Stenopelmus rufinasus (weed bioagent)
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Stenopelmus rufinasus (weed bioagent) Gyllenhal, 1835 - (Azolla weevil)
This weevil is native to eastern North America and has been introduced into South Africa against the aquatic weed Azolla filiculoides. It has also spread naturally to Europe and neighbouring regions and is now found in many parts of the continent. The weevil causes considerable reductions of invasive A. filiculoides populations and related waterferns.