Tehama is a genus of moths of the Crambidae family. It contains only one species, Tehama bonifatella, the western lawn moth, which is found in Greenland and North America, where it has been recorded from Alberta, British Columbia, California, Colorado, Labrador, Manitoba, Nevada, Quebec and Washington. The habitat consists of grasslands. The wingspan is 21-23 mm. The forewings are yellow fuscous with dark brown areas and a terminal line consisting of a row of dark brown dots. The hindwings are smoky brown. Adults are on wing from May to June.