Published December 29, 2022
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Table 1 in A time relic: a new species of dwarf boa, Tropidophis Bibron, 1840 (Serpentes: Amerophidia), from the Upper Amazon Basin
Authors/Creators
- 1. Biogeography and Spatial Ecology Research Group, Life Sciences Faculty, Universidad Regional Amazónica Ikiam, Tena, Napo, Ecuador. & Instituto Nacional de Biodiversidad, INABIO, Quito, Ecuador.
- 2. Instituto Nacional de Biodiversidad, INABIO, Quito, Ecuador. & Sumak Kawsay In Situ, Vía Río Anzu km 14, Mera, Pastaza, Ecuador. & Waska Amazonía, Vía Río Anzu ciudadela ecológico Waska, Mera, Pastaza, Ecuador.
- 3. Leibniz Institute for the Analysis of Biodiversity Change / ZFMK, Museum Koenig, Adenauerallee 160, 53113, Bonn, Germany.
- 4. Instituto Nacional de Biodiversidad, INABIO, Quito, Ecuador.
- 5. Laboratório de Coleções Zoológicas, Instituto Butantan, 05503 - 90, Av. Vital Brazil, 1500, Butantã, São Paulo, SP, Brazil. & Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Zoologia, Avenida Bento Gonçalves, 91501 - 970, Porto Alegre, RS, Brazil.
Description
Table 1. Osteological comparisons among selected species of Tropidophis Bibron, 1840 and Trachyboa boulengeri Peracca, 1910. Diagnostic characters of Tropidophis cacuangoae sp. nov. are highlighted in bold. Species with confirmed records from the Andes mountain range are indicated with a dagger (†).
| Tro. cacuangoae | Tro. | Tro. melanurus | Tra. boulengeri | Tro. battersbyi | |
|---|---|---|---|---|---|
| sp. nov. † (n = 2); | taczanowskyi † | (n = 1) | (n = 1) | (n= 1); holotype | |
| holotype, | (n = 1); lectotype | ||||
| paratype | |||||
| Maxillary teeth | 18–21 | 21–22 | 17–18 | 17 | 13–14 |
| Palatine teeth | 7–9 | 7–8 | 7 | 7 | 7 |
| Pterygoid teeth | 11–13 | 13–14 | 14 | 20 | 10–11 |
| Dentary teeth | 22–25 | 22–23 | 19 | 25–27 | 18–20 |
| Coronoid | present | present | present | absent | absent |
| Prefrontal-Maxilla | present | absent | present | present | present |
| contact | |||||
| Lateral borders of | convex | convex | concave | concave | slightly convex |
| frontals in dorsal view | |||||
| Distance of parietal | distinctly | distinctly | very close | very close | moderately |
| ridges in posterior | separated | separated | separated | ||
| region of parietal | |||||
| Suture of parietal and | slightly curved | slightly curved | V-shaped | strongly curved | moderately |
| supraoccipital | curved | ||||
| Suture of supraoccipital | broadly V-shaped | V-shaped | almost straight | broadly V-shaped | V-shaped |
| and exoccipitals | |||||
| Lateral ridges of | parallel in anterior | parallel in anterior | parallel in anterior | meet in anterior | parallel in anterior |
| supraoccipital | region, diverging | region, diverging | region, diverging | region with | region, diverging |
| posteriorly, | posteriorly, | posteriorly, very | medial ridge and | posteriorly, | |
| moderately pro- | moderately pro- | pronounced | directly diverging | moderately pro- | |
| nounced | nounced | posteriorly, very | nounced | ||
| pronounced | |||||
| Medial ridge of | short (⅓ to ½ of | short (about ½ | absent | as long as | short (about ½ |
| supraoccipital | supraoccipital | of supraoccipital | supraoccipital, | of supraoccipital | |
| length), weakly | length), weakly | very pronounced | length), weakly | ||
| pronounced | pronounced | pronounced | |||
| Medial contact of | loose | firm | firm | firm | firm |
| exoccipitals | |||||
| Dorsal ridges of | moderately | moderately | long, very | short, very | moderately |
| exoccipitals | pronounced | pronounced | pronounced | pronounced | pronounced |
| Elongate, perpendicular | present | absent | absent | absent | present only on |
| groove at | prootic | ||||
| Basisphenoid-Prootic | |||||
| suture | |||||
| Level of caudal | at posterior | at posterior | at anterior margin | at anterior margin | distinctly anterior |
| termination of maxilla | margin of | margin of | of postorbital | of postorbital | to anterior margin |
| postorbital | postorbital | of postorbital | |||
| Level of caudal | shortly before | at posterior end of | distinctly | distinctly | shortly behind |
| termination of | posterior end of | exoccipital | posterior to | posterior to | posterior end of |
| pterygoid | exoccipital | posterior end of | posterior end of | exoccipital | |
| exoccipital | exoccipital | ||||
| Dentary-Angular | absent | present | present | present | present |
| contact | |||||
| Splenial-Compound | present | present | absent | absent | absent |
| Bone contact | |||||
Notes
Published as part of Ortega-Andrade, H. Mauricio, Bentley, Alexander, Koch, Claudia, Yánez-Muñoz, Mario H. & Entiauspe-Neto, Omar M., 2022, A time relic: a new species of dwarf boa, Tropidophis Bibron, 1840 (Serpentes: Amerophidia), from the Upper Amazon Basin, pp. 16 in European Journal of Taxonomy 854 (1) on page 16, DOI: 10.5852/ejt.2022.854.2021, http://zenodo.org/record/7501327
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