Genus Asca von Heyden

Asca von Heyden, 1826: 610 .

Type species: Gamasus aphidioides Fabricius, 1805, by original designation (= Acarus aphidioides Linnaeus, 1758).

Ceratozercon Berlese, 1913: 204 . Type species: Zercon bicornis Berlese, 1887 (not Gamasus (Sejus) bicornis Canestrini & Fanzago 1876), by original designation (= Acarus aphidioides L., 1758).