Do you know this artist?

Well, I'm having a harder time finding out anything about the artist who made this print than I thought I would. It looks to me like the signature says "J. Pasos M.," though I can't be 100% sure of that. Actually, I'm not even sure if the artist is from Costa Rica or not. The title of the piece is "Jaguar y la luna," which is also the title of a book by Nicaraguan author Pablo Antonio Cuadra. Maybe someone out there recognizes the style of work and name and could point me in the direction of more information about the artist who made this?

"Jaguar y la luna"

Closeup of artist's signature