Sexiing: males have dense hairy pads on protarsomeres 1−3 ("tarsal pads").
Color can be a tricky character:
Life Cycle
beetles are often seen in pairs, often for mate guarding
Remarks
U.S. Fish and Wildlife Service listed Cicindela ohlone and Ellipsoptera nevadica lincolniana as endangered, and Habroscelimorpha dorsalis dorsalis & E. puritana as threatened
Elaphrus spp. (<10 mm) resemble miniature tiger beetles with large embossed circular spots on elytra
Print References
Willis H.L. (1968) Artificial key to the species of Cicindela of North America north of Mexico (Coleoptera: Cicindelidae). J. Kans. Ent. Soc. 41: 303-317 (Full text)