Chalcididae. -- These are medium sized wasps about 2.2-8 mm long. Their hind femora are swollen and bear teeth. The chalcidids have antennae that are bent and very small. The body is laterally compressed. They are distinguished from the leucospidids by having their ovipositor short and their wings not folded longitudinally when resting. The eggs are produced parthenogenetically at the rate of 300-400.