Glossy black body; blood-red, very finely and dispersedly punctured pronotum; the puncture-stripes moderately strong; interspaces without wrinkles. [Translated from the original German in Suffrian, 1858].
“Pronotum: Orange to light or deep red throughout; punctation dual, larger punctures minute to small, often coarse. Elytra: Dark brown to (usually) black throughout; with eight rows of punctures, fifth sometimes, sixth and seventh nearly always confused, latter two rows sometimes reduced; punctures as large, dense as usual, much finer at elytral apex; inner and outer rows usually distinct at apex, often clearly meeting. Prosternum: Anterior margin in male distinctly produced downward into a more or less pointed lobe; anterior margin in female produced into a more or less distinct lobe. Length: 3.2 to 4.9 mm” (White, 1968: 83).
Purshia tridentata DC. ("Pursnia tridentata"). “Beller and Hatch (1932, p. 137) record this species as mainly occurring on Salix, but also on blackberries, roses, strawberries, wild licorice, and prunes” (White, 1968).
Northern California, U.S.A. (Museum Mannerh.). [Translated from Suffrian, 1858]
USA: CA, NV, UT, ID, WA (White, 1968).