Orthomorpha

Orthomorpha is a genus of millipedes in the family Paradoxosomatidae containing approximately 50 species distributed in Southeast Asia.

Orthomorpha
Orthomorpha picturata
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Diplopoda
Order:
Polydesmida
Family:
Paradoxosomatidae
Genus:
Orthomorpha

Type species
Orthomorpha beaumontii
(Le Guillou, 1841)
As Polydesmus beaumontii
Species

c. 50 (see text)

Native range of Orthomorpha

Description

Species of Orthomorpha possess 20 body segments and range from 15–50 mm long as adults. They range from 1.1–3.1 mm in body width, with prominent paranota (lateral keels) extending the width to 1.5–6.7 mm. Base coloration varies from brown to black, with brightly colored paranota and markings in various shades of yellow, orange, and brown, which becomes fainter in alcohol-preserved specimens. Some species have prominent bumps or "tubercles" on their dorsal metatergal segments.[2]

Distribution

Orthomorpha species range from Myanmar in the west, through the entire Indochinese Peninsula, to Lombok, Indonesia.[2] The species O. coarctata, (also known as Asiomorpha coarctata) has been widely introduced by humans in tropics around the world.[3]

Species

The genus was revised by Likhitrakarn, Golovatch & Panha in 2011, who described several new species and assigned two to the new genus Orthomorphoides, yielding a total of 51 named species of Orthomorpha.[2] Three more species from Laos were described in 2014.[4]

Orthomorpha alutaria Likhitrakarn, Golovatch & Panha, 2010

Orthomorpha arboricola (Attems, 1937)
Orthomorpha asticta Likhitrakarn, Golovatch & Panha, 2010
Orthomorpha atypica Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha baliorum Golovatch, 1995
Orthomorpha banglangensis Golovatch, 1998
Orthomorpha beaumontii (Le Guillou, 1841)
Orthomorpha beroni Golovatch, 1997
Orthomorpha bipunctata (Sinclair, 1901)
Orthomorpha butteli Carl, 1922
Orthomorpha cambodjana (Attems, 1953)
Orthomorpha coarctata (De Saussure, 1860) (Alternately known as Asiomorpha coarctata)
Orthomorpha communis Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha conspicua (Pocock, 1894)
Orthomorpha crucifer (Pocock, 1889)
Orthomorpha elevata Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha enghoffi Likhitrakarn, Golovatch & Panha, 2010
Orthomorpha flaviventer (Attems, 1898)
Orthomorpha fluminoris Hoffman, 1977
Orthomorpha francisca Attems, 1930
Orthomorpha fuscocollaris Pocock, 1895
Orthomorpha gladiata Likhitrakarn, Golovatch, & Panha, 2014
Orthomorpha glandulosa (Attems, 1937)
Orthomorpha horologiformis Golovatch, 1998
Orthomorpha hydrobiologica Attems, 1930
Orthomorpha insularis Pocock, 1895
Orthomorpha isarankurai Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha karschi (Pocock, 1889)
Orthomorpha latiterga Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha lauta Golovatch, 1998
Orthomorpha melischi Golovatch, 1997
Orthomorpha mikrotropis Attems, 1898
Orthomorpha murphyi Hoffman, 1977
Orthomorpha parasericata Likhitrakarn, Golovatch & Panha, 2010
Orthomorpha paviei Brölemann, 1896
Orthomorpha picturata Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha pterygota Golovatch, 1998
Orthomorpha rotundicollis (Attems, 1937)
Orthomorpha scabra Jeekel, 1964
Orthomorpha sericata Jeekel, 1964
Orthomorpha similanensis Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha spiniformis Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha subelevata Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha suberecta Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha suberectoides Likhitrakarn, Golovatch, & Panha, 2014
Orthomorpha subkarschi Golovatch, 1998
Orthomorpha subsericata Golovatch, 1998
Orthomorpha subtuberculifera Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha sutchariti Likhitrakarn, Golovatch, & Panha, 2014
Orthomorpha tenuipes (Attems, 1898)
Orthomorpha thalebanica Golovatch, 1998
Orthomorpha tuberculifera Likhitrakarn, Golovatch, & Panha, 2011
Orthomorpha unicolor Attems, 1930
Orthomorpha weberi (Pocock, 1894)
Orthomorpha zehntneri (Carl, 1902)

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References
  1. Bollman, C (1893). "Notes upon the North American myriapods described by C. L. Koch". Bulletin of the United States National Museum. 46: 150–152.
  2. Likhitrakarn, Natdanai; Panha, Somsak; Golovatch, Sergei (2011). "Revision of the Southeast Asian millipede genus Orthomorpha Bollman, 1893, with the proposal of a new genus (Diplopoda, Polydesmida, Paradoxosomatidae)". ZooKeys. 131: 1–161. doi:10.3897/zookeys.131.1921. PMC 3208436. PMID 22140329.
  3. Hoffman, R. (1999). Checklist of the millipeds of North and Middle America. Virginia Museum of Natural History Special Publications 8, 1–553.
  4. Likhitrakarn, Natdanai; Golovatch, Sergei; Panha, Somsak (2014). "The millipede genus Orthomorpha Bollman, 1893 in Laos (Diplopoda, Polydesmida, Paradoxosomatidae), with descriptions of new species". ZooKeys. 374: 1–22. doi:10.3897/zookeys.374.6711. PMC 3909809. PMID 24493962.
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