Cephalastor is a small neotropical genus of potter wasps (Hymenoptera: Vespidae: Eumeninae) currently containing 14 species.
The known species are:
Cephalastor sinusiticus Garcete-Barrett (Mexico)
Cephalastor lambayeque Garcete-Barrett (Coastal Peru)
Cephalastor bossanova Garcete-Barrett (Southern Brazil)
Cephalastor estela Garcete-Barrett (Paraguay and Brazil)
Cephalastor humeralis Garcete-Barrett & Hermes (Brazil)
Cephalastor mariachi Garcete-Barrett (Mexico)
Cephalastor minarum Garcete-Barrett & Hermes (Brazil)
Cephalastor abraham Garcete-Barrett (Ecuador)
Cephalastor tupasy Garcete-Barrett (Peruvian Amazon)
Cephalastor relativus (Fox) (Surinam, Eastern Colombia, Ecuador, Bolivia and Central Brazil)
Cephalastor rufosuffusus (Fox) (Guyana, Central Brazil and Paraguay)
Cephalastor paezi Garcete-Barrett (Colombian Llanos)
Cephalastor rominae Garcete-Barrett (Paraguayan Chaco)
Cephalastor chasqui Garcete-Barrett (Eastern Bolivia and Andean Peru)
