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''Spea'' is a genus of North American amphibian commonly referred to as the western spadefoot toads. They differ greatly from true toads (those of the family Bufonidae) by having eyes with vertical pupils, no parotoid glands, and relatively smooth skin. Their most distinctive feature is a spade-like projection on their hind feet, from which their common name is derived. This projection enables spadefoot toads to dig in loose soils with ease. Its name is from the Ancient Greek ' (, ‘cave, cavern’) == Species == ''Spea'' species were once classified with their European cousins in the family Pelobatidae, but have since been reclassified to their own family, Scaphiopodidae with other North American species. There are four species in the genus ''Spea'': *Plains spadefoot toad, ''Spea bombifrons'' (Cope, 1863) *Western spadefoot toad, ''Spea hammondii'' (Baird, 1859) *Great Basin spadefoot toad, ''Spea intermontana'' (Cope, 1863) *New Mexico spadefoot toad, ''Spea multiplicata'' (Cope, 1863) 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「Spea」の詳細全文を読む スポンサード リンク
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