Beetles are the most diverse order of insects and the weevils are the most diverse family of beetles. Hardly a plant in the Sonoran Desert exists that does not have a weevil of some species that has come to more-or-less specialize in consuming it. Whether this weevil is actually a specialized herbivore of cocklebur is unknown. Further evidence, such as egg-laying or a larva developing within the roots, stem or fruit might clarify the relationship. Baris interstitialis may be the same species and it has been considered as a biological control for the often weedy, cocklebur. Other Baris spp. tunnel into root systems.

Most weevils are characterized by a pronounced snout forming the anterior of the head and bearing the mouthparts. With this snout the female weevil prepares a chamber within the food plant tissue where her eggs will be deposited. Once the egg is thus implanted deep within she covers over the hole with chewed material and a saliva-glue. Now when the egg hatches the emerging grub finds itself protected from the elements and surrounded by its food.