – 6797   Ennomos magnaria Guenée, [1858]              Maple Spanworm

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Larva and Host Plants: Host familiy: Aquifoliaceae Betulaceae Fagaceae Hamamelidaceae Juglandaceae Malvaceae[Tiliaceae] Myricaceae Oleace..  Host genera: Acer Alnus Betula Carya Castanea Crataegus Comptonia Fagus Fraxinus Ilex Juglans Liquidambar Malus O...  Host extended: twig mimics (Powell & Opler 2009); many woody shrubs & trees (Wagner 2005); polyphagous on trees and...  (Kimberley & Douglas 2025) Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: magnaria Guenée, [1858] (Ennomos) - MONA 1983: 6797 ssp. a. magnaria Guenée, [1858] (Ennomos)  lutaria Walker, 1866 (Ennomos) ssp. b. ochreatus Hulst, 1898 (Ennomos)

References (Caution: DNA barcoding at BOLD provides evidence of relatedness, not proof of identification; some BOLD specimens shown may not be sequenced.)

Barcode of Life (BOLD) - Caution: Identifications often erroneous; DNA barcode provides evidence of relatedness, not proof of identification; many specimens not sequenced. Hall et al., 2021. The Moths of North Carolina - website (identification, habitats and life history) Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 29.30m; p. 215. Book Review and ordering Shropshire, K.J. & D.W. Tallamy, 2025. Lepidoptera of North America, north of Mexico: an annotated list containing geographic ranges and host-plant records. ZooKeys, 1261: 101-113; Suppl. 1. (PDF or read online) Species Page at Block Island Moths Species Page at BugGuide.Net Species Page at E. H. Strickland Museum Species Page at Mass Moths Species Page at iNaturalist Species page at Moths of North Dakota.

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