Utah State University Extension
Sap beetles are typically considered a secondary pest of corn and overripe fruits and vegetables. They are broadly identified by their small and ovular bodies and club-shaped antennae. Adult sap beetles often feed on corn silk, pollen, and tassels. Larvae feed on kernels inside the husk. This fact sheet reviews how to identify sap beetles and their hosts and damage. It also provides ideas on how to monitor for sap beetles and outlines the options for managing them.
Volesky, Nick; Schrumm, Zachery R.; and Taylor, Kalen, "Sap Beetles" (2021). All Current Publications. Paper 2245.