Black Vine Weevils in my house

kuepper

Also posted this in greenfinger section

A couple of weeks ago I found a few of these in my livingroom and had them id'd by the natural history museum. I've since found about about 7 or 8 every day but only on carpets, curtains and window sill, never on plants, and usually at night or in morning. I've checked all my houseplants and can only see possible damage on 3 of them- a Mother in law's tongue, a spider plant and a ponytail palm - though in last case it could be some sort of mite. Having read about life cycle, i'm at a loss to understand where they are coming from, besides the limited leaf damage all my houseplants look healthy, the only 'death' i've had recently was of a prayer plant whose leaves had curled inwards which i'd attributed to another cause and certainly no sign of insects or grubs in the pot. I don't know where these weevils are during the day, if I knew i could probably use insecticide or physically destroy them. Obviously i'm worried they are laying eggs that could hatch as grubs eating roots of and killing my houseplants next year. has anyone any experience or suggestions as to what to do?

Rain_Shadow

from the wiki page

The soil dwelling grubs can be controlled using parasitic nematodes, for example Steinernema kraussei and Heterorhabditis bacteriophora, which can be bought from some garden centres and by mail order./COLOR][/SIZE][SIZE=2][COLOR=#0066cc]4[/COLOR][/SIZE][SIZE=2][COLOR=#0066cc They are simply mixed with water, and watered onto the soil.
Adult weevils can be controlled by using sticky barriers on the trunks of affected plants, as the weevils return to the soil each day.
Adults can also be manually removed from plants at night when they can be found feeding on leaf edges. Use only a dim torch or candlelight to search by, as they will drop to the ground if startled by bright light.
Adults may also be controlled using the fungus Beauveria bassiana, which is a biocontrol.

kuepper

I've been doing the night watch and catching up to 4 beetles, but can't find any sign of the grubs or beetles in the compost,

Hoploz

I think, unless they have particular sentimental value, I'd be dumping all the house plants. Yuk.