Black-tailed
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Rhaphiomidas nigricaudis
Rhaphiomidas nigricaudis is a species of mydas fly described by Cazier in 1985. It belongs to the family Mydidae, a group of large, robust flies often mistaken for wasps. The species is known only from Arizona. Like other members of its genus, it likely exhibits the characteristic mydas fly morphology with an elongated body and clubbed antennae.