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Digital Guide to Moth Identification

Geometridae 910627.00 – 7046 – Nemoria bistriaria Hübner, 1818 – Red-fringed Emerald

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Description/ Field Marks: At critical pre-emergence temperatures an intermediate green-brown form of Nemoria bistriaria will be induced with brown and green scales sprinkled across the wing in this manner. Nemoria lixaria is rarely seen north of SE Penna, and its seasonal darker form is melanic with charcoal black scales appearing along the pm. and am. lines and black shading on abdomen and wing fringes rather than the mocha brown form that appears in N. bistriaria. Given the locality and coloration there can be little doubt that this is an intermediate color form of Nemoria bistriaria, probably N. bistriaria siccifolia (in terms of Ferguson's subspecies). Neither N. mimosaria nor N. rubrifrontaria has a known seasonal color variant, and I think those are the only other two Nemoria that might be encountered in that part of Massachusetts. ~ John Gruber Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: • Nemoria bistriaria Hübner, 1818 • Aplodes brunnearia Packard, 1876 • Aplodes rubrolinearia Packard, 1873 • Geometra siccifolia Fitch, 1857 • Aplodes rubromarginaria Packard, 1876

References

Barcode of Life (BOLD) - Caution: Some specimens shown may not be sequenced. DNA barcode provides evidence of relatedness not proof of identification. Ferguson, D. C., 1985. Moths of America North of Mexico, Fascicle 18.1: p. 62; pl. 3.6-20. order or free PDF Hall et al., 2021. The Moths of North Carolina - website (identification, habitats and life history) Species Page at Block Island Moths Species Page at BugGuide.Net

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