Adobe wall biodeterioration by the Centris muralis Burmeister bee (Insecta: Hymenoptera: Apidae) in a valuable colonial site, the Capayán ruins (La Rioja, Argentina)

► Biodeterioration of earthen walls in Argentina was identified and described. ► The causal agent was the bee Centris muralis. ► Biodeterioration is a very important factor of earthen building erosion.