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The moult of the white-toothed shrew, Crocidura russula (Hermann, 1780) (Insectivora, Soricidae), from the Ebro Delta (Catalonia, Spain)

— In northeastern Spain C. russula is subject to at least four moults. The first (M-I) occurs from May to September and consists in the subtitution of the juvenile by the first-summer pelage. The sequence of the moult seemingly progresses tailwards and finished in the inguinal region. In the second moult (M-II) the first-summer coat is changed for the first-winter one. It goes forwards, and from the back to the belly. This moult takes place from August to December. The third moult (M-III) gives way to the change of the first-winter pelage for the second-summer hair. It occurs in two stages. The first, from January to February, affects only the cephalic area, while the second, from March to May, involves the rest of the coat. Both stages advance from head to tail. Some adult specimens undergo another summer moult (M-IIP), from May to August, which progresses tailwards and gives way to a second pelage of the second-summer (sum-2*). The fourth moult (M-IV) gives the second-winter coat and has a similar sequence to that of M-II.