Life … Animals Arthropods Insects Butterflies and Moths Ypsolophidae Ypsolopha Variable Smudge species 903 observations Variable Smudge Ypsolopha ustella Field notes Supported by All 4 native plantssupport it in the US Caterpillar hosts Plants its caterpillars eat Northern Red Oak, Pin Oak, Net-leaved Willow, Least Willow 4 Close