Sentence:  Tanaka (175) was the first to distinguish three kinds of akamushi in 1919, naming them "<WSD>kedani</WSD>" and "nezumidani" "a" and "b" on the basis of certain morphological differences. Of their habits he says : "The first kind, or <WSD>kedani</WSD>, bites both man and field voles; 
Meaning of the word marked with <WSD> tags:  A species of mite ((noshow=1)) found in Japan.