| − | '''Lice''' are a family of parasitic insects which feed on mammalian[[blood]]. They are known to transmit a range of diseases. Head lice are the most commonly encountered by humans, and are distinguished by their lateral flattening and sucking mouthparts. | + | '''Lice''' are a family of parasitic insects which feed on mammalian [[blood]]. They are known to transmit a range of diseases. Head lice are the most commonly encountered by humans, and are distinguished by their lateral flattening and sucking mouthparts. |