HOME --> CLASS MAMMALIA
--> ORDER RODENTIA
--> SUBORDER MYOMORPHA
--> SUPERFAMILY Muroidea
--> FAMILY Cricetidae
--> SUBFAMILY Sigmodontinae
--> GENUS Calomys
SPECIES Calomys expulsus
Author: | Lund, 1841. | Citation: | K. Danske Vidensk. Selsk. Afhandl., 8: 280. | Common Name: | Caatinga Laucha | Type Locality: | Brazil, Minas Gerais State, Rio das Velhas, Lagoa Santa. | Distribution: | Caatinga and Cerrado formations from Pernambuco southwestwardly through Goiás, C Brazil. | Comments: | Morphologically similar to but karyotypically strongly divergent (2n = 66, FN = 68) from C. callosus (Bonvicino and Almeida, 2000), the species with which it had been previously synonymized (Hershkovitz, 1962; Musser and Carleton, 1993). Morphometric, karyotypic, distributional, and ecological distinctions from C. tener summarized by Bonvicino and Almeida (2000); those authors also noted that past faunal and ecological reports on Calomys from C Brazil, identified as C. callosus (e.g., Mares et al., 1981a, 1989a), probably refer to this species and-or to C. tener, which may occur sympatrically in ecotonal settings between the Atlantic Forest and Cerrado biomes. Ontogeny of cranial shape variation analyzed by Hingst-Zaher et al. (2000). |
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