Synonyms and other taxonomic changes
Rifseria fuscotaeniaella (Chambers, 1878)
Gelechia fuscotaeniaella Chambers, 1878
* phylogenetic sequence #055450
Explanation of Names
From Latin fuscus- "dark, dusky" + taenia- "ribbon" (itself from Greek tainia ταινια) + the Latin diminutive suffix -ella
Forewing length 4.5-7 mm (Powell & Opler, 2009).(1)
Wingspan 10.5-16 mm (Hodges, 1966).
Adult: forewing white with broad brown basal band in some individuals; three dark patches along costa, increasing in size from first to third patch; top of head and anterior thorax white; top of posterior thorax brown; markings are variable, with gradations between nearly all white and dark specimens known.
Manitoba and British Columbia to eastern Colorado, Utah, Nevada, Arizona and coastal California (Powell & Opler, 2009).(1)
Adults fly from March to November in the south; June to September in the north.
Larvae are leaf miners and feed in terminals of pearly everlasting
) and cudweed
) (Powell & Opler, 2009).(1)
Related species and genera have different color and pattern on forewing (compare specimens
by SangMi Lee at MPG).
Chambers, V. T. 1878. Descriptions of new Tineina from Texas, and others from more northern localities. Bull. U.S. Geol. Geog. Surv. Territ. 4: 89
Hodges, R. W. 1966. Revision of Nearctic Gelechiidae, I. The lita
group (Lepidoptera: Gelechioidae). Proc. USNM 119(3547): 62
Powell, J. A. & P. A. Opler 2009. Moths of Western North America. University of California Press. pl.8.6m, p.91
presence in California; list
of 12 specimen records with dates and locations (U. of California at Berkeley)
presence in Wisconsin; list
with dates and location [search on genus "Rifseria"] (Lepidopterists Society Season Summary, U. of Florida)