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Photo#1322802
Fairy Moth (Adelidae) probably Cauchas sedella - Cauchas sedella

Fairy Moth (Adelidae) probably Cauchas sedella - Cauchas sedella
6 miles NW Lyons, Boulder County, Colorado, USA
May 23, 2002
Size: FW ~ 4 mm
Although this Cauchas was photographed 5 years earlier, It is not a good enough image to stand alone. However, it shows the flower of the host plant, Boechera fendleri, and, for size comparison, an newly laid egg of a pierid, either Spring White (Pontia sismybrii) or Julia Orange-tip (Anthocharis julia julia), both of whom also use this delicate little mustard as a host plant. These eggs turn orange after 24 hours or so. The reason I keep finding the Fairy Moths is because every year we check these mustards for eggs and caterpillars of these two of our three earliest spring butterflies.

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