Trirhabda luteocincta

Elytra frequently metallic green, blue, purple or purple-black, infrequently vittate. Underside of abdomen dark (green) with metallic luster, densely hairy. Pronotal spots large, with metallic luster, median spot wedge-shaped. Occipital plaga metallic-green, rounded anteriorly and broadly widened posteriorly to cover entire hind edge of head (see Fig. 18 of Blake ). (Adapted from Hogue ) In the principal references for Trirhabda by Blake, Hougue and others, T. luteocincta is characterized as a coastal central to southern California species with host plants Applopappus (=Hazardia) squarrosa and Artemesia californica , the latter known by the common name California sagebrush. However, a 1982 paper by Patrick O'Brien & Peter Atsatt on the life history of T. sericotrachyla found that: Circumscriptions of Happlopappus have been revised and the species formerly known as Haplopappus venetus ssp. vernonioides and H. palmeri are now referred to as Isocoma menziesii var. vernoniodes and Ericameria palmeri , respectively. These two species are present in the coastal areas of southern California where the vast majority of T. luteocincta records occur. Note that none of the 4 host plant species mentioned above occurs beyond California (including Baja California)...so it's unclear what the host plant would be for presumed records in UT, AZ, and/or NM. [Note from A.S. on 10/28/18: I suspect records of T. luteocincta from UT, AZ, and/or NM may be mis-identified as such.]