Tetramerocerata

Diagnosis follows Scheller (2008: 4^{[bib]1042[/bib]}; 2011: 498^{[bib]1067[/bib]}):

Pauropoda with a 4-segmented antennal stalk, not telescopic; antennal branches projecting from article IV; ventral antennal branch s with two flagella, at least one globulus and one seta; temporal organs irregularly oval, at least the central part flattened; margins not or only partly elevated. Trunk with 6 entire or partly divided tergites. No tracheae. One rudimentary pair of legs on the first trunk segment; adults with 10 pairs of walking legs at most; developmental stages with 3, 5, 6, (7), 8, 9 and 10 pairs of legs.