Six weeks ago I moved into a new place in Sydney and immediately set about planting flowers raised from seed in newly dug garden beds. Everything is growing, but there's some pest damage that's affected a good portion of the less mature plants. I'd just like some help identifying the actual threats from the various insects I've spotted during the night, as well as some advice in dealing with them separately or collectively. Apologies for the poor focus in some of these photos - difficult to resolve image quality under a floodlight on such small subjects. Click to enlarge for some of the bugs that are harder to spot.
Damage:
Insects:
Dahlia Pompon
Zinnia
Dahlia Pompon
Tomato [centre bottom along the stem line]
There's also some whitefly on the undersides of my hollyhock leaves.