Bangasternus

Gozis, M. des., 1882

Species Guides

1

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

Pronunciation

How to pronounce Bangasternus: //bæŋ.ɡəsˈtɜr.nəs//

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Distribution

Native to southern Europe and the Middle East. Introduced to the United States, with established in the Pacific Northwest (Oregon) since the 1980s.

Host Associations

  • Centaurea solstitialis - yellow starthistle; primary target for B. orientalis
  • Centaurea maculosa - spotted knapweed; target for B. fausti
  • Centaurea diffusa - diffuse knapweed; target for B. fausti
  • Centaurea virgata ssp. squarrosa - squarrose knapweed; target for B. fausti, minor spillover for B. orientalis
  • Centaurea calcitrapa - sulfur starthistle; minor spillover for B. orientalis

Ecological Role

agent for Centaurea weeds. Larvae reduce seed production by consuming developing seeds within flower . Expected to achieve higher densities and greater impact in introduced ranges due to absence of natural and .

Human Relevance

Intentionally introduced to North America as a biocontrol agent for noxious weeds. specificity testing has demonstrated safety to native plants and crop .

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