MPG (species pages only) MPG (entire website) Entire Web

Digital Guide to Moth Identification

Geometridae 91a1083 – 6651   Lycia ursaria (Walker, 1860)              Stout Spanworm

Photographs are the copyrighted property of each photographer listed. Contact individual photographers for permission to use for any purpose.

© Nolie Schneider Large Map & Chart Report Errors About Maps

Larva and Host Plants: Host familiy: Betulaceae Cornaceae Ericaceae Fagaceae Malvaceae[Tiliaceae] Oleaceae Rosaceae Salicaceae Sapindaceae Ulmaceae.  Host genera: Acer Alnus Amelanchier Betula Corylus Cornus Crataegus Fraxinus Ostrya Malus Physocarpus Populus Prunus Quercus Salix Sorbus Tilia Ulmus Vaccinium.  Notes: polyphagous on trees & shrubs (Forbes 1948).  (Shropshire & Douglas 2025) Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: ursaria (Walker, 1860) (Biston) - MONA 1983: 6651

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. Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 28.32m; p. 211. 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 BugGuide.Net Species Page at E. H. Strickland Museum Species Page at Mass Moths Species Page at iNaturalist

© Cindy Mead © Doug Macaulay © Nolie Schneider © Jason Dombroskie © Nolie Schneider

LG – © Jim Troubridge 38mm – © Jim Vargo

© Canadian National Collection LG © Canadian National Collection LG © Canadian National Collection LG © John G. Franclemont CUIC © Jane & John Balaban LG © Jane & John Balaban LG © Jane & John Balaban LG © Tom Bentley

Moth Photographers Group  at the  Mississippi Entomological Museum  at the  Mississippi State University

Send suggestions, or submit photographs to Webmaster — Moth Photographers Group

Database design and scripting support provided by Mike Boone