PARADIDYMA Brauer & Bergenstamm, 1891: 78 (also 1892: 382). Type species: Didyma validinervis van der Wulp, 1890, by monotypy [Neotropical].
ATROPHOPODA Townsend, 1891b: 373. Type species: Atrophopoda singularis Townsend, 1891, by original designation.
CERATOMYIELLA Townsend, 1891b: 379. Type species: Ceratomyiella conica Townsend, 1891, by original designation.
LACHNOMMA Townsend, 1892a: 103. Type species: Lachnomma magnicornis Townsend, 1892 (= Atrophopoda singularis Townsend, 1891), by original designation.
ATROPHOPALPUS Townsend, 1892e: 130. Type species: Atrophopalpus angusticornis Townsend, 1892, by original designation.
PHYTOADMONTIA Townsend, 1916a: 626. Type species: Admontia setigera Coquillett, 1904, by original designation.
MICROMINTHO Townsend, 1919c: 554. Type species: Micromintho melania Townsend, 1919, by original designation.
METALLICOMINTHO Townsend, 1919c: 555. Type species: Metallicomintho abdominalis Townsend, 1919 (= Micromintho melania Townsend, 1919), by original designation.

affinis Reinhard, 1934.– British Columbia, California to Massachusetts, south to Mexico and Florida (S&A, 1965), Montana, Ontario, Québec (CNC).
– Paradidyma affinis Reinhard, 1934d: 35. Type data: holotype male (USNM). Type locality: USA, Texas, College Station.

angusticornis (Townsend, 1892).– Georgia, Florida (S&A, 1965).
– Atrophopalpus angusticornis Townsend, 1892e: 131. Type data: holotype male (SEMK) (Townsend, 1939b: 176, cited holotype female in USNM, in error). Type locality: USA, South Florida (Inverness, Florida according to Townsend, 1939b: 176).

apicalis Reinhard, 1934.– Arizona, Mexico, Guatemala, Texas, North Carolina, Florida (S&A, 1965), California (CNC).
– Paradidyma apicalis Reinhard, 1934d: 33. Type data: holotype male (USNM). Type locality: USA, Texas, College Station.

aristalis Reinhard, 1934.– Arizona, New Mexico (S&A, 1965), Texas (CNC).
– Paradidyma aristalis Reinhard, 1934d: 28. Type data: holotype male (USNM). Type locality: USA, New Mexico, Animas Park, 6500 feet.

bicincta (Reinhard, 1934).– California to Texas and Arkansas, south to Mexico (S&A, 1965).
– Ceratomyiella bicincta Reinhard, 1934d: 13. Type data: holotype male (USNM). Type locality: USA, Texas, College Station.

cinerescens Reinhard, 1934.– Utah (S&A, 1965), California, Mexico, Texas (CNC).
– Paradidyma cinerescens Reinhard, 1934d: 26. Type data: holotype male (USNM). Type locality: USA, Utah, Promontory Point.

conica (Townsend, 1891).– Kansas and Illinois to New York, south to Texas and Georgia (S&A, 1965), Florida (FSCA).
– Ceratomyiella conica Townsend, 1891b: 380. Type data: holotype male [not female as published] (SEMK). Type locality: USA, Illinois, Carlinville.

crassiseta Reinhard, 1934.– Arizona, New Mexico, Mexico (Chihuahua) (S&A, 1965), Texas (CNC).
– Paradidyma crassiseta Reinhard, 1934d: 27. Type data: holotype male (USNM). Type locality: Mexico, Chihuahua, Sánchez.

melania (Townsend, 1919).– Alberta, California to New England and Florida (S&A, 1965), Tennessee (CNC).
– Micromintho melania Townsend, 1919c: 555. Type data: holotype male (USNM). Type locality: USA, Arizona, Globe Hills, 3300 feet (on foliage of Thurberia).
– Metallicomintho abdominalis Townsend, 1919c: 555. Type data: holotype female (USNM). Type locality: USA, Arizona, Castle Butte, 5200 feet.
– Metachaeta cinerosa Reinhard, 1923: 268. Type data: holotype male (USNM). Type locality: USA, Texas, College Station.
– Wagneria distincta Curran, 1928a: 49 (nomen novum for cinerosa Reinhard, 1923). Note: Curran (1928a: 49) considered Phoricheta Rondani, 1861, to be a synonym of Wagneria Robineau-Desvoidy, 1830, thereby making cinerosa Reinhard, 1923, a junior secondary homonym of Phorichaeta cinerosa Coquillett, 1902.

neglecta (West, 1925).– Iowa, New York (S&A, 1965).
– Eulasiona neglecta West, 1925: 125. Type data: holotype female (CUI). Type locality: USA, New York, Ithaca.

neomexicana Reinhard, 1934.– Arizona, New Mexico, ?Idaho (S&A, 1965).
– Paradidyma neomexicana Reinhard, 1934d: 23. Type data: holotype male (USNM). Type locality: USA, New Mexico, Las Vegas.

obliqua Reinhard, 1934.– Washington and Idaho, south to California and Texas (S&A, 1965).
– Paradidyma obliqua Reinhard, 1934d: 22. Type data: holotype female (USNM). Type locality: USA, Idaho, Salmon River Crossing.
– Paradidyma retracta Reinhard, 1934d: 26. Type data: holotype male (USNM). Type locality: USA, Utah, Smithfield.

petiolata Reinhard, 1934.– Iowa to Michigan to New Jersey and Virginia, also Georgia (S&A, 1965), West Virginia (WVU).
– Paradidyma petiolata Reinhard, 1934d: 39. Type data: holotype male (USNM). Type locality: USA, Indiana, Lafayette.

reinhardi Wood, 1998.– New Jersey, Mississippi (S&A, 1965).
– Ceratomyiella orbitalis Reinhard, 1934d: 16 (junior secondary homonym of Paradidyma orbitalis Coquillett, 1904). Type data: holotype male (USNM). Type locality: USA, New Jersey, Hammonton.
– Paradidyma reinhardi Wood in O'Hara & Wood, 1998: 771 (nomen novum for orbitalis Reinhard, 1934).

setigera (Coquillett, 1904).– California, Arizona (S&A, 1965), Utah, New Mexico, Texas, Illinois (CNC).
– Admontia setigera Coquillett in Baker, 1904: 36. Type data: holotype female [abdomen missing] (USNM). Type locality: USA, California, San Mateo County, Stanford University.

singularis (Townsend, 1891).– Montana to Massachusetts, south to California, Mexico, and Florida (S&A, 1965).
– Atrophopoda singularis Townsend, 1891b: 374. Type data: lectotype female (SEMK), by fixation of Townsend, 1939b: 177 (mention of "Ht female" is regarded as a lectotype fixation). Type locality: USA, Illinois, Carlinville.
– Lachnomma magnicornis Townsend, 1892a: 104. Type data: holotype male (not located in SEMK, apparently lost). Type locality: USA, New Mexico, Las Cruces.