Amphisbaena Linnaeus 1758
Creators: name: Ribeiro, Síria
name: Sá, Vânia
name: Santos-Jr, Alfredo P.
name: Graboski, Roberta
name: Zaher, Hussam
name: Guedes, Andrei G.
name: Andrade, Sheila P.
name: Vaz-Silva, Wilian
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Amphisbaenidae
Amphisbaena

description: Key to the species of Amphisbaena with two precloacal pores
1. Precloacals pores separated for median hiatus............................................................... 2
- Precloacals pores arranged in a continuous series............................................................ 5
2. 4/4 supralabials....................................................................................... 3
- 3/3 supralabials....................................................................................... 4
3. Nasals paired, postmalar row present, less than 170 body annuli, tail with autotomic constriction, less than 19 dorsal segments in midbody half-annulus................................................................. Amphisbaena kiriri
- Nasals separated by rostral, postmalar row absent, more than 215 body annuli, autotomic constriction of tail absent, 20 or more less than 19 dorsal segments in midbody half-annulus........................................... Amphisbaena carli
4. More than 238 dorsal half-annuli, less than 16 tail annuli, postmalar row absent, tail tip compressed.. Amphisbaena absaberi
- Less than 215 dorsal half-annuli, more than 17 tail annuli, postmalar row present, tail tip rounded....... Amphisbaena hiata
5. Postmalar present..................................................................................... 6
- Postmalar absent...................................................................................... 8
6. Body annuli 216–249; tail tip slightly compressed............................................ Amphisbaena leeseri
- Body annuli less than 207, tail tip rounded.................................................................. 7
7. Dorsal and ventral sulci present; 10–12 dorsal and 10–14 ventral segments to a midbody annulus..... Amphisbaena silvestrii
- Dorsal and ventral sulci absent; 13–19 more dorsal and 16–23 ventral segments to a midbody annulus...................................................................................................... Amphisbaena darwini
8. Dorsal half-annuli less than 139, 9 tail annuli................................................. Amphisbaena brevis
- Dorsal half-annuli more than 150, tail annuli more than 12..................................................... 9
9. Dorsal half-annuli less than 186......................................................................... 10
- Dorsal half-annuli more than 202........................................................................ 13
10. 10 dorsal and 10 ventral segments to a midbody annulus........................................ Amphisbaena crisae
- 12–16 dorsal and ventral segments to a midbody annulus..................................................... 11
11. Dorsal and ventral sulci present......................................................... Amphisbaena neglecta
- Dorsal and ventral sulci absent.......................................................................... 12
12. 12–15 tail annuli; tail representing 6.1%–9.3% of snout-vent length; prefrontals relatively long, representing 27.7%–4.1% (33.4% means, n = 28) of head length........................................... Amphisbaena mebengokre sp. nov.
- more than 16 tail annuli, tail representing more than 13% of snout-vent length, prefrontals relatively small, representing 24.7% of head length (holotype date)........................................................ Amphisbaena anaemariae
13. Body annuli 328‾342................................................................ Amphisbaena filiformis
- Body annuli less than 292.............................................................................. 14
14. Tail autotomic constriction absent........................................................................ 15
- Tail autotomic constriction present....................................................................... 17
15. Tail tip strongly compressed............................................................. Amphisbaena roberti
- Tail tip rounded...................................................................................... 16
16. Tail annuli 13–18, dorsal sulci present...................................................... Amphisbaena dubia
- Tail annuli 20–26, dorsal sulci absent.................................................. Amphisbaena lumbricalis
17. 10 dorsal segments to a midbody annulus.................................................... Amphisbaena caiari
- 12–16 dorsal segments to a midbody annulus............................................................... 18
18. Body annuli 203‾220, caudal annuli 26‾29, dorsal sulci absent............................... Amphisbaena mitchelli
- Body annuli more than 229, tail annuli 18‾24, dorsal sulci present.............................................. 19
19. Tail tip rounded................................................................... Amphisbaena miringoera
- Tail tip slightly or strongly compressed................................................................... 20
20. Body annuli 230‾241, nasal well delimited and in contact in dorsal portion.................... Amphisbaena persephone
- Body annuli 283–292, nasal shield partially distinct........................................ Amphisbaena cuiabana
description: Published as part of Ribeiro, Síria, Sá, Vânia, Santos-Jr, Alfredo P., Graboski, Roberta, Zaher, Hussam, Guedes, Andrei G., Andrade, Sheila P. & Vaz-Silva, Wilian, 2019, A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species, pp. 301-320 in Zootaxa 4550 (3) on page 313, DOI: 10.11646/zootaxa.4550.3.1, http://zenodo.org/record/2625391