Family Henicopidae Pocock, 1901

The family Henicopidae is distinguished from Lithobiidae, the other currently widely recognized family of Lithobiomorpha, except Anopsobiidae, by the absence of spurs at the distal ends of most of the podomeres (present in Lithobiidae) and the presence of a distal, acute triangular spine on the tibiae of at least the first 11 pairs of legs (absent in Lithobiidae). The male gonopods of henicopids have 3 or 4 articles and end in a long filament, whereas in lithobiids the male gonopods are blunt and 1- or 2-articled. For diagnostic characters separating Henicopidae and Anopsobiidae, see Anopsobiidae, below.