Yucatán, Mexico. June 29, 2016.
This snake is found in the upper third of the Yucatán peninsula, and I suspect it is far more common than sightings would indicate. It is similar to the larger and more far-reaching Imantodes cenchoa, but I. tenuissimus lacks the enlarged row of vertebral scales found in I. cenchoa.
My Flickr album for Yucatán 2016 is here.
HerpMapper records for this species are here.