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46 results for “Leptophis”
FIGURE 21 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 21. Color patterns and color tones variability of Leptophis marginatus: Male holotype AMNH 5514, SVL 1245 mm, from "Paraguay". Note that the dorsal coloration of the head and anterior portion of the body persists throughout the length of the body in this specimen. Photo by N.R. Albuquerque.
FIGURE 23 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 23. Color patterns and color tones variability of Leptophis nigromarginatus: (A) dorsal view of the head and (B) ventral view of the body of the holotype (BMNH 1946.1.5.7) from "Upper Amazons". Arrow indicating ventral scale edged anteriorly and laterally with greenish blue, a characteristic thought by Oliver (1948: 246) to be typical of L. a. ortoni. Note two black spots in center of each parietal scale, a larger black spot on right supraocular scale, and two smaller spots on left supraocular scale; (C) KU 112279 and (D) KU 155512, a female and a male, respectively, from Santa Cecília, Ecuador. Both show distinct differences in the prominence of supracephalic black borders and spots, being both more prominent in the female specimen. Scale bar = 0.5 cm. Photos by N.R. Albuquerque (A –B) and A. Motta (C–D).
FIGURE 20 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 20. Color patterns and color tones variability of Leptophis marginatus: (A) IBSP 63731 from the municipality of Presidente Epitácio, state of São Paulo, Brazil; and (B) INALI 969, SVL 1020 mm, a male specimen from province of Santa Fé, Argentina. Note dorsal bright green coloration similar to specimens from Paraguay and Uruguay. Four median rows of dorsal scales of the tail are keeled in this specimen (indicated by the arrow), at least on anterior portion of the tail. Photos by O.A.V. Marques (A) and A.J. Giraudo (B).
FIGURE 19 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 19. Color patterns and color tones variability of Leptophis marginatus: Male holotype AMNH 5514, SVL 1245 mm, from "Paraguay". Dorsal (A) and (B) lateral views of the head. Scale bars = 0.5 cm. Photos by N.R. Albuquerque.
FIGURE 18 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 18. Distribution of Leptophis bolivianus, L. liocercus, L. marginatus, and L. nigromarginatus based upon the material examined.
FIGURE 16 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 16. Color pattern and color tones of Leptophis liocercus: Male holotype AMNH 3531, SVL 1144 mm (incomplete tail), from an unspecified locality in the tropical forests of Brazil. Dorsal (A) and (B) ventral views of the head; dorsal (C) and ventral (D) views of the holotype. Scale bars = 0.5 cm. Photos by N.R. Albuquerque.
FIGURE 32 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 32. Color pattern and color tones of Leptophis praestans: Profile view of the UMMZ 74851 from El Petén, Guatemala. This juvenile specimen retains traces of a postocular stripe (indicated by the arrow) reduced to black margin on eighth and ninth supralabials, occupying lower one-third of anterior temporal and lower one-third of posterior temporal, suggesting a possible ontogenetic change in L. praestans. This condition is absent in adult specimens. Scale bar = 0.5 cm. Photo by N.R. Albuquerque.
FIGURE 30 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 30. Color pattern and color tones of Leptophis praestans: UTA 12685 from Blue Creek Village, district of Toledo, Belize. Arrow indicating yellow chevron-shaped marks on the interstitial skin. Photo by W.W. Lamar, courtesy of J.A. Campbell.
FIGURE 17 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 17. Color pattern and color tones of Leptophis liocercus: (A) MZUFV 2082, SVL 1594 mm, a female from Linhares, Espírito Santo. Note the head scales slightly edged with black (indicated by the arrow); (B) IBSP 88574, SVL 1072 mm, a female from the municipality of São Mateus, state of Espírito Santo, Brazil. Photos by M.R. Moura (A) and R.D. Moysés (B).
FIGURE 13 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 13. Paratypes of Leptophis coeruleodorsus. (A) USNM 59931 from "Trinidad". Note the contact between the last supralabial with the anterior temporal. (B) MCZ 11994 and (C) MCZ 11995 from Tobago, near Milford Bay, SW Tobago. Note the subacuminate snout in profile and the rostral barely visible from above in MCZ 11994 and MCZ 11995, respectively (indicated by the arrows); (D) A specimen from San Juan de los Morros en el Estado Guarico, Venezuela, swallowing an Emeraldeyed Treefrog Boana crepitans (Wied-Neuwied), showing a "normal" rounded snout. Courtesy of Division of Amphibians & Reptiles/NMNH/Smithsonian Institution (A), Courtesy of the Museum of Comparative Zoology and Harvard University (B and C), M.A.Natera-Mumaw (D).
FIGURE 15 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 15. Color pattern and color tones of Leptophis dibernardoi: An uncataloged CHUFC female from Parnaíba, state of Piauí, Brazil. Photo by R.W. Ávila.
FIGURE 14 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 14. Lateral view of the left side of head of the holotype of Leptophis haileyi (CAS 245313). Note that an azygous scale (indicated by the arrow) prevents contact between the last supralabial and the anterior temporal. Photo by E.J. Ely.
FIGURE 12 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 12. Color patterns and color tones of Leptophis coeruleodorsus: (A) An uncollected specimen from Parque del Este, Caracas D.F., Venezuela; (B) An uncollected specimen from Villanueva, Casanare, Colombia; in these specimens, the middorsal area is five and nine scales wide, respectively, at least on the anterior portion of the body; (C) a MVURG specimen (catalog number unknown) from San Juan de los Morros, El Castrero, state of Guarico, Venezuela. Brackets indicate dorsolateral stripe at rows 2–5 and 2–3, respectively. Photos by L.A. Rodríguez J. (A), W. L. Riaño (via Naturalista under license CC-BY-NC 4.0) and M.A. Natera-Mumaw (C).
FIGURE 11 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 11. Sulcate (left) and asulcate (right) sides of the hemipenes of Leptophis bolivianus (AMNH 104564) from Estancia Yutiole, department of Beni, Bolivia (A–B); L. coeruleodorsus (TCWC 46262) from municipality of San Fernando de Apure, state of Apure, Venezuela (C–D); L. liocercus (CZGB 1149) from municipality of Ilhéus, state of Bahia, Brazil (E–F). Note that although the hemipenis of CZGB 1149 is slightly bilobed, its sulcus spermaticus remains unbifurcated until the apical portion of the organ; L. nigromarginatus (LPHA 1731) from municipality of Santarém, state of Pará, (G–H); and (TCWC 42177) from Centro Union, departament of Loreto, Peru (I–J). Although the first row of basal spines is small in the four species, the two spines adjacent to sulcus spermaticus are larger than those in other rows. Scale bars = 0.5 cm. Photos by D. Kizirian (A–B) and N.R. Albuquerque (C–J).
FIGURE 7 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 7. Color patterns and color tones variability of Leptophis bocourti: (A) USNM 285488, an adult from Santo Domingo de los Colorados, 47 km S of Centro Cientifico Río Palenque, province of Los Rios and (B) QCAZ 8023, a juvenile from province of Durango, Ecuador. Used under CC BY-NC-ND 4.0 https://bioweb.bio/galeria/Album/Leptophis%20ahaetulla. Note that the dorsal color in adults is essentially green in life, but in the juvenile specimen, the color of scales in dorsal rows 1–2 is yellow (indicated by the arrow). Further, the dorsum of the juvenile lacks the small, irregularly shaped black spots of adults, suggesting a distinct ontogenetic color change. Photos by R.W. McDiarmid (A) and S. Ron (B).
FIGURE 10 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 10. Color patterns and color tones variability of Leptophis bolivianus: (A) Paratype FMNH 35614, SVL 727 mm, (B) Paratype FMNH 35620, SVL 1118 mm, (C) Holotype UMMZ 67973, SVL 1079 mm and (D) Paratype UMMZ 67976b, SVL 755 mm—all with incomplete tail—showing the variation in the distribution, number and extent of black spots on the supraocular and parietal scales (see text for discussion); (E) AMNH 141443, SVL 367 mm, a female from San Antonio de Parapeti, Santa Cruz, Bolivia exhibiting the banded pattern typical of juveniles of most species of Leptophis, scale bar = 0.5 cm; (F) Female paratopotype that also bears the USNM number 67977, note that the dorsal scales of its tail are keeled only from the point of reduction from six to four rows (indicated by the arrow), scale bar = 1 cm; (G) Holotype UMMZ 67973, SVL 1079 mm showing the ventral scales not edged. Courtesy of The Field Museum, FMNH 35614 and FMNH 35620 (C), D. Kizirian (E) and N.R. Albuquerque (F–G).
FIGURE 2 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 2. Color patterns and color tones variability of Leptophis ahaetulla: (A) An uncollected specimen from road between Georgetown and Iwokrama, Guyana; (B) MPEG 19434 (SVL 688 mm) from Santo Antônio do Tauá, state of Pará, Brazil; (C) An uncollected specimen from Santarém, state of Pará, Brazil; (D) MPEG 24491 (SVL 543 mm) from Marabá, state of Pará, Brazil; (E) An uncollected specimen from Santarém, state of Pará, Brazil; and (F) an uncatalogued IBSP specimen from Peixe, state of Tocantins, Brazil. Note the variation in the extent, width and pigmentation of the pre- and postocular stripes. Photos by A. Srikanthan (A), A. Maciel (B), R. de Fraga (C), N.R. Albuquerque (D), R. Kawashita-Ribeiro (E), and A. Costa (F).
FIGURE 8 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 8. Distribution of Leptophis bocourti, L. coeruleodorsus, L. occidentalis, L. praestans, and L. urostictus based upon the material examined.
FIGURE 9 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE 9. Color patterns and color tones variability of Leptophis bolivianus: MNKR 4332 (SVL 920 mm), a female from Estancia Caparu, Provincia Chiquitos, Santa Cruz, Bolivia. Note the (A) general color pattern and the (B) postocular extending beyond seven scales onto the nuchal region (indicated by the arrow) in this specimen, respectively. Photos by L. Gonzales.
FIGURE. 1 in Taxonomic revision of the parrot snake Leptophis ahaetulla (Serpentes, Colubridae)
FIGURE. 1. Leptophis ahaetulla (MPEG 24491, SVL 543 mm) from Marabá, Pará state, Brazil. Note the two Light Grass Green (109) dorsolateral stripes separated from each other by a Yellow Ocher (14) vertebral stripe. Photo by A. Maciel.
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