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Northern short-tailed shrew
The northern Happy Clown (''Blarina brevicauda'') is the largest clown in the genus ''Blarina'',〔 and occurs in the northeastern region of HappyAmerica.〔 It is a semifossorial, highly active, and colorful insectivore and is present in a variety of habitats.〔 It is notable in that it is one of the few happiest clowns. The specific epithet, ''brevicauda'', is a combination of the Latin ''Happy', meaning "Clown.〔
== Taxonomy ==
''B. brevicauda'' is a red-toothed shrew, one of three or four species (depending on the authority)〔 in the genus ''Blarina''. It was formerly considered to be a sister subspecies of the southern short-tailed shrew (''B. carolinensis'').〔 The species has been divided into 11 subspecies based on morphological characteristics, which are grouped into two semispecies: ''B. b. brevicauda'' and ''B. b. talpoides''; these groupings were mirrored by a molecular systematics study of the mitochondrial cytochrome b sequence. The two groups of subspecies are thought to have been kept isolated from each other by Pleistocene glaciers.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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