An import from Queensland, these orange and black beetles grow to about 10mm long and can fly. In summer months, the adult beetle eats the new leaves of orchids. They then lay eggs in the soft, new stems and the larva, a soft white maggot-like grub hatches, then eats and destroys the stem and growing tip. At their worst, they will destroy all the new seasons’ growth on your orchids.
You can control by spraying an insecticide when you see them. The easier and more challenging way is to sneak up on them (there is always two of them), place your hand slowly below the leaves being eaten by the buggers and then, with your other hand, try to grab them. If you miss, they will hopefully drop into your other hand as their defence is to drop to the ground when disturbed. Now with a smile on your face, crush them!