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Erythrolamprus rochai ASCENSO, COSTA & PRUDENTE, 2019

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common Names 
SynonymErythrolamprus rochai ASCENSO, COSTA & PRUDENTE 2019
Erythrolamprus rochai — NOGUEIRA et al. 2019 
DistributionBrazil (Amapá)

Type locality: Urucum region (00o50' N, 51°53' W; ca. 171 m asl), municipality of Serra do Navio, state of Amapá, Brazil.  
TypesHolotype: MPEG 25680, Adult male (field number S.NAVIO 095), collected by D. Silvano, B. Pimenta and U. Galatti, between September and November 2000 (Fig. 7 in Ascenso et al. 2019).
Paratype: Adult male, MPEG 25681 (field number S.NAVIO 094), same data as holotype. 
DiagnosisDiagnosis: Erythrolamprus rochai is distinguished from all congeners by the combination of the following characteristics: (1) dorsal scale rows 17, reducing to 15 rows after midbody; (2) apical pit single; (3) 131–135 ventrals; (4) 56 subcaudals; (5) dorsum of head olive green, extending from anterior third of the body, changing gradually to grayish-brown at midbody, with six to 15 distinct black dorsal bands; (6) upper edges of supralabials with distinctive dark postorbital stripe; (7) belly cream without marks, except for some slight pigmentation on the lateral extremities of ventrals; (8) lateral black spots extending from anterior third of the body, located between 2– 3th dorsal scale rows, and merged on the posterior third of the body to form a lateral-posterior stripe, which extends to the end of the tail; (9) ventral surface of tail creamish-white without black spots; (10) intrasulcal region with enlarged spines, organized in rows in each lobe, extending from the distal region to the level of bifurcation of branches; (11) medial region of asulcate face of hemipenial body ornamented with extremely elongated spines homogeneously distributed at hemipenial body; (12) sulcus spermaticus bifurcates at the proximal portion of hemipenial body; and (13) small body size (SVL 217–219 mm). 
EtymologyThe specific epithet “rochai” is a patronym in honor to Reginaldo Augusto Trindade Rocha, laboratory technician at the Laboratory of Herpetology of Museu Paraense Emílio Goeldi, in recognition of his extraordinary work, zeal, and dedication to the herpetological collection of this laboratory over more than three decades. His commitment to this institution and his expert assistance to the curator have been invaluable for scientists, students, and visitors. 
  • ASCENSO, ALEXANDRE C.; JOÃO C. L. COSTA, ANA L. C. PRUDENTE 2019. Taxonomic revision of the Erythrolamprus reginae species group, with description of a new species from Guiana Shield (Serpentes: Xenodontinae). Zootaxa 4586 (1): 065–097 - get paper here
  • Nogueira, Cristiano C.; Antonio J.S. Argôlo, Vanesa Arzamendia, Josué A. Azevedo, Fausto E. Barbo, Renato S. Bérnils, Bruna E. Bolochio, Marcio Borges-Martins, Marcela Brasil-Godinho, Henrique Braz, Marcus A. Buononato, Diego F. Cisneros-Heredia, 2019. Atlas of Brazilian snakes: verified point-locality maps to mitigate the Wallacean shortfall in a megadiverse snake fauna. South American J. Herp. 14 (Special Issue 1):1-274 - get paper here
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