[1][2] Members of the genus are pollinators of palms in the genera Syagrus, Oenocarpus and Butia, with adults living in inflorescences and larvae feeding on developing fruits.

After hatching, larvae migrate to the base of the female flower, drilling a hole into the developing fruit.

Starting on the second instar, larvae acquire the grub-like, cylindrical and C-shaped body characteristic of other Curculionidae.

[5] Adults Anchylorhynchus visit male and female flowers of several palm species in the genera Syagrus, Oenocarpus and Butia.

[5] The first observation about natural history of Anchylorhynchus was published by Faust, who described A. burmeisteri from specimens collected from palms in Argentina.

[6] Gregório Bondar made most of the subsequent observations, recording host plants for many species.

More recently, the full life cycle of A. eriospathae has been described, showing that larvae feed on developing seeds and adults on pollen.