[Millipedes] Third body segment [Centipedes] Last body segment [Trait] 
Reproductive openings
L e g s
L o c o m o t i o n
F e e d i n g
S p i r a c l e s
R e p r o d u c t i v e o p e n i n g s
R e p r o d u c t i v e b e h a v i o r