Mordellistena y-nigrum

Mordellistena y-nigrum is a species of beetle in the family Mordellidae. It was described in 1937 by Eugene Ray from Puerto Rico. It is named for its diagnostic characteristic, a Y-shaped black spot on the region of the elytra surrounding the scutellum.

This beetle measures 2.25 mm in length, or 3.1 mm when including the anal stylus. The antennae are 1 mm long.