Alopoglossus, Ribeiro-Júnior, 2018

Ribeiro-Júnior, Marco Antônio, 2018, A new species of Alopoglossus lizard (Squamata, Alopoglossidae) from the Southern Guiana Shield, northeastern Amazonia, with remarks on diagnostic characters to the genus, Zootaxa 4422 (1), pp. 25-40: 35-36

publication ID

https://doi.org/10.11646/zootaxa.4422.1.2

publication LSID

lsid:zoobank.org:pub:D702FA73-06E7-48AB-982E-C0B18C3A9A88

persistent identifier

http://treatment.plazi.org/id/EA0A5317-0414-FFE6-FF13-F9B5FA4AFE79

treatment provided by

Plazi

scientific name

Alopoglossus
status

 

Key to the species of Alopoglossus  

This key is adapted from Torres-Carvajal & Lobos (2014) and does not reflect the phylogenetic relationships of the species.

1. A double longitudinal row of widened gular scales; dorsal scales lanceolate in transverse rows only.................... 2

- No double longitudinal row of widened gular scales; dorsal scales hexagonal in transverse rows only or rhomboidal in oblique and transverse rows.................................................................................. 4

2. Presence of distinct light stripe from mouth commissure to shoulder................................... A. viridiceps  

- No distinct light stripe from mouth commissure to shoulder................................................... 3

3. Ventral scales keeled, pointed................................................................... A. embera  

- Ventral scales smooth, rounded................................................................... A. festae  

4. Dorsal scales hexagonal with parallel lateral edges, in transverse rows only; transverse ventral count 10........ A. lehmanni  

- Dorsal scales rhomboidal or lanceolate, in oblique and transverse rows; transverse ventral count 4–8................... 5

5. Keels on posterior part of dorsum form longitudinal ridges; scales on side of neck large and conical with apparent bare skin

between conical scales........................................................................... A. copii   - Keels on posterior part of dorsum do not form longitudinal ridges; scales on side of neck small and granular or keeled and somewhat imbricate without apparent bare skin between scales................................................ 6

6. Scales on side of neck small and granular.................................................................. 7

- Scales on side of neck similar in shape to dorsals, nongranular, keeled, imbricate.................................. 8

7. Ventral scales distinctly keeled................................................................ A. atriventris  

- Ventral scales smooth......................................................................... A. buckleyi  

8. Four pairs of chin shields; third pair of chin shields separated from gulars by large scales...................... A. meloi  

- Three pairs of chin shields; third pair of chin shields in direct contact with gulars or separated from them by small, rounded or granular scales.............................................................................. A. angulatus