Callipodida is an
order
Order, ORDER or Orders may refer to:
* A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
...
of
millipede
Millipedes (originating from the Latin , "thousand", and , "foot") are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derive ...
s containing around 130
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
, many characterized by crests or ridges.
Description
Callipodida are long and narrow millipedes, up to 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.
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.
Distribution
Callipodida occurs in
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...
,
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
,
west Asia
West Asia (also called Western Asia or Southwest Asia) is the westernmost region of Asia. As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenian ...
,
southern China
Northern China () and Southern China () are two approximate regions that display certain differences in terms of their geography, demographics, economy, and culture.
Extent
The Qinling–Daba Mountains serve as the transition zone between ...
and
Southeast Asia
Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
.
Classification
The living (
extant
Extant or Least-concern species, least concern is the opposite of the word extinct. It may refer to:
* Extant hereditary titles
* Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English
* Exta ...
) Callipodida are classified into three suborders, seven families, and approximately 130 species.
The genus ''
Sinocallipus'', which constitutes the suborder Sinocallipodidea, is thought to be the most primitive, and a sister group to all
other callipodans.
A fourth, extinct, suborder was described in 2019 to accommodate ''
Burmanopetalum inexpectatum'', a 99 million-year-old specimen found in
Burmese amber
Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. Th ...
.
;Suborder Callipodidea
*
Callipodidae
;Suborder Schizopetalidea
*
Abacionidae
*
Caspiopetalidae
*
Dorypetalidae
*
Paracortinidae
*
Schizopetalidae
;Suborder Sinocallipodidea
*
Sinocallipodidae
;Suborder Burmanopetalidea
*
Burmanopetalidae
References
External links
*
*
Millipede orders
{{Millipede-stub