It is a word of Nahuatl origin ( comes from pinacatl), which means black beetle. It is a way of calling in Mexico the black beetles of the genus Eleodes and belonging to the family Tenebrionidae . Black cuckoo. It is also the name of a desert, which is once part of the Great Desert of Sonora or Altar Desert and a volcanic sierra in the State of Sonora in Mexico. It is also the name of a Mexican Biological Reserve in that same area.
The reference where I read what of pinacate e:nieve Rodriguez Valley 2005. Proverbs words of nahuatl origin. Revista de 40 5 popular literatures; 2 ):175-193http://www.rlp.culturaspopulares.org/textos/10/01-Rodriguez.pdfDice: " pinacate. From the nahuatl. pinacatl do shameful cane does of pinahua do be ashamed does and acatl do cane do.?????? Wingless insect; big and black beetle that grows in damp places. Says few scopes, lights short, awkward or insignificant person do?