Triungulus :: Triungulus (n.) The active young larva of any oil beetle. It has feet armed with three claws, and is parasitic on bees. See Illust. of Oil beetle, under Oil..
Ungula :: Ungula (n.) A section or part of a cylinder, cone, or other solid of revolution, cut off by a plane oblique to the base; -- so called from its resemblance to the hoof of a horse..