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''Parafontaria'' is a genus of "flat-backed" millipedes (order Polydesmida) consisting of 13 species native to Japan, where they are known as train millipedes.〔Marek, P., et al. (2014) (''A Species Catalog of the Millipede Family Xystodesmidae (Diplopoda: Polydesmida)''. ) Special Publication 17. Virginia Museum of Natural History. pp.86-90〕 Some species exhibit periodical swarming behavior during which large numbers of individuals congregate and can sometimes slow or derail trains when they occur on tracks. Individuals vary from around 3.5 to 6 cm (1.5 to 2.5 in) as adults, and feed on leaf litter as well as soil, making them comparable to earthworms in facilitating decomposition and soil nutrient cycling. ==Species== *''Parafontaria crenata'' Shinohara, 1986 *''Parafontaria doenitzi'' (Karsch, 1880) *''Parafontaria erythrosoma'' (Takakuwa, 1942) *''Parafontaria falcifera'' (Verhoeff, 1936) *''Parafontaria ishiii'' Shinohara, 1986 *''Parafontaria laminata'' (Attems, 1909) *''Parafontaria longa'' Shinohara, 1986 *''Parafontaria longispina'' Miyosi, 1951 *''Parafontaria shiraiwaensis'' Shinohara, 1986 *''Parafontaria terminalis'' (Takakuwa, 1942) *''Parafontaria tokaiensis'' Tanabe, 2002 *''Parafontaria tonominea'' (Attems, 1899) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Parafontaria」の詳細全文を読む スポンサード リンク
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