CENOSOMA van der Wulp, 1890: 44 (in key; full description in a subsequent fascicle, van der Wulp, 1890: 166). Type species: Cenosoma signifera van der Wulp, 1890, by subsequent monotypy of van der Wulp, 1890: 167.

sabroskyi (Guimarães, 1977).– Florida (Guimarães, 1977).
– Cenosoma sabroskyi Guimarães, 1977a: 223. Type data: holotype female (USNM). Type locality: USA, Florida, Monroe County, Cudjoe Key.

signifera (van der Wulp, 1890).– Oregon, California to Louisiana, Mexico, also Ontario and Québec, south to Florida (S&A, 1965), Mississippi, Tennessee (CNC).
– Cenosoma signifera van der Wulp, 1890: 167. Type data: lectotype female (BMNH), by fixation of Townsend, 1931a: 83 (mention of "female Ht" is regarded as a lectotype fixation; only 1 female in type series). Type locality: Mexico, Guerrero, Chilpancingo.

Subgenus OESTROPHASIA Brauer & Bergenstamm, 1889

OESTROPHASIA Brauer & Bergenstamm, 1889: 145 (also 1890: 77). Type species: Oestrophasia clausa Brauer & Bergenstamm, 1889, by subsequent designation of Townsend, 1892b: 133.

calva Coquillett, 1902.– California to Texas and Mexico, also Michigan to Massachusetts, south to Florida (S&A, 1965), Idaho, Utah, Saskatchewan, Nova Scotia (CNC).
– Oestrophasia calva Coquillett, 1902b: 109. Type data: holotype male (USNM). Type locality: USA, Arizona, Williams.

clausa Brauer & Bergenstamm, 1889.– California, Idaho, Utah, Colorado, Arizona, New Mexico (S&A, 1965), British Columbia to Manitoba (CNC).
– Oestrophasia clausa Brauer & Bergenstamm, 1889: 146 (also 1890: 78). Type data: lectotype male (NHMW), by fixation of Townsend, 1931a: 82 (mention of "male Ht" is regarded as a lectotype fixation). Type locality: USA, southern Colorado.
– Oestrophasia setosa Coquillett, 1902b: 110. Type data: holotype female (USNM). Type locality: USA, Colorado.