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Species Fernaldella stalachtaria - Fernadella stalachtaria - Hodges#6421

Narraga Moth - Fernaldella stalachtaria - male Moth #07-204  Tiger? - Fernaldella stalachtaria - male Moth - Fernaldella stalachtaria - male Fernaldella - Fernaldella stalachtaria - male Fernaldella stalachtaria ? - Fernaldella stalachtaria - male Fernaldella - Fernaldella stalachtaria Fernaldella - Fernaldella stalachtaria
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Ennominae
Tribe Macariini
Genus Fernaldella
Species stalachtaria (Fernadella stalachtaria - Hodges#6421)
Hodges Number
6421
Synonyms and other taxonomic changes
Narraga stalachtaria Strecker, 1878
placed in genus Fernaldella Ferguson, 2008 (1)
Numbers
one of three species of Fernaldella in North America
Identification
Distinction from F. fimetaria is difficult as underside patterns in both vary, and upper sides are rarely photographed; genitalia are apparently similar. Images posted on internet web sites (when just underside is shown) may sometimes be misidentified (generally, if shown, the underside disc of the front wing of F. fimetaria should be a darker more even brown, and that of F. stalachtaria lighter, more yellowish, with darker cross-bands).
Upperside of F. stalachtaria is yellowish with indications of narrow dark cross bands. In F. fimetaria the upperside is more evenly brownish with yellowish markings near front edge of front wing.
It is conceivable that the two names represent color variations within a single species (?).
F. fimetaria is more wide-ranging across western North America from the Plains to near the west coast and from s. Canada to Mexico.
Range
Rocky Mountain region, Western North America (reported in literature from New Mexico, Colorado, Wyoming, and Oregon).
Internet References
Adult images of F. fimetaria and stalachtaria (Moth Photographers Group). Particularly note the pinned specimens.
Works Cited
1.The Moths of America North of Mexico, Fascicle 17.2, Geometroidea, Geometridae, Ennominae.
Douglas C. Ferguson . 2008. The Wedge Entomological Research Foundation.