Notes on the taxonomy and biology of Dicerca Eschscholtz, with a description of the male Dicerca cajonensis Knull (Coleoptera: Buprestidae)

The "tenebrosa group" of Dicerca Eschscholtz with its species: D. tenebrosa tenebrosa (Kirby), D. tenebrosa knulli Nelson, D. crassicollis LeConte, D. sexualis Crotch, D. lugubris LeConte, D. punctulata (Schönheer), D. dumolini (Laporte and Gory), and D. tuberculata (Laporte and Gory) is assigned to the subgenus Argante Gistel. The biology and relationships of Dicerca cajonensis Knull are discussed, and the male is described.