A new two-pored species of Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado, with a key to the two-pored species of Amphisbaena Author Ribeiro, Síria Author Gomes, Jerriane O. Author Silva, Helder Lúcio Rodrigues Da Author Cintra, Carlos Eduardo D. Author Jr, Nelson Jorge Da Silva text Zootaxa 2016 4147 2 124 142 journal article 10.11646/zootaxa.4147.2.2 10c7f3db-8b39-440f-becf-db7b220cf027 1175-5326 262985 839EE07B-6CD7-429C-821C-2B54CC58FDC2 Key to the species of Amphisbaena with two precloacals pores 1. Precloacals pores arranged in a continuous series............................................................ 4 - Precloacals pores separated for median hiatus.............................................................. 2 2. Tail with autotomic constriction, less than 19 dorsal segments in midbody half-annulus, 3/3 supralabials............... 3 - Autotomic constriction of tail absent, more than 19 dorsal segments in midbody half-annulus, 4/4 supralabials............ ...................................................................................... Amphisbaena carli 3. More than 238 body annuli, less than 16 tail annuli, postmalar row absent, tail tip compressed...... Amphisbaena absaberi - Less than 215 body annuli, more than 17 tail annuli, postmalar row present, tail tip rounded........... Amphisbaena hiata 4. Postmalar present.................................................................................... 5 - Postmalar absent..................................................................................... 8 5. Body annuli 216–249; tail tip slightly compressed........................................... Amphisbaena leeseri - Body annuli less than 207, tail tip rounded................................................................ 6 6. 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 dorsal and 16–23 ventral segments to a midbody annulus..................... 7 7. Caudal annuli 19–25.................................................................. Amphisbaena darwini - Caudal annuli 15–18.............................................................. Amphisbaena heterozonata 8. Body annuli less than 139, 9 tail annuli.................................................... Amphisbaena brevis - Body annuli more than 150, tail annuli more than 12........................................................ 9 9. Body annuli less than 186............................................................................ 10 - Body annuli more than 202........................................................................... 12 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, 14–16 tail annuli......................................... Amphisbaena neglecta - Dorsal and ventral sulci absent, 18–20 tail annuli....................................... Amphisbaena anaemariae 12. Body annuli 328−342................................................................ Amphisbaena filiformis - Body annuli less than 292............................................................................ 13 13. Tail autotomic constriction absent...................................................................... 14 - Tail autotomic constriction present...................................................................... 16 14. Tail tip strongly compressed........................................................... Amphisbaena roberti - Tail tip rounded.................................................................................... 15 15. Tail annuli 13–18, dorsal sulci present..................................................... Amphisbaena dubia - Tail annuli 20–26, dorsal sulci absent................................................ Amphisbaena lumbricalis 16. 10 dorsal segments to a midbody annulus.................................................. Amphisbaena caiari - 12–16 dorsal segments to a midbody annulus............................................................. 17 17. 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............................................ 18 18. Tail tip rounded.................................................................. Amphisbaena miringoera - Tail tip slightly or strongly compressed.................................................................. 19 19. 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