Asphondylia apicata (Diptera: Cecidomyiidae)
Creosote Bush Gall Midge
Death Valley National Park, Inyo County, California
March 22, 2008

Midge gall on creosote bush (Larrea tridentata). There's also a Contarinia sp. gall (two clasping leaves) behind the Asphondylia apicata gall.