$ sudo apt-get update
$ sudo apt-get install aspell-eu-es 

aspell-eu-es is installed in your system.

Make ensure the aspell-eu-es package were installed using the commands given below,

$ sudo dpkg-query -l | grep aspell-eu-es *

You will get with aspell-eu-es package name, version, architecture and description in a table

aspell-eu-es package basic information: