Spirobolida
Encyclopedia
Spirobolida is an order
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

 of "round-backed" millipede
Millipede
Millipedes are arthropods that have two pairs of legs per segment . Each segment that has two pairs of legs is a result of two single segments fused together as one...

s. Its members are distinguished by the presence of a "pronounced suture that runs "vertically down the front of the head". Most of the species live in the tropics
Tropics
The tropics is a region of the Earth surrounding the Equator. It is limited in latitude by the Tropic of Cancer in the northern hemisphere at approximately  N and the Tropic of Capricorn in the southern hemisphere at  S; these latitudes correspond to the axial tilt of the Earth...

, and many are brightly coloured.

The following families are included:
  • Allopocockiidae
  • Atopetholidae
  • Floridobolidae
  • Hoffmanobolidae
  • Messicobolidae
    Messicobolidae
    The family Messicobolidae is one of the smaller families of millipedes in the Order Spirobolida . In general appearance, messicobolids are medium to large size spirobolids and are often brightly colored. Messicobolids occur in mountainous regions of Mexico, Guatemala, Honduras and El Salvador...

  • Pseudospirobolellidae
  • Rhinocricidae
  • Spirobolellidae
  • Spirobolidae
    Spirobolidae
    Spirobolidae is a family of millipedes, a class of many-legged invertebrate. The family consists of several genera with numerous species, and is communly divided into subfamilies Spirobolinae and Tylobolinae.-Genera:* Arctobolus Cook, 1904...

  • Typhlobolellidae
  • Pachybolidae
  • Trigoniulidae
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