Male Horseshoe Crab Female Horseshoe Crab
Diagram showing the pedipalps or hook-like claws on the male crab. These are used to attach to the female during spawning
pedipalps		 Diagram showing the female claw, which is not as hooked but rather straight. Also shown is the female genetalia
Female claw &
female geital pores
Photo showing the prosome curvature
Prosoma curvature		 Photo showing attached crabs they attach head to tail
Attached pair of crabs

Additional References
Horseshoe Crab Home