HOME --> CLASS MAMMALIA
--> ORDER RODENTIA
--> SUBORDER MYOMORPHA
--> SUPERFAMILY Muroidea
--> FAMILY Cricetidae
--> SUBFAMILY Sigmodontinae
--> GENUS Eligmodontia
SPECIES Eligmodontia morgani
Author: | J. A. Allen, 1901. | Citation: | Bull. Am. Mus. Nat. Hist., 14: 409. | Common Name: | Western Patagonian Laucha | Type Locality: | Argentina, Santa Cruz Prov., basaltic canyons 50 mi (80 km) SE Lago Buenos Aires. | Distribution: | W Patagonian region of S Argentina (C Neuquén and SC Río Negro Provs. south to NW Santa Cruz; see Hillard et al., 1997:Fig. 2) and adjacent Chile. | Status: | IUCN – Lower Risk (lc). | Comments: | This species epithet was used by Kelt et al. (1991) for the 2n = 32 chromosomal form as compared with 2n = 44 in E. typus proper; the same contrast holds for other populations in sympatry or parapatry in SC Argentina (Tiranti, 1997; Zambelli et al., 1992). Multivariate analysis of craniodental variables underscores the strong morphological divergence of specimens with known karyotype and cytochrome b haplotype (Hillard et al., 1997; Sikes et al., 1997). Historical biogeography with regard to E. typus discussed by Hillard et al. (1997), who elaborated upon the complementarity of their present-day distributions to biotic provinces within Patagonia. |
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