Lipoptena mazamae, the Neotropical deer ked, is a fly from the family Hippoboscidae.

They are blood-feeding parasites of the white-tailed deer - Odocoileus virginianus in the southeastern United States and Central America, the red brocket deer - Mazama americana in Mexico to northern Argentina, and also an incidental parasite of domestic cattle, Cougars - Puma concolor, and man.

After three larval instars, a white pre-pupa which immediately forms a hard dark puparium.

When the pupa has completed its pupation, a winged adult emerges and flies in search of a suitable host.

L. mazamae are known to carry several species of the Bartonella bacterium, but it has not yet been positively proved whether they are active vectors of Bartonella infections, or just carry the bacterium as a by product of their blood feeding habits.