Seed-head-weevil
Guides
Bangasternus
Bangasternus is a genus of true weevils (Curculionidae) comprising small, dark-colored species used as biological control agents against invasive knapweeds and starthistles (Centaurea spp.). Adults are typically 4 millimeters long, dark gray, and hairy. The genus is notable for its host specificity to Centaurea species, with larvae developing within flower heads where they consume developing seeds. Several species have been introduced to North America for biocontrol purposes, including B. fausti and B. orientalis.