Amphisbaena nigricauda GANS, 1966
Can you confirm these amateur observations of Amphisbaena nigricauda?
Amphisbaena nigricauda
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| Higher Taxa | Amphisbaenidae, Amphisbaenia, Lacertoidea, Sauria, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Black-headed Worm Lizard Portuguese: Cobra-de-Duas-Cabeças, Cobra-Cega |
| Synonym | Amphisbaena nigricauda GANS 1966: 252 Amphisbaena nigricauda — GANS 2005 |
| Distribution | Brazil (Espirito Santo) Type locality: Brazil; Espirito Santo, Refugio Sooretama (19°00’S, 40°00’W). |
| Reproduction | oviparous |
| Types | Holotype: MNRJ R3305. Paratypes: AMNH 97205, CG 3207. |
| Diagnosis | DIAGNOSIS: This is a small species of Amphisbaena, without major fusions of head shields, with the prefrontal the largest segment on the dorsal, and the second infralabial by far the largest segment on the ventral, surface of the head, with a strongly prognathous snout on the small head, enlarged postocular and parietal segments, no post-malar row, and a dark, pigmented, caudal tip. The form has 222 to 226 body annuli, 19 to 24 caudal annuli, a clearly marked autotomy annulus that falls on the sixth to ninth postcloacal annuli, 10 dorsal and 16 ventral segments to a midbody annulus, and four clearly marked, round pores in both sexes. The tail is cylindrical, with a conical distal tip. The coloration is very light brownish white, very slightly darker on the dorsal surface, but with the last six to eight caudal annuli much more heavily pigmented, both dorsally and ventrally. The darker pigment is produced by a speckling, rather than an even pigmentation of segments; the individual melanophores may be seen under the dissecting microscope. (Gans 1966: 252) |
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