Paikwaophis kruki

Paikwaophis kruki is a small, non-venomous snake characterized by a short head, robust body, and smooth scales arranged in 17 dorsal rows without reduction. The tail is short, comprising about 13% of the total length. Coloration includes a light brown dorsum, bold black lateral stripes, and a light blue streak along the lower sides. The skull and vertebrae suggest a fossorial or semi-fossorial lifestyle, with features such as a blunt snout, reduced postorbital bone, smooth neural spines, and absence of hypapophyses on the posterior vertebrae. The species has a distinctive dental pattern, including seven prediastemal and two postdiastemal maxillary teeth, as well as additional teeth on the palatine, pterygoid, and dentary bones. Although phylogenetically closest to Xenopholis, Paikwaophis differs in several ways, including a higher number of trunk vertebrae, absence of grooved fangs, a larger and vertically ovoid lacrimal foramen, and a distinct structure of the postorbital bone.

Paikwaophis kruki is endemic to a mossy cloud forest habitat near Wei-Assipu-tepui in western Guyana, at an elevation of ~1180 m. The region features dense leaf litter, peaty soils, and a humid, epiphyte-rich canopy. The female holotype is the only known specimen.

The species is presumed fossorial or semi-fossorial, inferred from its cranial morphology and habitat. Unlike Xenopholis, no defensive behaviors such as body flattening have been observed. The holotype contained lizard scales in its digestive tract, indicating that its diet includes lizards.

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