Scraptiidae Gistel, 1848 have experienced little synthetic work worldwide and the North American fauna has had almost no attention over the past 80 years. We here provide an updated synopsis of North American Scraptiidae summarizing the taxonomic history of the group, presenting revised classificatory concepts and highlighting remaining challenges having worldwide taxonomic implications. A key is provided for all scraptiid genera of North America and the West Indies along with a key to species of the redefined genus Diclidia LeConte, 1862 north of Mexico. Species-group taxa from North America as well as all genus-group taxa for the world are cataloged. Higher-level changes are as follows: Pectotoma Hatch, 1965 is transferred to Allopodini Franciscolo, 1964; Evalces Champion, 1889 is proposed as a new synonym of Allopoda LeConte, 1866; Sphingocephalus Liljeblad, 1945 is transferred to Anaspidini Mulsant, 1856; Rhabdocnemis Franciscolo 1956 (= Rhabdanaspis Franciscolo, 1972) is proposed as a new synonym of Diclidia. We designate the following type species: Evalces dentipes Champion, 1889 for Evalces; Psilonycha campestris Fåhraeus, 1870 for Psilonycha Fåhraeus, 1870 (= Biophida Pascoe, 1860); Scraptia pallipes Melsheimer, 1846 for Canifa LeConte, 1866; Scraptia antennata Pic, 1902 for Scraptia (Trotommideomorpha) Pic, 1902. The following new combinations are proposed (previous generic placement given in brackets): Allopoda dentipes (Champion, 1889) [Evalces]; Allopoda grisea (Champion, 1889) [Evalces]; Allopoda longula (Champion, 1889) [Evalces]; Allopoda sinuatipes (Champion, 1889) [Evalces]; Diclidia bicincta (Champion, 1890) [Pentaria Mulsant, 1856]; Diclidia fuscula (LeConte, 1862) [Pentaria]. Allopoda championi Johnston, Naczi, and Gimmel, new replacement name is proposed for Evalces luteus Champion, 1889. Scraptia pallipes var. minuta Melsheimer, 1846 and Scraptia pallipes var. plagiata Melsheimer, 1846 are made new junior objective synonyms with Canifa pallipes (Melsheimer, 1846) via lectotype and neotype designations. At the species level, the following new synonyms are proposed (senior synonym given in brackets): Diclidia propinqua Liljeblad, 1918, Diclidia gilva Liljeblad, 1922, and Diclidia sexmaculata Liljeblad, 1945 [= Diclidia bicincta (Champion, 1890)]; Anthobates bicolor Liljeblad, 1918, Anthobates pallidus Liljeblad, 1918, and Diclidia inyoensis Liljeblad, 1922 [= Diclidia fuscula (LeConte, 1862)]; Diclidia greeni Liljeblad, 1918 [= Diclidia laetula (LeConte, 1858)]; Anaspis nubila LeConte, 1859 and Pentaria decolor Champion, 1890 [= Pentaria trifasciata (Melsheimer, 1845)].