. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 186 Bulletin Museum of Comparative Zoology, Vol. 157, No. 3. Figure 1. Distribution of species of Stenocercus empfnasized in tfiis paper (western South America, Ecuador to Paraguay and northern Argentina). Open symbols for S. fimbhatus are literature records from Avila-Pires (1995); locality for S. caducus in northern Argentina is the southernmost locality in Argentina reported by Cei (1993). Otherwise, all records are based on spec- imens examined. Numbered localities are documented or suspected cases of sympatry ref
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 186 Bulletin Museum of Comparative Zoology, Vol. 157, No. 3. Figure 1. Distribution of species of Stenocercus empfnasized in tfiis paper (western South America, Ecuador to Paraguay and northern Argentina). Open symbols for S. fimbhatus are literature records from Avila-Pires (1995); locality for S. caducus in northern Argentina is the southernmost locality in Argentina reported by Cei (1993). Otherwise, all records are based on spec- imens examined. Numbered localities are documented or suspected cases of sympatry referred to in the text and noted in the Appendix: 1, Pampa Hermosa; 2, Pampa Seca, Rio Mixiollo; 3, Tingo Maria; 4, Manu National Park. Upper left quadrant outlined with dotted line is the area shown in greater detail in Figure 2. figurations of neck folds and mite pockets vaiy considerably among species of Sten- ocercus and are useful in distinguishing species. The most important qualitative characteristics of these features used here- in are the following, which are discussed more fully by Cadle (1991): Neck and Body Folds and Crests. In contrast to many species of Stenocercus, neck folds are usually absent or weakly de- veloped in the "Opliryoessoides ; When present, they are better character- ized as crests rather than folds because they are usually indicated by strongly keeled rows of scales instead of actual folds of skin. The position of such crests corresponds to the position of folds seen in other species of Stenocercus, but only two are commonly seen in the "Ophryoes- soides group": an antehumeral crest, which. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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