Synonyms and other taxonomic changes
Microtheoris ophionalis (Walker, 1859)
Rhodaria ophionalis Walker, 1859
Botis nasonialis Zeller, 1873
species are found in America north of Mexico. (1)
Forewing length 5.5-7 mm. (3)
Powell & Opler (2009) states "The wing colors vary from dark ochreous brown or rust brown with well-defined subterminal line, to pale tan with brown subterminal lines, and spring moths are darker than summer individual." (3)
Across southern Canada, the United States, Mexico to South America. (3)
Adults fly May through October but earlier in southern areas.
Powell & Opler (2009) states "Despite its enormous geographical range and abundance in collections, the larval biology of Microtheoris ophionalis
is unknown." (3)
Adults do come to lights but most specimens are taken during the day. (3)
Powell, J.A. & P.A. Opler, 2009. Moths of Western North America
. University of California Press. p. 170; pl. 21, fig. 36. (3)
Munroe, E. G. 1961: Synopsis of the North American Odontiinae, with descriptions of new genera and species (Lepidoptera: Pyralidae). – Memoirs of the Entomological Society of Canada, Ottawa 93 (24): 14-15, figs 12-16. (5)
Walker, F. 1859 b: Pyralides. – List of the Specimens of Lepidopterous Insects in the Collection of the British Museum, London 17: 316.
Zeller, P. C. 1873: Beiträge zur Kenntniss der nordamericanischen Nachtfalter, besonders der Microlepidopteren. – Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien 23: 209, 210, pl. 3 fig. 6.