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Digital Guide to Moth Identification

Geometridae 91a0675 – 7085   Mesothea incertata (Walker, [1863] 1862)              Day Emerald

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Larva and Host Plants: Host familiy: Betulaceae Elaeagnaceae Ericaceae Grossulariaceae Myricaceae Rhamnaceae Rosaceae Salicaceae.  Host genera: Alnus Amelanchier Betula Ceanothus Comptonia Crataegus Fragaria Geum Myrica Populus Potentilla Prunus Ribes Salix Shepherdia Spiraea Vaccinium.  Notes: polyphagous- "presumably many other woody plants" (Wagner et al 2001); variety of woody and herbaceous broadleaved angiosperms (Powell & Opler 2009); .  (Shropshire & Tallamy 2025 [accessed 6xii2025]) Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: incertata (Walker, [1863] 1862) (Nemoria) - MONA 1983: 7085 ssp. a. incertata (Walker, [1863] 1862) (Nemoria)  oporaria (Zeller, 1872) (Nemoria) ssp. b. viridipennata (Hulst, 1896) (Eucrostis)  marinaria (Strecker, 1899) (Thamnonoma)

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. Ferguson, D. C., 1985. Moths of America North of Mexico, Fascicle 18.1: p. 127; pl. 4.84-91. order or free PDF Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 31.25m; p. 221. 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

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