The terrestrial immature stages of the Chilean horse fly, Protodasyapha
(Protodasyapha) hirtuosa (Philippi), are described. P.(P.)
hirtuosa resembles Ectenopsis vulpecula Macquart and
Caenoprosopon trichocera (Bigot) from Australia, and Esenbeckia
delta Hine from North America, in both the larval and pupal stages. Some
characters that are shared between these species are unique and provide
evidence of their monophyletic origin. Larvae of P. hirtuosa were
found 3-5 below of the soil surface and associated with larvae of
Coleoptera, Lepidoptera and Diptera.
