Yosemitia graciella is a species of snout moth in the genus Yosemitia. It was described by Hulst in 1887. It is found in Arizona, California, Nevada, Colorado, New Mexico and Texas.
Adults are on wing from March to July.
The larvae feed on Echinocereus viridiflorus, Echinocereus polyacanthus, Coryphantha aggregaia and Sclerocactus polyancistrus. The larvae are gregarious internal feeders.
References
Yosemitia graciella Wikipedia(Text) CC BY-SA