This Lordotus bee fly is on Alkali Goldenbush at Sentenac Cienega. Its wing venation and dark markings on the wing are very similar to Lordotus gibbus, Fig 290 in Hull's Beeflies of the World, 1973. It is not as golden as the L. gibbus on BugGuide,#464401, but it does have orange hairs fringing the thorax. It also has the black stripe and hairs across one of the lower abdominal segments and seemingly some kind of a white line down the middle. Interesting, both images were taken on 11 Oct 2010, one in eastern AZ and ours in Anza-Borrego near Scissors Crossing.