Orthomorpha coarctata

Orthomorpha coarctata (syn. Asiomorpha coarctata), the long-flange millipede,[1] is a widely introduced species of Polydesmidan millipede of the family Paradoxosomatidae. It is presumed native to Southeast Asia but due to transport by humans occurs in tropical and sub-tropical areas throughout the world, including the Hawaiian Islands, the West Indies, Gulf Coast of North America, and the Galápagos Islands.[1][2][3]

Orthomorpha coarctata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Diplopoda
Order: Polydesmida
Family: Paradoxosomatidae
Genus: Orthomorpha
Species:
O. coarctata
Binomial name
Orthomorpha coarctata
(De Saussure, 1860)
Synonyms
  • Polydesmus coarctatus DeSaussure, 1860
  • Strongylosoma poeyi Bollman, 1887
  • Strongylosoma coarctatum Pocock, 1894
  • Orthomorpha coarctata Attems, 1937
  • Asiomorpha coarctata Verhoeff, 1939

Description

Males range from 14.5–20.5 mm in length and 1.5 to 2.7 mm wide while females are somewhat larger ranging from 16.5–27.5 mm long, and 1.6–3.2 mm wide.[4] O. coarctata can be distinguished from Oxidus gracilis, another widely introduced Asian millipede, by having proportionally longer and pointier paranota (lateral keels) on mid-body segments and longer gonopods (male reproductive appendages).[5]

O. coarctata is unique within the genus Orthomorpha in that the gonopods have a single, simple tip, while other species have two or three lobes. This distinction has led some authors to place O. coarctata in a separate, monotypic genus, Asiomorpha.[2][4]

  • Anatomy of an individual collected in Thailand
  • Anatomy of male (A-I) and female (J-L)
  • Gonopods
gollark: Aren't those 2016-era devices?
gollark: OnePlus went from "flagship-y devices but cheaper" to "flagship-y devices but the same price".
gollark: <£150 or so.
gollark: They are probably outside my price range?
gollark: Wait, palaiologos, do you just randomly scroll up to see me saying ħħħħħħħħħ occasionally?

References
  1. McCormack, Gerald (2007). "Asiomorpha coarctata, Long-flange Millipede". Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Retrieved 20 May 2014.
  2. Hoffman, R. L. (1999). "Checklist of the millipeds of North and Middle America". Virginia Museum of Natural History Special Publications. 8: 1–553. p. 415
  3. Peck, S. B. (1998). "Introduced insect fauna of an oceanic archipelago: The Galápagos Islands, Ecuador" (PDF). American Entomologist. 44 (4): 218–237. doi:10.1093/ae/44.4.218. p. 220
  4. Likhitrakarn, Natdanai; Golovatch, Sergei; Panha, Somsak (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.
  5. McCormack, Gerald (2007). "Oxidus gracilis, Short-flange Millipede". Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Retrieved 20 May 2014.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.