Triprion spatulatus
It is endemic to the Pacific lowlands of western Mexico between the Sinaloa and Oaxaca states . 
<triplet> Mexico <subj> Sinaloa <obj> contains administrative territorial entity <subj> Oaxaca <obj> contains administrative territorial entity <triplet> Sinaloa <subj> Mexico <obj> located in the administrative territorial entity <triplet> Oaxaca <subj> Mexico <obj> located in the administrative territorial entity