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36 results for “Helicops”
FIGURE 5 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 5. Distributional records of Helicops species occurring in the Pantanal and neighboring ecoregions. Symbols denote the type-locality of Helicops boitata (black triangle), as well as localities with vouchers of H. angulatus (white crosses), H. leopardinus (white diamonds), and H. polylepis (white circles). The white circle marked with an asterisk refer to a specimen determined as Helicops polylepis from São Domingos, state of Mato Grosso (IBSP 31712), destroyed by fire on May 15th of 2010.
FIGURE 4 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 4. General views of dorsum, venter and detail of head of the holotype of Helicops boitata (UFMT-R 11940) in life (SVL 437 mm, tail length 205 mm), from the margins of Transpantaneira Road, region of Poconé, state of Mato Grosso, Bra- zil.
FIGURE 1 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 1. Phylogenetic relationships of the tribe Hydropsini (comprising one species of Hydrops Wagler, 1830, one species of Pseudoeryx Fitzinger, 1826, and 10 species of Helicops Wagler, 1828) based on a concatenated dataset of the 12S, 16S, BDNF, C-mos, and NT3 sequence data. Numbers at nodes indicate the values of Bayesian Credibility/Maximum Likelihood bootstrap. The bar represents the number of expected changes per site in the Bayesian Analysis. The name Helicops pictiventris is currently a junior synonym of H. infrataeniatus, but it appears in the tree exactly as the pertinent sequences appear in the GenBank dataset (see Grazziotin et al. 2012).
FIGURE 3 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 3. Dorsal, ventral, and lateral (left/right) views of the head of the holotype of Helicops boitata (UFMT-R 11940), from the margins of Transpantaneira Road, region of Poconé, state of Mato Grosso, Brazil. Scale bar = 10 mm.
FIGURE 2 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 2. Dorsal and ventral views of the holotype of Helicops boitata (UFMT-R 11940), from the margins of Transpantaneira Road, region of Poconé, state of Mato Grosso, Brazil. Scale bar = 100 mm.
FIGURE 6 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 6. Sulcate (left) and asulcate (right) faces of the fully everted and maximally expanded hemipenis (right organ) of the holotype of Helicops boitata (UFMT-R 11940), from the margins of Transpantaneira Road, region of Poconé, state of Mato Grosso, Brazil. Scale bar = 10 mm.
FIGURE 7 in Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands
FIGURE 7. The holotype of Helicops boitata (UFMT-R 11940) in the wild, as found in the moment of collection (above), and a general perspective of the habitat in the collection site on May 2016 (below), at Pantanal wetlands in the margins of Transpan- taneira Road, region of Poconé, state of Mato Grosso, Brazil.
FIG. 5 in A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil
FIG. 5.—Locality records of Helicops nentur sp. nov. in the state of Minas Gerais, Brazil (insert). A color version of this figure is available online.
FIG. 2 in A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil
FIG. 2.—Holotype of Helicops nentur sp. nov. (UFMG 2486): head in dorsal (A), ventral (B), left (C), and right (D) view. Scale bar = 5 mm. A color version of this figure is available online.
FIG. 1 in A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil
FIG. 1.—Holotype of Helicops nentur sp. nov. (UFMG 2486): dorsal (A) and ventral (B) view. Scale bar = 20 mm. A color version of this figure is available online.
FIG. 3 in A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil
FIG. 3.—Right hemipenis of a paratype of Helicops nentur sp. nov. (MZUFV 960) fully everted and almost maximally expanded: sulcate (A) and asulcate (B) side. Scale bar = 10 mm. A color version of this figure is available online.
FIG. 4 in A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil
FIG. 4.—Paratype (ZUFMS-REP 2291) of Helicops nentur sp. nov. immediately postmortem in (A) dorsal view and (B) ventral view. A color version of this figure is available online.
FIG. 6 in A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil
FIG. 6.—Phylogenetic relationships of sampled species of Helicops based on (A) 16s rRNA and (B) C-mos sequence data. Numbers at nodes indicate the bootstrap values/posterior probabilities; the bars below each cladogram indicate base substitution rate for each gene (# of substitutions per site). Hŋdrops triangularis and Pseudoerŋx plicatilis were used as outgroups.
Divergent specialization of simple venom gene profiles among rear-fanged snake genera (Helicops and Leptodeira, Dipsadinae, Colubridae) datasets
<p>Table S1: GenBank accession numbers for mitochondrial sequences by species.</p>
TABLE 1 in New specimens of Helicops boitata (Serpentes: Dipsadidae: Hydropsini), with data on morphological variation and behavior
<p><b>TABLE 1.</b> Meristic and morphometric variation for all known specimens of <i>Helicops boitata</i>. The asterisk (*) indicate the holotype.</p><table><tbody><tr><th><b>Specimen</b></th><th><b>Sex</b></th><th><b>Total length</b></th><th><b>Tail length</b></th><th><b>Dorsals</b></th><th><b>Ventrals</b></th><th><b>Subcaudals</b></th><th><b>Supralabials</b></th><th><b>Infralabials</b></th><th><b>Temporals</b></th><th><b>Maxillary teeth</b></th><th><b>Cloaca</b></th><th><b>Nasal</b></th></tr></tbody><tbody><tr><th><b>UFMT-R 11490*</b></th><td>Male</td><td>642</td><td>205</td><td>25/25/21</td><td>113</td><td>68</td><td>10/10</td><td>13/12</td><td>2+2+3 / 1+2+3</td><td>20+2</td><td>Entire</td><td>entire</td></tr><tr><th><b>UFMT-R 12504</b></th><td>Male</td><td>495</td><td>143</td><td>25/25/21</td><td>113</td><td>66</td><td>10/10</td><td>12/13</td><td>2+3+4 / 2+4+3</td><td>20+2</td><td>Divided</td><td>Semi-divided</td></tr><tr><th><b>UFMT-R 12505</b></th><td>Female</td><td>383</td><td>86</td><td>25/25/21</td><td>118</td><td>52</td><td>11/10</td><td>13/13</td><td>2+2+3 / 2+2+3</td><td>20+2</td><td>Divided</td><td>Semi-divided</td></tr><tr><th><b>UFMT-R 12506</b></th><td>Male</td><td>598</td><td>177</td><td>23/25/21</td><td>112</td><td>66</td><td>9/10</td><td>12/11</td><td>1+3+3 / 1+2+3</td><td>20+2</td><td>Divided</td><td>Semi-divided</td></tr><tr><th><b>UFMT-R 12520</b></th><td>Female</td><td>618</td><td>153</td><td>25/25/21</td><td>–</td><td>56</td><td>10/10</td><td>13/12</td><td>–</td><td>19+2</td><td>Divided</td><td>Semi-divided</td></tr><tr><th><b>UFMT-R 12521</b></th><td>Male</td><td>639</td><td>197</td><td>25/25/21</td><td>115</td><td>67</td><td>10/10</td><td>13/12</td><td>2+3+5 / 2+3+3</td><td>19+2</td><td>Entire</td><td>Semi-divided</td></tr></tbody></table>
FIGURE 3 in New specimens of Helicops boitata (Serpentes: Dipsadidae: Hydropsini), with data on morphological variation and behavior
FIGURE 3. Field images of the site during the collection of the new specimens of Helicops boitata: (A) general perspective of the collection site on 16 October of 2019, when four out of the five specimens were found; (B) drone-taken image of the collection site of the five new specimens, and (C) a detailed view of UFMT-R 12506 in the field, immediately after collection. Photos by C. Stŗssmann (A), Benedito Pio da Silva Campos Neto, and (C) Evaldo Alvarenga Jr.
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