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The Ceratolasmatidae are a family of harvestmen with eleven described species. The monophyly of this family is questionable; it is composed of three possibly monophyletic groups:〔 (2007): Ceratolasmatidae Shear, 1986. In: Pinto-da-Rocha ''et al.'' 2007: 134ff〕 * ''Ceratolasma'' and ''Acuclavella'' are four to six millimeters long, with moderately short legs and short pedipalps. These two genera are closely related to ''Ischyropsalis'' (Ischyropsalididae).〔 * ''Hesperonemastoma'' species range from one to two millimeters in body length. They have similarities ''Nemastoma'', which occurs in the Old World (''hespero'' = "west" alludes to the occurrence in the New World). It seems to be more closely related to ''Taracus'' (Sabaconidae) than to ''Ceratolasma''.〔 * ''Crosbycus'' has a body length of less than one millimeter. The pedipalps are long and very thin. Its moderately long legs are densely covered with setae, spikes and trichomes. ''Crosbycus'' should possibly be placed in its own family.〔 ==Distribution== The family is restricted to North America, from California to British Columbia. ''Crosbycus'' is also found in Eastern Asia.〔 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「Ceratolasmatidae」の詳細全文を読む スポンサード リンク
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