50D_20100416019 - Female of an Andrena sp. (Family Andrenidae) from the Jepson Prairie Reserve in Solano Co. near Dixon, CA.

50D_20100416024 - Female of an Andrena sp. (Family Andrenidae) from the Jepson Prairie Reserve in Solano Co. near Dixon, CA.

50D_20100416026 - Female of an Andrena sp. (Family Andrenidae) from the Jepson Prairie Reserve in Solano Co. near Dixon, CA.

50D_20100416028 - Female of an Andrena sp. (Family Andrenidae) from the Jepson Prairie Reserve in Solano Co. near Dixon, CA.

50D_20100416029 - Female of an Andrena sp. (Family Andrenidae) from the Jepson Prairie Reserve in Solano Co. near Dixon, CA.

20110402_7D_0037 - Female of Andrena angustitarsata (Family Andrenidae) visiting Ceanothus "Julia Phelps" in El Cerrito, CA.

20D_20080304006 - Male of Andrena angustitarsata (Family Andrenidae) from El Cerrito, CA.

40D_20080507031 - Female of Andrena angustitarsata (Family Andrenidae) on a blackberry fower in Tilden Park near Berkeley, CA.

50D_20090425027 - Female of Andrena auricoma (Family Andrenidae) visiting a Scrophularia flower from El Cerrito, CA.

40D_20080504002 - Male of Andrena cerasifolii (Family Andrenidae) from Del Puerto Cyn., Stanislaus Co., CA.

20120613_7D_3117 - Female of Andrena cerasifolii sp. (Family Andrenidae) feeding on honeydew on a manzanita leaf near Idylwild, Riverside, CA.

40D_20080313050 - Male of Andrena chalybaea (Family Andrenidae) from El Cerrito, CA.