This is the smallest Cryptops in Britain, rarely reaching 30 mm. However, it is easily confused with immature specimens of the larger C.anomalans and C.parisi. C.hortensis can be readily distinguished from all known species of Cryptops by the presence of a deep groove on the underside of the prefemur. Examination of the tibial and tarsal combs of the last legs (which comprise widely spaced teeth in C.hortensis) will also differentiate the species.