Darcie,
I would hope a lot of them would, it just depends on the size of the larvae at the time. I would definately think any of the larger trapped species of utrics would do it.
I've gone on and on, and beaten myself half to death trying to get rid of them. Last year I just said screw the tray system and let things get drier than suggested. Luckily, I haven't seen one since. Though now i'm using trays again so we'll see what happens.
You just want to make sure that when using utrics as groundcover (aka a defense against the pests others can't get to), don't use anything super invasive or any utric that will choke your plant out.
I've also been experimenting with a top coat of coir. It seems to hold moisture, but doesn't ever really get waterlogged so I would hope this would leave the surface of the substrate a bit dried, which would help get rid of algae, which would help get rid of the larvae.
I just wish I could find something completely inorganic that was comparitive to peat.