Acmaeodera scalaris Mannerheim.

Arizona, Santa Cruz Co., Pajarito Mts., Sycamore Canyon: on flowers Xanthisma sp., 31°25′55″N, 111°11′18″W, 02-IX-2017; on flowers of Pseudognaphalium sp. ( Asteraceae), AZ 289, Mile 7, Calabasas Group Camp, 31°23′20″N, 111°02′59″W, 02-IX-2017; Cochise Co.: on flower Evolvulus arizonicus, near Benson, Barrel Cactus Ridge, 31°57′19″N, 110°20′41″W, 04-IX-2017 ; on flowers Heterotheca subaxillaris (Lam.) Britton & Rusby (Asteraceae), Stateline Road, just W Arizona-New Mexico border, 31°50′28″N, 109°02′56″W, 03-IX-2017, all MLRC .