Orthomorpha

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

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.

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

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. Three more species from Laos were described in 2014. • 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)