Generally strong, curved and toothed dactylus suited for catching prey (e.g., Squilla) [Moore and McCormick, 1969].
Toothed dactyl, generally strong, curved backward on propodus, modified for quick motion in catching prey [McLaughlin, 1980].
(Order Stomatopoda):
Large grasping claw (subchela) at end of second thoracopod; formed by dactyl bearing down on propodus [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.