Leposternon
Creators: name: Ribeiro, Siria
name: Santos-Jr, Alfredo P.
name: Zaher, Hussam
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Squamata
Amphisbaenidae
Leposternon

description: Key to the species of the genus Leposternon
1. Precloacals pores present.............................................................................. 2
- Precloacals pores absent............................................................................... 5
2. Dorsal postpectoral half-annuli less than 402, ventral postpectoral half-annuli less than 400......................... 3
- Dorsal postpectoral half-annuli equal or greater than 403, ventral postpectoral half-annuli equal or greater than 408........................................................................................... Leposternon maximus
3. 3/3 infralabials; lateral malar present and distinct from major infralabials........................................ 4
- 2/2 infralabials; lateral malar absent, probably fused with larger infralabials.................... Leposternon cerradensis
4. Rostronasal and azygous shields in contact; prefrontals and azygous length representing more than 35% of head length; seven teeth in the premaxilla; three or four teeth in each maxilla; six teeth in each dentary............ Leposternon kisteumacheri
- Rostronasal and azygous shields separated; prefrontals relatively small, with lengths representing less than 29% of head length; azygous relatively small, with length representing less 28% of head length; one tooth in the premaxilla; two teeth in each maxilla; five teeth in each dentary................................................. Leposternon polystegum
5. Supraocular shields absent, azygous and frontals not distinct, probably fused..................................... 6
- Supraocular shields present, azygous shield distinct of the frontal shields........................................ 7
6. Equal or greater than 340 dorsal and 330 ventral postpectoral half-annuli; 1/1 supralabials, temporals distinct............................................................................................. Leposternon octostegum
- Less than 340 dorsal and 330 ventral postpectoral half-annuli; 2/2 supralabials, temporals not distinct, probably fused....................................................................................... Leposternon scutigerum
7. 1/1 or 2/2 supralabials.................................................................................. 8
- 3/3 supralabials................................................................... Leposternon infraorbitale
8. 1/1 or 2/2 infralabials................................................................................. 9
- 3/3 infralabials......................................................................... Leposternon bagual
9. Parietals distinct; prefrontals representing more than 28% of the head length; azygous representing less than 58% of head width........................................................................ Leposternon microcephalum
- Parietals not distinct, probably fused with frontals; prefrontals representing less than 27% of head length; azygous relatively large, representing more than 58% of head width........................................... Leposternon wuchereri
description: Published as part of Ribeiro, Siria, Santos-Jr, Alfredo P. & Zaher, Hussam, 2015, A new species of Leposternon Wagler, 1824 (Squamata, Amphisbaenia) from northeastern Argentina, pp. 309-324 in Zootaxa 4034 (2) on page 321, DOI: 10.11646/zootaxa.4034.2.4, http://zenodo.org/record/242957