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For Insects, Spiders & Their Kin
For the United States & Canada
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Order Spirostreptida

Millipede - Cambala annulata Small, long, thin Millipede with more than 40 segments and slightly clubbed antennae. - male Crested Millipede - Cambala Centipede sp? - Orthoporus Millipede found near the US-Mexico border - Orthoporus Orthoporus sp. - O. ornatus or O. texicolens? - Orthoporus millipeded - Orthoporus Unknown Millipede - Orthoporus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Myriapoda (Myriapods)
Class Diplopoda (Millipedes)
Order Spirostreptida
12 families worldwide
3 families in North America
Up to 28 cm
Large cylindrical millipedes found mainly in the tropics. There is only one pair of gonopods (sex organs). (1)
Snake-like body. Eyes usually present. Dorsal groove mainly absent except in some Cambalidae. Paranota absent. 30-90 segments.
This order includes the world's largest millipedes, approaching 28cm (2)
In the southwestern US millipedes of the genus Orthoporus often congregate in large numbers. Three species occur in states adjacent to Mexico. (1)
Internet References
Works Cited
1.Spiders and Their Kin: A Golden Guide from St. Martin's Press
Herbert W. Levi, Lorna R. Levi, Nicholas Strekalovsky. 2001. St. Martin's Press.
2.Centipedes and Millipedes, with an Emphasis on North American Fauna
Rowland M. Shelley. 1999. Emporia State University.