Pyrophorus punctatissimus is a species of click beetle (family Elateridae).

Pyrophorus punctatissimus can reach a length of about 30 millimetres (1.2 in).

The pronotum shows a long backward-pointing tooth.

These beetles are bioluminescent by means of two light organs at the posterior corners of the prothorax, and a broad area on the dorsal region of the abdomen, hidden by the wings and seen when flying.

This species can be found in Bolivia, Argentina, Brazil, Paraguay, Uruguay and Cuba.