Most of the Hydrophilidae or water beetles are to small to bite, but the larger species might bite you, like beetles from the genus Dytiscus.
YES
Yes
they bite when feel threatened.
No, fire beetles are a type of beetle that does not bite. They are named as such because they are attracted to fire and need it to breed.
No. Beetles don't bite and they are not poisonous.
Black carpet beetles don't bite or sting humans, so they're not harmful in that way. They are harmful to your home and possessions though. The larvae of these beetles will eat through the carpet, the padding on furniture, and fabrics such as wool and silk.
Yes, all of the subfamily Dynastinae will bite when cornered
Spiders, grasshoppers, beetles, and etc.
I caught and played with these beetles when I was a kid. I do not remember if I ever got bitten by them.
Eastern velvet ants, mutillid wasps, red velvet ants, red spotted ant mimic spiders, signate lady beetles, and scarlet malachite beetles are all black and red bugs. These bugs are also native to the Phoenix area.
Some are omnivores, eating both plants and animals. Species like the Leaf Beetle, Longhorn Beetles and Weevils feed on only plants, whereas species such as Ground Beetles and Rove Beetles are carnivores.