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16 results for “Heteromys”
Fig. 7 in A New Montane Species of Spiny Pocket Mouse (Rodentia: Heteromyidae: Heteromys) from Northwestern Costa Rica
Fig. 7. Comparisons of female specimens of Heteromys desmarestianus (left column), H. nubicolens (middle column), and H. oresterus (right column); dorsal views of the crania are provided for specimens in age class 5 (top row), age class 4 (middle row), and age class 2 (bottom row). Museum catalog numbers follow: age class 5, KU 158510, KU 142791, and MVZ 164860 (note, zygomatic arches are missing due to breakage); age class 4, KU 158505, KU 159025 (holotype of H. nubicolens), and MVZ 164861; age class 2, MNCR 793, MNCR 797, and MVZ 164862. See appendices 1 and 2 for full provenience.
Fig. 3 in A New Montane Species of Spiny Pocket Mouse (Rodentia: Heteromyidae: Heteromys) from Northwestern Costa Rica
Fig. 3. Dorsal, ventral, and lateral views of the cranium of the holotype of Heteromys nubicolens (KU 159025), an adult female in age class 4. See appendix 1 for full provenience.
Fig. 12 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 12. Landscape at Misión Tukuko (locality 97; Estado Zulia). Heteromys anomalus was frequently trapped in the disturbed forests in the background (as well as in regenerating thickets and small patches of vegetation along streams), but never in the open anthropogenic pastures in the foreground. Photographed in July 1986 by Robert S. Voss.
Fig. 11 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 11. Plot of specimen scores on the first two axes of the principal components analysis (PCA) of type series of Heteromys oasicus and H. anomalus and its synonyms. Adults in age classes 4–6 were used here. PC1type represents a size factor and was multiplied by —1 so that smaller specimens appear to the left and larger ones to the right (table 4). Axes are scaled relative to their eigenvalues (proportion of variation among specimens explained), and specimens are marked by the first letter of the following respective series: a, anomalus; b, brachialis; h, hershkovitzi; j, jesupi; o, oasicus; t, Trinidad (Caura, used as an additional sample of the nominotypical anomalus). Note the small size of specimens of H. oasicus, especially in contrast to the holotype of H. anomalus.
Fig. 10 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 10. Plot of rostral length (RL) versus age class for specimens of Heteromys oasicus from the Península de Paraguana´, Venezuela (A) and of H. anomalus from Latal, Venezuela (•). Rostral length was chosen to represent overall size here, because it correlated highly with growth in the group (Anderson, unpubl.) and was available for most specimens from Paraguana´. Age classes do not represent a continuous variable (such as age in days), but rather categories roughly corresponding to relative age (see text and Voss et al., 1990). Note the extremely small size of specimens of H. oasicus, with the adult in age class 5 smaller than individuals of age class 2 in the Latal sample of H. anomalus.
Fig. 9 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 9. Plot of specimen scores on the first two axes of the canonical variates analysis (CVA) of geographic variation performed on specimens of Heteromys in age class 4 from the 13 geographic samples. Axes are scaled relative to their eigenvalues (proportion of variation among centroids of geographic samples explained). Specimens of H. oasicus are marked by solid triangles, and individuals of H. anomalus are denoted by circles (solid circles for the South American mainland and open circles for the island of Trinidad). The first canonical axis can be interpreted as a measure of size (table 3), with large specimens having positive scores.
Fig. 8 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 8. Plot of specimen scores on the first two axes of the principal components analysis (PCA) of geographic variation performed on 174 specimens of Heteromys in age class 4 without regard to geographic sample. PC1geo represents a size factor and was here multiplied by —1 so that smaller specimens appear to the left and larger ones to the right (table 1). Axes are scaled relative to their eigenvalues (proportion of variation among specimens explained). Specimens of H. oasicus are marked by solid triangles, and individuals of H. anomalus are denoted by circles (solid circles for the South American mainland and open circles for the island of Trinidad). Note the strikingly small size of specimens of H. oasicus.
Fig. 7 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 7. Dorsal views of skulls of Heteromys anomalus from Tukuko (Zulia, Venezuela), Valera (Trujillo, Venezuela), and Caura (Trinidad) and of H. oasicus from the Península de Paraguaná (Falcón, Venezuela). All specimens are males in age class 4.
Fig. 4 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 4. Landscape at Cerro Santa Ana (localities 101 and 102; Estado Falcón), showing vertical stratification of vegetation types on its slopes. Upper: View of Cerro Santa Ana from the WNW. Note
Fig. 3 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 3. Dorsal, ventral, and lateral views of the holotype of Heteromys oasicus (USNM 456325), a male in age class 4.
Fig. 6 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 6. Map of the Península de Paraguaná showing the location of major geographic features and collection localities of Heteromys oasicus (Δ; see appendix 1 for complete provenience and museum catalog numbers). Gray shading indicates regions above 200 m; the small area above ca. 550 m on Cerro Santa Ana that supports evergreen cloud forest is largely overprinted by the symbol for locality 102.
Fig. 5 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 5. Map of northwestern South America showing collection localities of Heteromys oasicus (Δ) and Heteromys anomalus (•) in Colombia and western Venezuela. Localities are numbered to correspond with information given in the Gazetteer (appendix 1). Heteromys anomalus continues its distribution to the east in northcentral and northeastern Venezuela, but H. oasicus is endemic to the Península de Paraguana´. One locality of H. australis is known from Venezuela (locality 99, overprinted here by locality 74 of H. anomalus), but that species is primarily distributed to the west in Panama, Colombia,
Fig. 2 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 2. Dorsal, ventral, and lateral views of a cranium of Heteromys, showing method of taking cranial measurements. Abbreviations and measurements are defined in the Materials and Methods.
On following pages: 3. Mexican Spiny Pocket Mouse (Heteromysirroratus); 4. Jaliscan Spiny Pocket Mouse (Heteromys spectabilis); 5. Painted Spiny Pocket Mouse (Heteromys pictus); 6. Nelson's Spiny Pocket Mouse (Heteromys nelsoni); 7. Trinidad Spiny Pocket Mouse (Heteromys anomalus); 8. Overlook Spiny Pocket Mouse (Heteromys catopterius); 9. Paraguana Spiny Pocket Mouse (Heteromys oasicus); 10. Southern Spiny Pocket Mouse (Heteromys australis); 11. Ecuadorean Spiny Pocket Mouse (Heteromys teleus); 12. Gaumer''s Spiny Pocket Mouse (Heteromys gaumeri); 13. Desmarest's Spiny Pocket Mouse (Heteromys desmarestianus); 14. Goldman's Spiny Pocket Mouse (Heteromys goldmani); 15. Cloud-dwelling Spiny Pocket Mouse (Heteromys nubicolens); 16. Mountain Spiny Pocket Mouse (Heteromys oresterus). in Heteromyidae
On following pages: 3. Mexican Spiny Pocket Mouse (Heteromysirroratus); 4. Jaliscan Spiny Pocket Mouse (Heteromys spectabilis); 5. Painted Spiny Pocket Mouse (Heteromys pictus); 6. Nelson's Spiny Pocket Mouse (Heteromys nelsoni); 7. Trinidad Spiny Pocket Mouse (Heteromys anomalus); 8. Overlook Spiny Pocket Mouse (Heteromys catopterius); 9. Paraguana Spiny Pocket Mouse (Heteromys oasicus); 10. Southern Spiny Pocket Mouse (Heteromys australis); 11. Ecuadorean Spiny Pocket Mouse (Heteromys teleus); 12. Gaumer''s Spiny Pocket Mouse (Heteromys gaumeri); 13. Desmarest's Spiny Pocket Mouse (Heteromys desmarestianus); 14. Goldman's Spiny Pocket Mouse (Heteromys goldmani); 15. Cloud-dwelling Spiny Pocket Mouse (Heteromys nubicolens); 16. Mountain Spiny Pocket Mouse (Heteromys oresterus).
Fig. 5 in A New Montane Species of Spiny Pocket Mouse (Rodentia: Heteromyidae: Heteromys) from Northwestern Costa Rica
Fig. 5. External features of Heteromys nubicolens from Monteverde (KU 142791, paratype), an adult female in age class 5. Close-up views of the cheek pouches, left front foot, and left hind foot are also provided. Illustration made from life by Fiona A. Reid on 25 February 1987 and reproduced here with her permission. See appendix 1 for full provenience.
Fig. 1 in Taxonomy, Distribution, and Natural History of the Genus Heteromys (Rodentia: Heteromyidae) in Western Venezuela, with the Description of a Dwarf Species from the Península de Paraguaná
Fig. 1. Map of northcentral South America showing the approximate position of primary geographic samples of Heteromys anomalus (•) and of Heteromys from the Península de Paraguaná (Δ) used here. Gray shading approximates regions more than 1000 m in elevation. See appendices 1 and 2 for complete provenience and museum catalog numbers and appendix 3 for a list of measured specimens.
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