Callipodida

Callipodida is an order of millipedes containing around 130 species, many characterized by crests or ridges.

Callipodida
Tetracion jonesi (Abacionidae), a species from the southern United States
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Diplopoda
Infraclass: Helminthomorpha
Order: Callipodida
Pocock, 1894
Suborders

Callipodidea
Schizopetalidea
Sinocallipodidea †Burmanopetalidea

Synonyms

Lysiopetalida Chamberlin, 1943

Description

Callipodida are long and narrow millipedes, up to 100 millimetres (3.9 in) in length with 40-60 body segments. A dorsal groove is present running down the mid-line of the body, and many species are ornamented with longitudinal crests or ridges.[1][2] Sexually mature males possess a single pair of gonopods, consisting of the modified anterior leg pair of the 7th body segment, and carried concealed within a pouch.[2][3]

Distribution

Callipodida occurs in North America, Europe, west Asia, southern China and Southeast Asia.[4]

Classification

The living (extant) Callipodida are classified into three suborders, seven families, and approximately 130 species.[5] The genus Sinocallipus, which constitutes the suborder Sinocallipodidea, is thought to be the most primitive, and a sister group to all other callipodans.[6] A fourth, extinct, suborder was described in 2019 to accommodate Burmanopetalum inexpectatum, a 99 million-year-old specimen found in Burmese amber.[7]

Suborder Callipodidea
  • Callipodidae
Suborder Schizopetalidea
Suborder Sinocallipodidea
†Suborder Burmanopetalidea

References
  1. "Diagnostic features of Millipede Orders" (PDF). Milli-PEET Identification Tables. The Field Museum, Chicago. Retrieved 25 October 2013.
  2. Shelley, Rowland M. (1999). "Centipedes and Millipedes with Emphasis on North American Fauna". The Kansas School Naturalist. 45 (3): 1–16. Archived from the original on 2016-11-12. Retrieved 2013-11-14.
  3. Stoev, P.; Sierwald, P.; Billey, A. (2008). "An annotated world catalogue of the millipede order Callipodida (Arthropoda: Diplopoda)" (PDF). Zootaxa. 1706: 1–50.
  4. "Biogeography of Millipede Orders" (PDF). Milli-PEET Identification Tables. The Field Museum, Chicago. Retrieved 25 October 2013.
  5. Shear, W. (2011). "Class Diplopoda de Blainville in Gervais, 1844" (PDF). In Zhang, Z.-Q. (ed.). Animal biodiversity: an outline of higher-level classification and survey of taxonomic richness. Zootaxa. 3148. pp. 159–164. ISBN 978-1-86977-850-7.
  6. Stoev, Pavel; Enghoff, Henrik (2011). "A review of the millipede genus Sinocallipus Zhang, 1993 (Diplopoda: Callipodida: Sinocallipodidae), with notes on gonopods monotony vs. peripheral diversity in millipedes". ZooKeys. 90 (0): 13–34. doi:10.3897/zookeys.90.1291. PMC 3084490. PMID 21594105.
  7. Stoev, Pavel; Moritz, Leif; Wesener, Thomas (2019). "Dwarfs under dinosaur legs: a new millipede of the order Callipodida (Diplopoda) from Cretaceous amber of Burma". ZooKeys. 841: 79–96. doi:10.3897/zookeys.841.34991. PMC 6529722. PMID 31148918.


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