''Grossoseta johnsoni'' is a species of flat-footed flies (insects in the family

Platypezidae Platypezidae is a family (biology), family of Fly, true flies of the Taxonomic rank, superfamily Platypezoidea. The more than 250 species are Cosmopolitan distribution, found worldwide primarily in woodland habitats. A common name is flat-foote ...

References

Platypezidae Insects described in 1961 Taxa named by Edward L. Kessel {{Platypezoidea-stub