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1,968 results for “morphological taxonomy”
FIGURE 10. Bivariate plots with 95 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 10. Bivariate plots with 95% confidence regions for the first two axes derived from scores of PCA analyses for male (A–B) and female (C–D) of Atractus torquatus complex.
FIGURE 13 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 13. Geographical distribution of the Atractus torquatus. Black triangle corresponds to doubtful and circles to literature records. Literature records were taken from Dixon & Soini (1977, 1986), Hoogmoed (1980) and Abuys (1984).
FIGURE 8 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 8. Pattern of the geographic variation for polymorphic qualitative character along of the Atractus torquatus complex. The number of supralabials = 1, number of infralabials = 2 and number of maxillary teeth = 3. The colour represents the frequency for each state of characters: blue correspond to six; green correspond to seven and red correspond to eight. The frequencies of the character states are from our own sample plus from the Dixon & Soini (1986). The total sample comprises 81 individuals and the traits were counted in both sides for each specimen.
FIGURE 9 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 9. Morphological variation in the hemipenial morphology along the Atractus torquatus populations. Sulcate (left) and asulcate (right) sides of the organ of FMT 1286 from municipality of Manaus, state of Amazonas, Brazil (A–B); INPA 14670 from Lago Ayapuá, Rio Purus, municipality of Beruri, state of Amazonas, Brazil (C–D); FMT 1201 from municipality of Manaus, state of Amazonas, Brazil (e–f); and MPEG 23684 from Serra do Acari, municipality of Oriximiná, state of Pará, Brazil (g–h). Scale = 5 mm.
FIGURE 7 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 7. Dorsal (left) and ventral (right) views of preserved specimens of Atractus torquatum from Parque Nacional de Amacayacu, municipality of Leticia, department of Amazonas, Colombia (A–B) and km 38 of the El Dorado–Santa Elena de Uairén road, state of Bolívar, Venezuela, photo by D. Calcaño (C).
FIGURE 6 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 6. Lateral view of head (A) and dorsal (B) and ventral (C) views of body of the holotype of Atractus davidhardi (ICN 10096) from Muniyamena, municipality of Leticia, department of Amazonas, Colombia.
FIGURE 5 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 5. General view in life of Atractus torquatus from Reserva Ducke, municipality of Manaus, state of Amazonas, Brazil, photo by M. Martins (a); Moiobamba, Rio Purus, Arumã district, municipality of Beruri, state of Amazonas, Brazil, photo by M. Senna (b); Balbina Hydroelectric Plant, municipality of Presidente Figueiredo, state of Amazonas, Brazil, photo by M. Martins (c); Parque Nacional do Pico da Neblina, municipality of São Grabriel da Cachoeira, state of Amazonas, Brazil, photo by V. Carvalho (d); Rio Madeira, Abunã district, Porto Velho, state of Rondônia, Brazil, photo by M. Senna (e); Moiobamba, Rio Purus, Arumã district, municipality of Beruri, state of Amazonas, Brazil, photo by M. Senna (g); Río Uey, middle basin of Río Cuyuní, state of Bolívar, Venezuela, photo by C. Barrio-Amorós (g–h).
FIGURE 3 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 3. Dorsal (A) and ventral (B) views of body of the holotype of Atractus janethae (ICN 10104) from La Chorera, municipality of Puerto Córdoba, department of Amazonas, Colombia.
FIGURE 4 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 4. Variation of the blotch condition on the nuchal region to the specimens of the Atractus torquatus from Balbina Hydroelectric Plant, municipality of Presidente Figueredo (FMT 1358) (A), municipality of Manaus (FMT 338) (B) and municipality of São Miguel da Cachoeira (INPA 15760) (C). All specimens come from localities in the state of Amazonas in Brazil and they are part of Guiana Shield populations.
FIGURE 2 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 2. Dorsal (A) and ventral (B) views of body of the holotype of Atractus lucilae (ICN 10105) from La Pedrera, municipality of Puerto Córdoba, department of Amazonas, Colombia.
FIGURE 1 in Morphological variation, polymorphism, and Taxonomy of the Atractus torquatus complex (Serpentes: Dipsadidae)
FIGURE 1. Dorsal (A) and ventral (B) views of body of the specimen of Atractus torquatus (ICN 10111) from municipality of Mitú, department of Vaupés, Colombia.
FIGURE 11 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 11. Geographical distribution of Atractus latifrons. Open triangles correspond to literature records and squares correspond to material examined. Star indicates the type locality. Literature records are from Boulenger (1894), Dixon & Soini (1977), Gasc & Rodrigues (1980), Hoogmoed (1980), and Chippaux (1986).
FIGURE 10 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 10. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the holotype of Atractus latifrons (BM 1946.1.6.52). Scale = 10 mm.
FIGURE 3 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 3. Variation of "tricolor in dyads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 17460) from Balbina Plant Hydroelectric, municipality of Presidente Figueiredo, state of Amazonas, Brazil. Scale = 10 mm.
FIGURE 9. Bivariate plots with 95 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 9. Bivariate plots with 95% confidence regions for the first two axes derived from scores of discriminant analyses for males (A) and females (B) of Atractus latifrons.
FIGURE 6 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 6. Dorsal and ventral views of the specimens with undefined patterns. Red body, no black spots (MZUSP 8462) (A), red body with two black bands in posterior region (FMT 1249) (B), and red body with three triads arrangements (FMT 2162) (C).
FIGURE 5 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 5. "Tricolor in tetrads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 17548) from Balbina Power Plant Hydroelectric, municipality of Presidente Figueiredo, state of Amazonas, Brazil. Scale = 10 mm.
FIGURE 7 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 7. Geographical frequency distribution of color patterns in Atractus latifrons. TRD = tricolor in dyads; TRT = tricolor in tetrads; and BIM = bicolor in monads.
FIGURE 1 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 1. "Bicolor in monads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MPEG 20363) from Parque Estadual Guarajá Mirim, municipality of Espigão d' Oeste, state of Rondônia, Brazil. Scale = 10 mm.
FIGURE 2 in Morphological variation and taxonomy of Atractus latifrons (Günther, 1868) (Serpentes: Dipsadidae)
FIGURE 2. "Tricolor in dyads" pattern in Atractus latifrons. Dorsal (A) and ventral (B) views of body; and dorsal (C), ventral (D), and lateral (E) views of head of the specimen (MZUSP 6594) from Jurupá River, state of Amazonas, Brazil. Scale = 10 mm.
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