''Tyrpophloeus populi'' is a species of
bark beetle
A bark beetle is the common name for the subfamily of beetles Scolytinae. Previously, this was considered a distinct family (Scolytidae), but is now understood to be a specialized clade of the "true weevil" family (Curculionidae). Although the ...
implicated in
sudden aspen decline.
This beetle is tiny; adults measure about 2 millimeters.
References
Scolytinae
Beetles described in 1915
{{Scolytinae-stub