Do brown recluse spiders die after biting?

No. Who told you that? The bite victim is in danger of dying from it, but the brown recluse is not. Answer: No The recluse does not die. The victim is not necessarily in danger from dying. I've been bitten twice by a recluse and am well alive. Here is what Wiki says: Most bites are minor with no necrosis. However, a small number of bites produce severe dermonecrotic lesions, and, sometimes, severe systemic symptoms. These symptoms can include organ damage, and occasionally even death; most fatalities are in children under 7 or those with a weaker than normal immune system.