Catolaccus grandis is a parasitic wasp native to southeastern Mexico.

It was introduced to the United States in the 1970s.

[1] Its natural hosts are the boll weevil (Anthonomus grandis) and the closely related Anthonomus hunteri.

[1] Its predation of the boll weevil, an economically significant pest of cotton, has led to its use as a biological control in the United States.

This chalcid wasp-related article is a stub.