As their names imply, the light spider markings are lights shaped to resemble spiders. They are always round on the edges of ledges.
Light spider marking are portrayed as stage background visuals for Hang Castle and they exhibit the same behavior as the skull lights seen in Mystic Mansion. Light spider markings have no effect on the gameplay. However, they always refer to an invisible path, moving platforms, a trail of Rings or anything else of importance that the player must notice.
- Kaizen Media Group (1 June 2004). Sonic Heroes: Prima's Official Strategy Guide. Prima Games. p. 93. ISBN 978-0761544494. "After bouncing up using the spring, destroy the Solid Flappers and turn to the right to continue on. The light spider markings shows you which way to go."