[2] Pauropods in the order Hexamerocerata are characterized by telescopic antennae with six stalk segments, unlike all other pauropods (those in the larger order Tetramerocerata), which have antennae that are not telescopic and have only four stalk segments as adults.
[1][2] In Hexamerocerata, the sixth segment also features a sense organ shaped like a candelabra.
These tracheae take the form of two thin tubes on each side running from the base of the first pair of legs and reaching into the posterior part of the head.
[2] The mandibles in the order Hexamerocerata are strong enough to allow these pauropods to consume solid food.
The mouthparts in the order Tetramerocerata are weaker, with mandibles that are used to puncture cell walls so that the pauropod can suck out fluids.