''Protoplasa'' is a genus of primitive crane flies in the family

Tanyderidae Tanyderidae, sometimes called primitive crane flies, are long, thin, delicate flies with spotted wings, superficially similar in appearance to some Tipulidae, Trichoceridae, and Ptychopteridae. Most species are restricted in distribution. The ...

. There is one described species in ''Protoplasa'', ''P. fitchii''.

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Further reading