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Rena dulcis, also known as Texas blind snake, Texas slender blind snake, or Texas threadsnake, is a blind snake species endemic to the southwestern United States and northern Mexico. Three subspecies are currently recognized, including the nominate subspecies described here.</ref>
Texas blind snakes appear much like shiny earthworms. They are pinkish-brown (puce) in color with a deep sheen to their scales. They appear not to be segmented. Their eyes are no more than two dark dots under the head's scales. Their mouths are small and set in an underbite.
Adults can grow to approximately 27 cm (11 in) in total length, including the tail.
Texas blind snakes spend the vast majority of their time buried in loose soil, only emerging to feed or when it rains and their habitat floods with water. Blind snakes are often found after spring rains and mistaken for earthworms. If handled they usually squirm around and try to poke the tip of their tail into the handler. This is a completely harmless maneuver and likely serves as a distractive measure. Their mouths are far too small to effectively bite a human being.
Common names for R. dulcis include the following: burrowing snake, eastern worm snake, plains blind snake, Texas blind snake, Texas Rena, Texas slender blind snake, Texas threadsnake, Texas worm snake, worm snake.
R. dulcis is found in the southwestern United States and northern Mexico. In the USA it occurs in southwestern Kansas, western Oklahoma including the panhandle, central & south Texas west through southern New Mexico to southeastern Arizona. In northern Mexico it has been reported in Chihuahua, Coahuila, Tamaulipas, Nuevo León, San Luis Potosí, Veracruz, Querétaro, Hidalgo and Puebla. The type locality given is "Between San Pedro and Camanche Springs Tex." (Comanche Springs, Texas).
Gauging wild blind snake populations is virtually impossible due to their secretive nature. However, like many other native Texas species, R. dulcis is known to be detrimentally affected by the red imported fire ant.
- List of leptotyphlopid species and subspecies.
- Leptotyphlopidae by common name.
- Leptotyphlopidae by taxonomic synonyms.
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