Sibon nigralbus ARTEAGA, FOUQUET, DE SOUSA & AVILA, 2025
Can you confirm these amateur observations of Sibon nigralbus?
Sibon nigralbus
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| Higher Taxa | Colubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: black and white snail-eating snake |
| Synonym | Sibon nigralbus ARTEAGA, FOUQUET, DE SOUSA & AVILA 2025 |
| Distribution | French Guiana Type locality: Mont Itoupé, French Guiana (3.02647, -53.07983; 800 m a.s.l.). |
| Reproduction | |
| Types | Holotype: MNHN-RA-2024.0004 (AF3606) (Figs 4, 6), adult male collected by Antoine Fouquet, Elodie Courtois, Benoit Villette and Mael Dewynter, on 07 January 2016. Paratypes: MNHN-RA-2024.0005 (AF1433), adult male collected by Elodie Courtois on 16 December 2013 at RN2 PK80, French Guiana (4.38526 -52.30456; 90 m a.s.l.). MNHN-RA-2024.0006 (RG86), adult female collected by Michel Blanc on 18 January 2013 at RN2 PK40, French Guiana (4.57989 -52.39734; 90 m a.s.l.). MNHN- RA-2024.0007 (RG98), adult male collected by Michel Blanc on 15 October 2016 at RN2 PK36, French Guiana (4.60042 -52.40194; 90 m a.s.l.). MNHN-RA-2024.0008 (RG9) adult male collected by Michel Blanc on 18 June 2001 at CD5 PK2, French Guiana (4.79283 -52.43410; 60 m a.s.l.). |
| Diagnosis | Diagnosis: Sibon nigralbus sp. nov. is placed in the genus Sibon based on phylogenetic evidence (Fig. 1) and on having the penultimate supralabial conspicuously higher than all other supralabials. The species is diagnosed based on the following combination of characters: (1) 14–15/15/15 smooth dorsals with enlarged vertebral row (2× as wide as adjacent rows); (2) loreal and prefrontal in contact with orbit; (3) 7–8 supralabials, 4th and 5th, or 5–6, or 6–7 contacting orbit; (4) 8–9 infralabials, 1st–6th in contact with chinshields, first pair of infralabials in contact behind symphysial; (5) 194–200 ventrals in males, 199 in the single female; (6) 99–114 divided subcaudals in males, 101 in the single female; (7) dorsal background color gray with 47–67 black bands (1–3 dorsal black scales per band separated by 2–3 gray dorsal scales) boarded by light gray speckles (Fig. 5), ventral surfaces cream white 53–64 black bands interrupted medially and with smaller black speckles, dorsal aspect of head black with white speckles dorsally and white blotches laterally, throat with cream white background with black blotches and spots, iris light gray variegated with black reticulations; (8) 360–447 mm SVL in males, 493 mm in the single female; (9) 152–175 mm TL in males, 202 mm in the single female. (Fouquet 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 4221 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | |
| Etymology | Named after Latin nigrum (= “black”) and albus (= “white”). It refers to the color pattern of the species which consists of a succession of white, gray, and black bands. |
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