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Southern Sharpnose Snake
Xenoxybelis boulengeri (Procter, 1923)
Also calledAmazonas-spidssnog (dan)
First described in: Procter, Joan B. On new and rare reptiles from South America.
Descriptions from checklists and floras indexed by GBIF
description
Morphometric and meristic characters. Snout-vent length 615 – 728 mm (adults> 500 mm, n = 6). Tail length 340 – 506 mm (n = 6). Smooth dorsal scales 17 - 17 - 15 rows (100 %), without apical pits. Ventral scales 196 – 209 (x ̅ = 201). Subcaudal scales 163 – 187 (x ̅ = 180). Divided cloacal plate (100 %). Loreal 1 (100 %). Preoculars 1 – 2 (1 / 1 in 71 % of specimens, and 2 / 2 in 29 %). Postoculars 2 – 3 (2 / 2 in 57 % of specimens, and 3 / 3 in 43 %). Generally temporals 1 + 1 (2) + 2 and 1 + 2 + 3 or less. Supralabials 6 – 7 (6 / 6 in 86 % of specimens and 6 / 7 in 14 %); fourth contacting the orbit. Infralabials 7 – 8 (7 / 7 in 57 % of specimens, 7 / 8 in 29 % and 8 / 8 in 14 %); the first four contacting the first pair of chin shields (100 %) (Table 4) and fourth and fifth contact the second pair of chin shields (100 %).
Vine snakes (Oxybelis) and Sharpnose snakes (Xenoxybelis) (Squamata, Serpentes) from lowlands of Bolivia, with first records of Oxybelis inkaterra for the country
description
Description. Smooth dorsal scales most frequently in 17 / 17 / 15 rows (n = 18), ranging from 17 / 17 / 13 (n = 1) to 15 / 17 / 13 (n = 1), without apical pits. Ventrals: 189 – 202 (n = 10) in males; 190 – 207 (n = 6) in females. Subcaudals divided: 174 – 198 (n = 10) in males; 180 – 209 (n = 6) in females. Divided cloacal plate. Cloacal glands of males and females reach the 4 th and 5 th subcaudals, respectively. Snout-vent length ranging from 561 – 721 mm (x = 632.4; SD = 55.1; n = 10) in males; 592 – 790 mm (x = 695.5; SD = 78.0; n = 7) in females. Tail length ranging from 330 – 472 mm (x = 410.5; SD = 62.6; n = 10) in males; 424 – 508 mm (x = 467.1; SD = 40; n = 7) in females. Elongate head, distinctly wider than neck, head length ranging from 20.3 – 25.2 mm (x = 22; SD = 1.6; n = 9) in males; 24.7 – 30,0 mm (x = 26.2; SD = 2.2; n = 7) in females. Distance from the eye to anterior of rostral plate ranging from 6.7 – 8.3 mm (x = 7.43; SD = 0.57; n = 9) in males; 8.3 – 10.3 mm (x = 8.8; SD = 0.76; n = 7) in females. Head width ranging from 6.6 – 7.9 mm (x = 7.2; SD = 0.5; n = 7) in males; 8.2 – 9,23 mm (x = 8.7; SD = 0.6; n = 7) in females. Head height ranging from 5.6 – 7.6 mm (
Morphological variation in Xenoxybelis boulengeri (Procter, 1923) (Serpentes, Xenodontinae, Philodryadini)
Where it has been recorded
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
Searching the stacks…
Every page naming Xenoxybelis boulengeri in the Biodiversity Heritage Library →
From the GBIF Backbone Taxonomy and occurrence records (GBIF.org), with Wikipedia and the Source Library. GBIF species 2456975.