aspell-ru software package provides Russian dictionary for Aspell, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install aspell-ru
aspell-ru is installed in your system.
Make ensure the aspell-ru package were installed using the commands given below,
$ sudo dpkg-query -l | grep aspell-ru *
You will get with aspell-ru package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Text Processing |
| Package | aspell-ru |
| Version | 0.99g5-20 |
| Description | Russian dictionary for Aspell |
| Sub Section | text |