Genus: Thaumatosoma Smith, 1865
Common name: none
Thaumatosoma may be confused with bees within the genus Hackeriapis due to the shared characteristics of postgradular grooves on T2–T3 and expanded apical flagellar segments in some Hackeriapis males (Michener 2007). Female Thaumatosoma can be differentiated from Hackeriapis by their bidentate mandible and T6 with round basolateral shoulders (Michener 2007). Male Thaumatosoma can be differentiated from Hackeriapis by the uniquely swollen scape, expanded apical flagella, and long, coarse bristles in the center of the clypeus (Michener 2007).
Thaumatosoma are known to visit flowers of plants in the families Goodeniaceae and Myoporaceae (King and Exley 1985).
Nesting behavior is unknown.
Thaumatosoma consists of two species (Michener 2007); none are known to occur in the U.S. or Canada.
There are no known invasives.
Thaumatosoma occurs throughout the southern third of Australia. They are found predominantly along the western coast as well as inland areas with desert-like conditions (Michener 2007).