Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: Aug 01, 2002

New Two-Pored Amphisbaena (Squamata: Amphisbaenidae)from Argentina

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Page Range: 792 – 797
DOI: 10.1643/0045-8511(2002)002[0792:NTPASA]2.0.CO;2
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Abstract

A new two-pored Amphisbaena is described from Formosa and Corrientes provinces of Argentina. The new species has a faint autotomy annulus (with a fracture plane) and two cicatricial precloacal pores separated medially by a pair of nonpored segments. It differs from Amphisbaena dubia, which has a pair of pores on adjacent segments and a fracture plane on the tail, and from Amphisbaena darwini heterozonata, which differs in pore number, coloration, and shape of the autotomy annulus.

Resumen

Se describe una nueva especie de Amphisbaena con dos poros de las provincias argentinas de Formosa y Corrientes. La nueva especie tiene un anillo autotómico (con plano de fractura) poco marcado y dos poros precloacales cicatriciales separados medialmente por un par de segmentos sin poros. La nueva especie difiere de Amphisbaena dubia, que tiene un par de poros en segmentos adjacentes y plano autotómico en la cola, y de Amphisbaena darwini heterozonata, que tiene distinto número de poros y diferente coloración y forma del anillo autotómico.

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Copyright: The American Society of Ichthyologists and Herpetologists
 Fig. 1. 
 Fig. 1. 

Map showing the collection sites of Amphisbaena hiata (open circles) and the approximate distribution of Amphisbaena dubia (shaded, after Gans, 1964)

 Fig. 2. 
 Fig. 2. 

Dorsal, lateral, and ventral views of the midbody segments of Amphisbaena hiata (FML 10217). Anterior is to the left

 Fig. 3. 
 Fig. 3. 

Outline of the head lepidosis of the holotype of Amphisbaena hiata (UNNEC 1043) in dorsal, lateral and ventral views

 Fig. 4. 
 Fig. 4. 

Ventral view of the cloaca of Amphisbaena hiata (top UNNEC 1043; bottom UNNEC 888). Note the cicatricial pores (arrows). Anterior to the left

 Fig. 5. 
 Fig. 5. 

Ventral view of the tail of Amphisbaena hiata (FML 10217). The arrow indicates the autotomy annulus. Anterior is to the left.

Received: Aug 20, 2001
Accepted: Mar 21, 2002