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Black Vine Weevils
Prevention and Control- Inspect plants regularly for adult weevils, particularly at night. Protect individual pots and greenhouse bench legs with sticky tape smeared with a non drying glue and maintain these barriers regularly. Biological control- Outdoors and undercover you can use a Beneficial Nematodes - H. bacteriophora Providing for adequate drainage around plantings near homes should help somewhat. Some success has been achieved in protecting potted plants by using entomopathogenic nematodes which attack the black vine weevil larvae. Keeping the soil moist after nematode release is important to enhance their effect. are used,
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Adults black vine weevils are wingless, dull, dark black-brown about 1/4in (9mm) long, covered in small dull yellow specks. They emerge in May or June, feeding at night. Virtually all are female each laying several eggs in soil around the host plants from late July. They feed on plant roots until the following spring when they pupate in the soil. Most adults die at the end of the season but some do overwinter. 
