Amblyopone silvestrii is a primitive species of ant found in Japan.

[1] The species is known for larval hemolymph feeding (LHL), in which the queens stroke older larva with their antennae before piercing them with their mandibles.

They then lower their mouth parts to the wound and lick up the hemolymph.

[2] The queens are not the only vampires in the colony, as all adults will feed on the hemolymph of larvae, but the only source of nutrients the queen receives is the hemolymph of her brood.

A. silvestrii, being a primitive species however, do not kill the injured larvae, unless the colony is starved.