Anoplura

( Pediculus humanus humanus ): Associated with poor hygiene and often found in the seams of clothing.

: They are highly host-specific, meaning most species associate with only one type of mammal. anoplura

( Pediculus humanus capitis ): Resides on the scalp and is common among school children. ( Pediculus humanus humanus ): Associated with poor

For further technical details on their evolutionary history, you can explore the molecular study available on BMC Evolutionary Biology . Morphological discrimination of human lice (Anoplura - PMC anoplura