Zoological Studies 44(2): 242-251 (2005)

* To whom correspondence and reprint requests should be addressed. Some crabs (and other crustaceans) build structures (pillars, hoods, chimneys, etc.) next to their burrows (Powers and Bliss 1983). Some of these structures have been shown to function for sexual attraction, e.g., pillars (Uca: Christy 1988