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Rodriguesophis iglesiasi (GOMES, 1915)

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Gomes' Pampas Snake
Portuguese: Cobra-Corredeira, Falsa-Coral 
SynonymRhinostoma Iglesiasi GOMES 1915: 126
Rhinostoma bimaculatum LUTZ & MELLO 1923
Phimophis iglesiasi — BAILEY 1967
Phimophis iglesiasi — HOGE et al. 1978
Rodriguesophis iglesiasi — GRAZZIOTIN et al. 2012
Rodriguesophis iglesiasi — WALLACH et al. 2014: 656
Rodriguesophis iglesiasi — NOGUEIRA et al. 2019 
DistributionBrazil (from Minas Gerais to Piaui, Bahia)

Type locality: "Estado do Piauhy, Brazil." [=Piauí State, northwestern Brazil].  
TypesHolotype: IBSP (= IB) 513, a 490 mm female (F. Iglesias). 
DiagnosisDiagnosis (Rodriguesophis): Loreal absent, specialized, spatulate straight rostral scale present (i.e. not upcurved to form a shovel-like structure), bright red dorsal colour pattern, and dark nuchal collar of juveniles retained in adult specimens, except for R. scriptorcibatus that looses the red colour but tends to retain an unconspicuous nuchal collar.

Description of the type specimen (iglesiasi). “Young female. Maxillary teeth 10 + 2; mandibular teeth subequal. Pupil elliptic, vertical. Diameter of the eye equal to 1/3 of its distance from the tip of the snout which is prominent and obtusely pointed. Rostral 1/3 broader than long in its lower surface, smooth in the up per surface which is somewiat shorter than its distance from the frontal; internasals as long as broad, shorter than the prefron tals; frontal nearly triangular, as long as broad, shorter than its distance from the tip of the snout and than the parietals; loreal absent; the preocular presents almost the same dimensions as the supraocular, which is very small, measuring only 1/2 of the length of the frontal and 1/4 of its breadth; 2 postoculars; temporals 1 + 2; 8 supralabials; 4th and 5th in contact with the anterior chin-shields, which are as long as the posterior. Scales smooth, with apical pits, in 19 rows. Ventrals 169, anal entire; subcaudals 45 pairs. Tail ending acutely. Red above, with a large black spot on the nape; the scales edged with black; head lightly dark spotted above. Sides (3 rows of scales) and lower part white-yellowish (in alcohol).” (Gomes 1915) 
CommentSynonymy that of PETERS & OREJAS-MIRANDA 1970, following AMARAL 1926.

Type species: Rhinostoma Iglesiasi GOMES 1915 is the type species of the genus Rodriguesophis ZAHER, GRAZZIOTIN, MURPHY, SCROCCHI, ALTAMIRANO, BENAVIDES, ZHANG & BONATTO in GRAZZIOTIN et al. 2012. 
EtymologyNamed after Mr. F. IGLESIAS who collected the type. 
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