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Gallery

Giant salvinia with yellowing leaves due to the damage by the salvinia weevil larvae. 

Cameron Parish

Field settings
 

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Freshwater marsh in coastal Louisiana. Those beautiful ochre patches are giant salvinia dying because of the feeding damage of the salvina weevil. 

Phragmites australis die-back in Plaquemines Parish. Dead stems are the only remanents of the previous year's growth.

Bugs, weeds and other organisms

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Female scales attached to roseau cane stem, note parasitoid pupae inside. Picture by Dr. Blake Wilson.

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Salvinia weevil (Cyrtobagous salviniae). Pic. by Dr. Kat Parys.