Pyrearinus candelarius is a species of click beetle (family Elateridae).

The eyes are large and the pronotum is yellowish or pale brown, with a blackish area in the middle and small backward-pointing teeth.

These beetles are bioluminescent by means of two luminescent light organs at the posterior corners of the prothorax, emitting green light, and a large abdominal area on the first segment, emitting yellow light.

This species can be found in Argentina and Brazil.

This click beetle article is a stub.