Protobothrops flavirostris GRASSBY-LEWIS, BRAKELS, MAURY, SITTHIVONG, FROHLICH, PAWANGKHANANT, IDIIATULLINA, NGUYEN & POYARKOV, 2025
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Protobothrops flavirostris
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| Higher Taxa | Viperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: Vang Vieng lance-headed pit viper Lao: Ngu Phao Ka Ba Khor Kop (ງູເພາົກະບາຄກໍບົ) Russian: Laosskiy habu (Лаосский хабу) |
| Synonym | Protobothrops flavirostris GRASSBY-LEWIS, BRAKELS, MAURY, SITTHIVONG, FROHLICH, PAWANGKHANANT, IDIIATULLINA, NGUYEN & POYARKOV 2025: 49 |
| Distribution | Laos (Vientiane) Type locality: environs of the Khan Kham Cave in Vang Vieng District, Vientiane Province, Laos (elevation 360 m a.s.l.; approximate coordinates: 18.90°N, 102.43°E; exact coordinates are not released for conservation purposes) |
| Reproduction | |
| Types | Holotype. NUOL R.2024.89, adult female, collected by R.J. Grassby-Lewis, P. Brakels, N. Maury and S. Sitthivong on 21 October 2024. |
| Diagnosis | Diagnosis: The new species Protobothrops flavirostris sp. nov. differs from other members of the genus Protobothrops by the following combination of the morphological characters: dorsal scales in 23–21–17 rows, all keeled; ventral scales 215; subcaudal scales 79, all paired; supralabials 7–8; infralabials 10; horn-like projection on supraocular absent; head triangular with a typical lance-shaped pattern on dorsal surface; three faint dark vertical stripes on snout; head blackish-brown with rostral, nasals, preoculars, loreals and the two anterior supralabials, as well as the anterior parts of supraoculars yellow-orange; dorsal surfaces of body and tail brown or greyish-brown, dorsum with large dark reddish-brown cross-shaped blotches, edged with black, somewhat fused together forming an interrupted zigzag line; and a row of large brown ventrolateral blotches on each side. (Grassby-Lewis et al. 2025) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 8168 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Distribution: see map in Grassby-Lewis et al. 2025: 45 (Fig. 1). |
| Etymology | The specific name “flavirostris” is a Latin adjective in the nominative singular, masculine gender, derived from Latin words “flāvus” for “yellow” and “ros- trum” for “snout” or “beak” and is given in reference to the characteristic yellowish colouration of the snout in the new species. |
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