Cydnus aterrimus is a species of burrowing bug in the family Cydnidae. It is found in the Caribbean, Europe and Northern Asia (excluding China), North America, and Southern Asia.
Further reading
Book: A Revision of Oriental Burrower Bugs (Heteroptera: Cydnidae). 1994. Lis . Jerzy A.. Upper Silesian Museum. 978-83-901173-1-7.