Callidoma Thomson, 1877, Opus. Ent. 8:784.
Calvescens Kinsey. Present assignment.
Campestris Huber, 1807, Vollst. Naturg. Bau- und Baumhölzer 2:285 (acc. D.T.93: 65).
Canadensis Kinsey. Present assignment.
Canescens Bassett, by Fullaway, 1911, Ann. Ent. Soc. Amer. 4: 342.
Capreae Linnaeus, 1767, Syst. Nat. ed. 12, 1(2): 919.
Capsuala Ashmead, 1885, Trans. Amer. Ent. Soc. 12: IX.
Capsula Bassett, 1881, Canad. Ent. 13: 101.
Caput-medusae Hartig, 1843, Germar Ent. Zeit. 4: 401.
Cardui Müller, 1764, Fauna Ins. Fridrichsdal: 68 (acc. D.T.93: 67).
Carnifex Hartig, 1843, Germar Ent. Zeit. 4: 406.
Carolina Ashmead. Present assignment.
Catesbaei Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XV.
Cava Weld. Present assignment.
Centaureae Förster, by Kaltenbach, 1874, Pflanzenfeinde :386.
Centricola Osten Sacken, 1861, Proc. Ent. Soc. Amer. 1: 53, 58.
Cerigera Piccioli, 1861, Bull. Accad. Aspir. Napoli: 74 (acc. D.T.93: 67).
Cerri Beyerinck, 1895, Versl. Akad. Amsterdam: 1 (acc. D.T. & K. 10: 471).
Cerricola Giraud, 1859, Verh. zoo.-bot. Ges. Wien 9: 346.
Cerriphilus Giraud, 1859, Verh. zoo.-bot. Ges. Wien 9: 354.
Championi Ashmead, 1899, Ent. News 10: 194, 195.
Chrysolepidicola Ashmead, 1896, Proc. U.S. Nat. Mus. 19: 124.
Cicatricula Bassett, 1881, Canad. Ent. 13: 101, 113.
Cincturata Kinsey. Present assignment.
Cinerea Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XIX.
Cinerosa Bassett, 1881, Canad. Ent. 13: 110.
Citriformis Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XXVIII.
Clavicornis Hartig, by Kaltenbach, 1874, Pflanzenfeinde: 669.
Clavigera Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XXVII. Also as claviger.
Clavula Osten Sacken, 1865, Proc. Ent. Soc. Phila. 4: 351.
Clavuloides Kinsey. Present assignment.
Clementinae Giraud, 1859, Verh. zoo.-bot. Ges. Wien 9: 349.
Clivorum Kinsey. Present assignment.
Cocciniae Osten Sacken, 1862, Proc. Ent. Soc. Phila. 1: 243, 247.
Coelebs Osten Sacken, 1861, Proc. Ent. Soc. Phila. 1: 61.
Collaris Hartig, 1840, Germar Ent. Zeit. 2: 190.
Compressa Fabricius, 1798, Suppl. Ent. Syst.: 213.
Compta Kinsey. Present assignment.
Concolor Kinsey. Present assignment.
Confluentus Harris, 1841, Ins. Mass. Inj. Veget. :397.
Confusa Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XVIII.
Congesta Kinsey. Present assignment.
Conglomerata Giraud, 1859, Verh. zoo.-bot. Ges. Wien 9: 344.
Conica Kinsey. Present assignment.
Conifera Ashmead, 1881, Trans. Amer. Ent. Soc. 9: XXVII.
Conifica Hartig, 1843, Germar Ent. Zeit. 4: 402.
