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Siagonodon exiguum

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Range: southwest French Guiana to northwestern Pará, Brazil

Described only in 2023 from a handful of specimens (none of which were apparently photographed alive; see source for preserved specimen images), this blindsnake species is a rare inhabitant of the Amazon Basin from Pará north to French Guiana. With only 2 disparate collection localities their true range and localization are unknown. It can reach at least 19 cm in length, with a slender cylindrical build and smooth scales. The head is slightly dorsolaterally flattened, but most distinctly possesses a concave snout tip that often sports 2 pointed projections, one on either side of the rostral, a shape not seen in any other blindsnakes. The tail is short and mildly tapered, with no terminal spine. Dorsal scale count is 255-289, scale row count 14 midbody and midtail. Coloration is unfortunately unknown due to description being based on dead specimens only, but the head and cloacal shield are paler than the rest of the body. The snout shape of this species separates it from all its relatives if not all blindsnakes, as well as the lack of terminal spine and no reduction in scale count on the midtail, among other traits.

 

Habitat: low-elevation rainforest on drier plateaus, underground or in leaf litter.

 

Prey: likely small soft-bodied invertebrates such as ant and termite larvae.

 

Lifespan and reproduction: lifespan unknown, likely under 10 years. Oviparous, capable of laying at least 6 elongate eggs.

 

Sources: https://vertebrate-zoology.arphahub.com/article/98170/

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