PhaceHa ramosissima (Hydrophyllaceae), in Tuolumne and Nevada counties, California; in Montana, Braun (1921a) listed
Lappula floribunda (Boraginaceae) as a possible host. Two adults were reared from Sambucus stick "trap nests" (Parker and Bohart, 1966) by Parker in January 1966. The 18-inch sticks were placed in the ground at Craters-of-the-Moon National Monument, Idaho, in December 1964, by D. S. Horning, who suggests (in litt.) that
Phacelia heterophylla or
P. leucophylla may be a host there
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