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Ammodesmidae is a family of small millipedes endemic to Africa, containing seven species in two genera. Ammodesmids range from 1.4 to 5.0 mm (0.055 to 0.20 in) long with 18 or 19 body segments in both sexes, and are capable of rolling into a tight sphere. Ammodesmidae contains two genera: ''Ammodesmus'', with three species known from West Africa and the Democratic Republic of Congo, and ''Elassystremma'', with four species known from East Africa. Adult ''Ammodesmus'' range from 1.4–2 mm in length, and adult males possess a last pair of legs strongly modified: bearing long whip-like bristles (setae) and with vestigial claws. Males of the genus ''Elassystremma'' lack the modified rear legs, and are larger, from 3.3-5 mm.〔 ==''Ammodesmus''== The genus ''Ammodesmus'' was named in 1896 by Orator F. Cook in the description of ''Ammodesmus granum''. The genus was thought restricted to West Africa (Guinea, Liberia and Ivory Coast) until the 2015 description of ''A. congoensis'' from the Democratic Republic of the Congo. ''A. congoensis'' differs from the other two speciesin lacking ozopores (defensive glands), and has conspicuous sexual dimorphism, with females bearing sparse, long setae. *''Ammodesmus congoensis'' VandenSpiegel & Golovatch, 2015 *''Ammodesmus granum'' Cook, 1896 *''Ammodesmus nimba'' VandenSpiegel & Golovatch, 2012 Ammodesmus nimba male.jpg|''Ammodesmus nimba'' Ammodesmus nimba ZooKeys-221-001-g005 (posterior).jpg|Modified hind legs of ''Ammodesmus nimba'' Ammodesmus congoensis male.jpg|''Ammodesmus congoensis'' male Ammodesmus congoensis female.jpg|''Ammodesmus congoensis'' female 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「Ammodesmidae」の詳細全文を読む スポンサード リンク
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