The Halbert appear to be based on wasps or a close relative of them. There were two distinguished castes of Halbert when encountered by Bruce McGivern. The Queen is the primary individual, who routinely gives birth to her small offspring from her huge abdomen - simply known as "Halbert" - at an expected maximum of tens of thousands in a lifetime.
↑無題ドキュメント(Japanese). Capcom. Retrieved on 2012-08-20.