green fly do bite and it does cause inflammation, the best form of defence is to stay on your guard with a rolled up news paper ready to swat them away. At all cost do not get sucked in by the way they look ( harmless an cute) this is not the case the little blighter's bight and it hurts. So if one lands on you kill it straight away.
fruit flies do not bite at all . sweat flies do bite .
Sand flies can bite a person anywhere on the persons body. A person can use sprays to avoid being bitten by the flies.
midges.
no. they have no teeth
dought it
Flies (and fleas) bite. Bees and wasps sting. The flies that bite include deer flies, horse flies, midges, and others. The best way to kill a horsefly when it lands on you is to watch and wait. When it first lands, it watches to see if you are going to swat at it. If you don't, it will put its head down to bite and draw blood. As soon as it moves its head, its focus is on your skin, and you can kill it much more easily.
no
Some flies bite but don't ordinarily leave marks.
No, crane flies are not poisonous. They do not have a stinger nor mouthparts that can bite. Crane flies are completely harmless.
no yes yes no
Yes
No, black flies are not poisonous. Some may bite and leave marks as they were infected, but they are not poisonous