Others will no doubt give better advice but I use sunflowers and nasturtiums to lure aphids and beetles away from my other plants. The predatory insects usually just find their way to the buffet at that point. Last year I used mint and chamomile because their said to attract predatory wasps. This year I'll add Dill and parsley, said to accomplish the same along with hoverflies.

I could probably give you a list a mile long but the easiest and best thing to do for you is to simply do a Google search using "beneficial insects" or "companion plantings" and spend as much time as you want reading. I just did another short search yesterday and one site I read is this one. Scroll down to the bottom list.
http://ourgardengang.tripod.com/companions.htm

Here's what works well here in coastal St. Pete: when my dill, fennel, & Asian mustards/cabbages flower & go to seed,they attract lots of aphids, & the ladybugs, hoverflies & lacewings soon follow & lay their eggs. IMPE, a plant w/ multitudes of aphids is a must to feed all those hungry larvae.

Another that seems a good 'nursery' plant for those beneficials is the orange milkweed that everyone grows for the Monarch butterflies.

HTH

According to Sally Scalera at UF , herbs allowed to flower are big insect attractors .
Examples are dill , coriander , basil , fennel , garlic chives, yarrow and many others listed in this link .

Dr. Russ Mizelle feels that the crape myrtle is the most important woody plant for attracting insects .
Aphids specific to crapes draw 13 different species of beneficial predatory insects .

Here is a link that might be useful: Plants That Attract Beneficial Insects