These are the flies. The mouth parts function as suctorial organs but there is a great deal of variation between different members of this order. The life cycle usually involved a complete metamorphosis. Both the adult fly and the fly larvae may be of veterinary significance.
Mosquitoes There are several important genera of mosquitoes.
Many of the numerous species can transmit significant diseases to man and animals. Included in these are such things as yellow fever, malaria, and canine heartworm. The mosquito life cycle involves eggs that are laid in water. Adult females are blood feeders while males are not. Adult females may live several months.