Psilothrix viridicoerulea is a species of soft-winged flower beetle belonging to the family Melyridae, subfamily Dasytinae.

[1] This beetle is mainly present in most of Europe (Belgium, Netherlands, Denmark, Italy, Spain, Portugal, Greece, Croatia, France, Germany, Ireland, Latvia, Malta, North Macedonia, Slovenia, Sweden and Switzerland) and in the Near East.

Pronotum and elytra are thickly, deeply and strongly punctuated and covered of black erect hairs.

[3] Pygidium (last male tergite) shows a deep but small V-shaped notch.

They bore longitudinal galleries in the stems of some annual weeds (Ferula, Magydaris, Carlina, Cirsium, etc.).