Leptomonas mirabilis Roubaud 1908 in a Central American Blowfly*

SYNOPSIS. The isolation of a culture of Leptomonas mirabilis from the fly Cynomyopsis cadaverina from Guatemala shows that this flagellate is not a stage of Herpetomonas muscarum. It is characterized by giant forms that reach 200 μ in length. All records of giant leptomonads from flies are reviewed. This species was established in culture only by the addition of mosquito extract to the medium. Division of the giant flagellates appears to occur by equal binary fission.