Genus Ceratoppia Berlese, 1908

Type species: Notaspis bipilis Hermann, 1804, p. 7.

Diagnosis. Adults of the genus Ceratoppia are unique among the Peloppiidae in having the following combination of character states: chelicerae chelate–dentate; sejugal apodeme conspicuous, straight; legs heterotridactylous; lamellae parallel with thin, projecting, well defined cusps; bothridial setae elongate, typically setiform (clavate in C. clavisensillata); notogaster rounded; two or three pairs of posterior notogastral setae often prominent; dorsophragma and pleurophragma absent; pedotecta I and II well–developed; dorsal side of pedotecta I with prominent blade–like tooth extending anteriorly; lateral ridge extending from base of acetabula I to rostrum; humerosejugal porose areas absent; apodeme IV transverse, curving around genital plate, with furrow and minitectum present anteriorly, incomplete adjacent to genital plate; six pairs of genital setae; three pairs of adanal setae of which ad 1 and ad 2 subequal in shape; palp setal formula 0–1–2–3–9(1); acm closely associated with solenidion on palptarsus; axillary saccule of subcapitulum absent; porose areas dorsolateral and antiaxial on femora of all legs, and trochanters III, IV.