@article {696, title = {Foraging activity of the solitary Andean bee, Anthophora walteri (Hymenoptera: Apidae, Anthophorini)}, journal = {Revista Colombiana de Entomolog{\'{\i}a}, volume = {32}, year = {2006}, chapter = {73-76}, author = {Gonzalez, V.H. and Mantilla, B. and Palacios, E.} }