The common red soldier beetle, Rhagonycha fulva, is a species of soldier beetle (Cantharidae).
The common red soldier beetle will grow up to a centimetre. Nearly all their body is coloured red yellowish. Only the last bit of the elytra is black. The body is flat and elongated. The chitin armour is very soft. The black thread-like antennae are also relatively long. The equally long legs have an orange colour, which become notably darker only at the end.