| Abstract: | A new species of the rodent genus Reithrodontomys (Cricetidae: Neotominae) is described from Cerro Asuncion in the western Cordillera de Talamanca, Costa Rica. The long tail, elongate rostrum, bulbous braincase, and complex molars of the new species associate it with members of the subgenus Aporodon, tenuirostris species group. In its diminutive size and aspects of cranial shape, the new species (Reithrodontomys musseri, sp. nov.) most closely resembles R. microdon, a form known from highlands in Guatemala and Chiapas, Mexico. In the course of differentially diagnosing the new species, we necessarily reviewed the Costa Rican and Panamanian subspecies of R. mexicanus based on morphological comparisons, study of paratypes and vouchers used in recent molecular studies, and morphometric analyses. We recognize Reithrodontomys cherrii (Allen, 1891) and R. garichensis finders and Pearson, 1940, as valid species, and allocate R. mexicanus potrerograndei Goodwin, 1945, as a subjective synonym of R. brevirostris Goodwin, 1943. Critical review of museum specimens collected subsequent to Hooper‘s (1952) revision is needed and would do much to improve understanding of Reithrodontomys taxonomy and distribution in Middle America. |
| Genre: | Article |
| ProdID: | 70003390 |
| Citation Author: | Gardner, Alfred L.; Carleton, Michael D. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 182 |
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| Citation Language: | English |
| Citation Larger Work Title: | Bulletin of the American Museum of Natural History |
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| Citation Number Of Pages: | 26 |
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| Citation Phsyical Description: | 26 p. |
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| Citation Publisher: | American Museum of Natural History |
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| Citation Search Results Text: | A new species of Reithrodontomys, subgenus Aporodon (Cricetidae: Neotominae), from the highlands of Costa Rica, with comments on Costa Rican and Panamanian Reithrodontomys; 2009; Article; Journal; Bulletin of the American Museum of Natural History; Gardner, Alfred L.; Carleton, Michael D. |
| Citation Start Page: | 157 |
| Citation Volume: | 331 |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | A new species of Reithrodontomys, subgenus Aporodon (Cricetidae: Neotominae), from the highlands of Costa Rica, with comments on Costa Rican and Panamanian Reithrodontomys; 2009; Article; Journal; Bulletin of the American Museum of Natural History; Gardner, Alfred L.; Carleton, Michael D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://digitallibrary.amnh.org/dspace/bitstream/2246/6035/6/331-05-gardner.pdf |
| Date Other: | Tue, 7 Jun 2011 10:50 -0500 |
| Publisher: | American Museum of Natural History |
