HIERARCHICAL CLASSIFICATION OF THE SUBPHYLUM MYRIAPODA (LATREILLE 1802)

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This fairly standard taxonomic system is from Brusca and Brusca (2003). Although the taxonomy at this level has been quite stable, the taxonomy of the classes, especially the Diplopoda, has been and still is in flux. |
CLASS DIPLOPODA (10 ORDERS IN 2 SUBCLASSES)
- All but first 4 trunk segments fused into pairs, each diplosegment with 2 pairs of legs, ganglia and heart ostia; simple, 7-jointed antennae; maxillae fused into gnathochilarium; integument normally reinforced with calcium carbonate; gonopores opening on or near coxae of 2nd pair of legs; 1st trunk segment legless; without compound eyes; each with diplosegment covered by dorsal tergum, 2 lateral pleura, and 2-3 sterna, with various degrees of fusion; young usually hatch with 3 pairs of legs.
- Polyxenus, Glomeridesmus, Glomeris, Platydesmus, Striaria, Polydesmus, Julus, Spirobolus.
CLASS PAUROPODA (1 ORDER)
- Small; eyeless; poorly developed mouthparts including 1 pair of maxillae; branched antennae; without heart or limbs on 1st postcephalic segment, mostly without tracheae; gonopores on 3rd trunk segment; trunk usually with 11 segments, the central 9 each with 1 pair of legs; some tergal plates large, extending over 2 segments and bearing long tactile setae; integument soft, uncalcified.
- Pauropus.
CLASS CHILOPODA (5 ORDERS IN 2 SUBCLASSES)
- Elongate; dorsoventrally flattened; numerous segments, each with 1 pair of legs except 1st trunk segment, which bears one pair of large poison fangs, and last 2 segments; simple antennae, two pairs of maxillae; integument without calcium carbonate, eyes ocelli, compound or absent; poison fangs occupy undersurface of head; last 2 segments small, forming pregenital and genital segments; female with 1 ovary and 1 gonopore on genital segment, male with 1-24 testes and 2 gonopores on genital segment.
- Scutigera, Lithobius, Geophilus, Scolopendra.
CLASS SYMPHYLA (1 ORDER)
- Small; eyeless; trunk with 14 segments, the last fused to the telson; first 12 trunk segments each with 1 pair of legs, penultimate segment with cerci and 1 pair of long sensory hairs; dorsal surface with 15-22 tergal plates; antennae long, simple, thread-like; 2nd maxillae fused together; 1 pair of spiracles on head, tracheae supplying first 3 segments; 1st pair of legs short; young hatch with 6 or 7 pairs of legs; gonopores on 3rd trunk segment; soft uncalcified integument.
- Scutigerella.
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By Jack R. Holt and Carlos A. Iudica. Last revised: 02/04/2012 |