Herpetofauna of the Quaternary sand dunes of the Middle Rio São Francisco, Bahia, Brazil. VIII. Amphisbaena arda sp. nov., a fuliginosa-like checkered patterned Amphisbaena (Squamata, Amphisbaenidae)
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چکیده
The squamate fauna of the fossil dunes of the middle Rio São Francisco in the Brazilian semiarid Caatingas, State of Bahia, is characterized by high richness and endemism. An important part of squamates from the area was described in the last few years, including new genera, some showing unsuspected morphological adaptations for life on sand in Abstract Herpetofauna of the Quaternary sand dunes of the Middle Rio São Francisco, Bahia, Brazil. VIII. Amphisbaena arda sp. nov., a fuliginosa-like checkered patterned Amphisbaena (Squamata, Amphisbaenidae). Amphisbaena arda sp. nov. is described based on a specimen obtained at Mocambo do Vento, on the left bank of the São Francisco river, Bahia State, Brazil. A. arda is a medium sized amphisbaenian with a checkered black and white color pattern similar to the one present in the fuliginosa group but differing from that by having a lighter pigmentation, an uniformly white ventral surface, and by several other important morphological characters. A. arda is similar to Amphisbaena vermicularis in meristic characters currently used to assist amphisbaenian identification but can be separated from it by its color pattern, its flatter cephalic shields, and by the more ventral position of nostril.
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