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Lizards of the family   Teiidae   (infraorder   Scincomorpha  ) were formerly known as   Macroteiidae  . There are 13 species of such lizards in the Amazon, in the genera    Ameiva    (Meyer, 1795),    Cnemidophorus    (Wagler, 1830),    Crocodilurus    (Spix, 1825),    Dracaena    (Daudin, 1801),    Kentropyx    (Spix, 1825) and    Tupinambis    (Daudin, 1802). Cytogenetic studies of this group are restricted to karyotype macrostructure. Here we give a compilation of cytogenetic data of the family   Teiidae  , including classic and molecular cytogenetic analysis of    Ameiva   ameiva    (Linnaeus, 1758),    Cnemidophorus    sp.1,    Kentropyx   calcarata    (Spix, 1825),    Kentropyx   pelviceps    (Cope, 1868) and    Tupinambis   teguixin    (Linnaeus, 1758) collected in the state of Amazonas, Brazil.    Ameiva   ameiva   ,    K.   calcarata    and    K.   pelviceps    have  2n =50 chromosomes classified by a gradual series of acrocentric chromosomes.    Cnemidophorus    sp.1 has  2n =48 chromosomes with 2 biarmed chromosomes, 24 uniarmed chromosomes and 22 microchromosomes.    Tupinambis   teguixin    has  2n =36 chromosomes, including 12 macrochromosomes and 24 microchromosomes. Constitutive heterochromatin was distributed in the centromeric and terminal regions in most chromosomes. The nucleolus organizer region was simple, varying in its position among the species, as evidenced both by AgNO 3  impregnation and by hybridization with 18S rDNA probes. The data reveal a karyotype variation with respect to the diploid number, fundamental number and karyotype formula, which reinforces the importance of increasing chromosomal analyses in the   Teiidae  .

comparative cytogenetics

Cytogenetic analyses of five amazon lizard species of the subfamilies   Teiinae   and   Tupinambinae   and review of karyotyped diversity the family   Teiidae